Ya Don, it is impressive... not to mention the training, supervision and quality control by the Mumby brothers!... but a fantastic product for the price.
We are a couple going to floating early grey nomad in a few years. I've struggled with the builds between aluminium and fibreglass. We do want to explore the frozen north at some point, so I do want to look into more sturdy builds. Your video gave me the confidence to give it some serious thought. Cheers!
I enjoyed this episode very much, it is the first of yours that I have seen. It wasn't what I was expecting. I plan to watch all of your other videos this weekend. Thanks very much!
Crikey, a blast from the past! Mike Allen of Boatshop Phillipines built that yard and my two tris (Marples and Newick) You are right about that traffic, I spent many many hours enjoying the exhaust fumes and dust of Liloan, Compostella and Carmen! Do you know if Tim offers the options of centreboards or mini keels on the 48 and is he still in Cebu?
what is superb is that the constructor has succeeded in making "the round" in many places, which makes the red superb and magnificent to look at ... !! excellent work, for a solid sailboat, a great success ... !! Well done !
Fascinating to see your great photos and video of the “creation” of Jupiter. I’ve watched various vlogs of fiberglass construction and repairs and to see the same objective being achieved with tig craftsmanship is great. Thank you for sharing and educating me.
Jamie, please could you add some information about the forepeaks on both hulls. Don't see access hatches from the deck? Also where do I get information on the 50' model
That's correct Raj, no deck access... They are water tight floatation compartments... However you can unbolt an access panel from the head/shower cabin... If you email me on Svjupiter2@gmail.com I can put you in touch with the designer.
My Welder friend says when he first started with aluminium he'd be super careful but sometimes a hole would suddenly appear "miles" away from the weld area but he got round it by clamping a piece of "clog iron" behind where he was working to act as a heat sink.
Thanks the visuals were good info. Looking to build my own river to bay size catamaran. I have been welding for about a decade and have done piping on board ship but never done structure.
many thanks for sharing your source,,,,I always knew fiberglass is cheap material since it only protects the wood inside, I use to make dingy when I was 10 .
Cheers for another great video mate. This is more in my price range and preferred materials. Why buy secondhand fiberglass when you can go new and aluminum.
Absolutely Bob... I didn't need a show boat or a floating caravan.... I wanted and affordable, strong world cruiser and i this design ticked all the boxes. Cheers
Going to completely nerd out on this video series !! I know a shipyard that builds aluminum power cat workboats with CNC production facilities. Is it possible to buy plans for a Mumby?
@@SailingLifeonJupiter It's relative. You gotta have in mind that mumby is spartanic-extreme-performance while DeVilliers is "just" adventure(!)-high-performance. They still have VERY good performance values(SAD, Kelsing, Bruce...). So making 10-12 knots avg is no issue at all. All while serving WAAAY more livability and safety. Like its not even comparable. Like the safety of having a beefy rudder and prop protection. Ohh and I didn't even mention yet the super safe front cockpit. I see it the way that performance is is much but not everything if(!) I live 100% on a boat. It needs to be at least so comfortable that I don't yearn for the comfort of home. So I'm personally not looking for a spartanic liveable(Mumby sugar scoops look extremely dangerously small thinking about hooking fish in high seas there, very restrictive outdoor livingspace with very little) extreme performance boat but a healthy mix of high performance and liveability. But yeah, 300k is quite the bargain for a new performance cat!
Hi Jamie, I wonder is there is any benefit also in that a full metal boat would be better at withstanding a lightning hit? My one month old Lagoon 620 got a direct hit to the mast and pretty much all the electronics on board were wiped out. Luckily there was insurance but the totally inept Lagoon agent was never able to get her back to where she was.
Wow, that’s a shame….yes Diederik, a metal boat should act as a "faradays cage" and protect the sensitive electronics within… and even be less likely to be hit since it should be neutrally charged being at the same potential as the water itself…. These are the theories anyway… and I don’t want to test it!
Great boat, great design, great price. Really 300 all fitted out?? Can' t wait to see the rest. I have read that since a catamaran flexes inevitably, eventually, the metal fatigues and breaks without warning. Any sign of stresses yet anywhere? What about electrolysis? Do you have to stay away from steel boats? Can you stay in marinas? How was the experience with the yard? Is Mumby there? Many, many questions...thanks for sharing.
Hey Tone..Yep that's what it cost me... And i've heard from guys enquiring recently that it's pretty much the same cost..perhaps 10% more... These boats are pretty stiff...so no signs yet of any fatigue. I'm not sure of the material properties, but i imagining because ally is soft it would have more elasticity than steel? Anyway, I'm just guessing on that one. Electrolysis is mostly controllable with your zincs... I've had fast zinc erosion in a particular marina (6 weeks) but perhaps we should have anticipated that and hung some anodes in the water also.... No structural electrolysis is evident... occasional pits in the wet bilges... so i try to them dry. I loved hangin out on my days off in the yard in Cebu... yes Tim is always there directing, training and supervising... Always available to pick his brain during lunch break. Give me an email on SVjupiter2@gmail.com if you want me to put you in touch with him... Cheers
@@SailingLifeonJupiter Hi Jamie, thank so much for the detailed response. I still can't believe the price. What do you include in the all fitted out? Electronics, sails, water-maker, anchor, chain, standing and running rigging,...For a custom made 48 footer that would be half the price of the competition. How old is the design now? Are there plans for an updated version or new model? Has the design changed/improved a lot since the beginning. Is there a Mumby group that I could follow to get an idea of the owners experiences. I am going to email you. Is Mumby building exclusively in the philippines now? Cheers
@@tonewreck1 .... Yes that was all up, roughly what i spent... But it is very easy to spend a shit ton on a boat... i'm pretty selective with gear and analyze whether i really need it or not... but enough toys to keep me busy... electronics, dive compressor and dive gear, watermaker (homemade-check our vids)... He has evolved the design over the last 12 or so years.... It slowly gets better and better with every build.... Yes Tim is reestablishing his yard in Cebu now.
@@SailingLifeonJupiter @tonewreck1 One of the downsides of Aluminum is that it has a fatigue life. If it bends enough it fails eventually. BUT this design looks pretty stiff, which, if so, prevents bending stresses and extends life. (This is the same reason airliners have a fatigue life: flexing of wings, etc., but mostly repeated stretching of the cabin due to pressure changes at altitude.) All metal boats, including Aluminum, have the potential (no pun intended) for galvanic corrosion. Heck, plastic composite boats do too. All that's needed is two metals of different galvanic potential in contact with seawater. (Basically it forms a battery with a liquid electrolyte.) Sacrificial Zinc anodes prevent that by in essence corroding first. Same as zinc on car body panels to stop steel from rusting. All the normal rules for preventing corrosion on a boat apply to Aluminum boats the same as any other. They are not unique in that regard.
Are these still being built there? Since you were there 6 years ago, things might have changed. Availability and price... I love the PI and the people there. I worked on Luzon 1982-1989. Diving off the Banca boats, sailing and windsurfing was great. I built a carbon F-9A tri (31') launched in 1993 but need a decent sized cat to cruise on now. This could be an option but I'm a bit concerned with aluminum.
Yes they are Steve... they did close down for a year or so... but should be back in full swing by mid this year... Ally gives me a great sense of security in big seas, reefs and even lightening storms! Email me on svjupiter2@gmail.com if you'd like me to hook you up with Tim Mumby
Youre correct when you stated that having a cat built in Australia would be expensive, as an aluminium fabricator who worked for Incat (up to 112 metre passenger catamarans) the average tradie earned Aud$1200(US$920) for a 38 hour week, net.
Wow Steven... not a bad wage... I don't think i'll end up back in Aus because of the living costs.... i'd prefer to live cheaply and work less. Thanks for watching!
@@SailingLifeonJupiter living costs are out of control and will continue to get worse. We've sold our property and plan to be on our own liveaboard by years end, our wage slaving days are over:) take care and all the best.
AweSome Jamie. I am intrigued by the Mumby - Will you be discussing the latest variant of the Cyber as I think that there is a 50 foot version now? What would you change if you could , what modifications are you planning? If you were doing more family type cruising with a crew of 4 around say the Whitsundays would you do anything different.
Hey Mark... thanks for the feedback... I'm not aware of any authentic Mumby variants.... I'll check with him, but im pretty sure what you've seen is another builder modifying the plans to his own requirements.... and then using the "mumby" name to get a good sale price. Im not planning any mods at all... although that was not always the case... When i was having it built i contemplated extending the bimini for more shading....galley up pro/cons...etc. But am glad with the decisions i made then. The only small annoyance for me is the cockpit design... I go for beers on a friends little Fontaine Pajot or any other "chartermaran" and they have such a comfy luxurious cockpit... The Mumby cockpit is very functional with minimal comforts. You can makes some comfort with cushions etc... but ultimately the cockpit layout is most important. It's not an easy modification at all, because the cockpit layout affects the queen sized cabins in the aft quarters... and also the huge rear crossbeam extends the entire width, meaning you cannot have walkthrough transoms.... so it would be an entire design change. Honestly Mark for family whitsunday cruising, any of the "condomarans" would suffice...thats what they excel in...a comfortable/luxury apartment that you can cruise around in fair weather on the coast. Thanks for watching Mark!
Jamie, I've watched this video about 40 times and can't quite figure out why there's a double bow on the front part of the deck house or just in front of your bed on starboard and the washing machine on the port side. I'd love to see a video on how they bend the aluminum. Do you have anymore technical details that you could enhance this story for people like me that love details and possibly do another video on it? You could also talk about other details such as design and performance characteristics as well as the difference between a fixed mast base verses going with a rotating mast base for a lightweight performance cruising catamaran like yours. Sail design might also be a good subject but that would probably best fit in a video all by itself. I think five sails is best for your boat but I could be wrong. What do you think is the right amount of sails you should have and why?
The bending of metal is done on an English wheel. One wheel is concave and the other is convex, and rolling sheet metal under force between them stretches one side of the sheet, lengthening it. It takes a ton of skill to make complex curves this way.
@@LoanwordEggcorn Thanks. It looks like there are two pieces of aluminum in the front underneath the anchor chain that's in between both hulls. I'm wondering why.
Brilliant Video Jamie and nice approach. I have an ally sailing boat which I have replated below waterline due to tin worm - mig and tig. Great to see this vlog (and appreciate the work involved and the need to manage heat - doing something one off.) Keep the vids coming. Fair winds. David
@@SailingLifeonJupiter My pleasure. Not sure how old your video is but I was in Grenada a while ago (back of Hog Island). Used to love that place. One of the best ex pat hidey holes there is. :) . Rogers beach bar and Nimrods 'rustic' bar at Woburn was nice place to chill out after a hash run. Cricket was great too at Clarkes Court Marina...but they developed the land. Fond memories. Fair winds.
Good wave clearance, unlike most production cats, and doesn't have clear water passage from the wave scoops, into the boat like most. ( called sugar scoops designed to sink most of them in bad seas ). Most of the cats are not up to safe ocean passage standards.
Wow (I’m back) what a great idea to show some background footage. Looks like a crazy amount of work though to shape in aluminium. Personally I’d prefer to build in wood. On the other hand I’m (still) living in a country of timber. 🪚🪓🔨🪛🔧
Hey Miq... yep a heap of hot and steamy work welding in the jungles of Philippines.... but those boys are grateful for a well paying job and learning a trade. You'd probably enjoy the warmth of welding over there in Sweden wouldn't ya? (Sweden...is that right?)
Very nice indeed to se how it was built! I tried to find data on headroom without luck (I am 200 cm) and consider what cat to buy in a few years. Btw. is the foam closed cell - and does that make the cat unsinkable?
great vid, thanks! - doubt whether it would still be $300k in today's markets, not so much for local labour, but more for getting sails, mast, boom, engines etc (all u gotta get from abroad). You'd have it today for double that more likely.... Still good value if u compare to other new vessels
Hey Rod... there's a few guys getting in touch with the designer at the moment, because he is building again this year in Cebu... The reports coming back so far show about a 10-15% increase from what i paid. Thanks for watching!
Are they still in operation? When I first found your channel a year ago or so I went looking for them and couldn't find them, assumed Mumby was out of business.
@@SVPearler I mean new, not used. I did find an 18 year old used one on yachtworld. I’m interested in the name of the manufacturer. Or if you have a link to where these are on the market, that would be great.
Great video. Loved the part 2 also but can't find it again..Q1. Did you coat the hulls in epoxy or something to protect from electrolytic Corrosion?. Q2.And what is the deck and coach House roof coating . Does it get hot in the sun? Q3Are Bench's, seats cabinets etc all moulded GRP or some alloy? Q4. How long did it take for the build? Keep up the great vids!!
They hold their value second had…coz no one is building them new at the moment. And they are a lot of boat for the cost…At the moment material prices have inflated…but labour costs in Philippines hasn’t….if you’re keen to known about the options email me on svjupiter2@gmail.com
Hello, What is the maximum speed you touch with Jupiter 2? What do you think of a budget for 2000 per month for live on a catamaran (for 2 adults or with 2 children) thinks 😊
Hey MrOchingi... That budget is certainly doable, but you will need to avoid marinas, DIY everything and maybe catch/hunt to supplement your shopping bill... Oh, the best surfing speed on Jupiter was 23kts.
@@SailingLifeonJupiter I come from France do you think be catch by killer whale? Do you heard about this they break many boats around Gibraltar. That many reasons I prefer a cat like your's... Do you think is secure against this?
How many man-hours, would you say, did the construction of your Mumby48 aluminium take for the hull alone??? and how many many man-hours did the upper-deck take? (So if a team of 5 are working full-time for a month that's 5X21daysX8hours=840man-hours.) You did mention 20 months for the whole build, but how many labourers were working on it at any one time full-time? Thanks!
Geeeez Garen...that's not my area of expertise.... but roughly 4 guys working on the weldup was 6mths.... fitout roughly 14mths with 4 guys (5 days a week).
@@SailingLifeonJupiter Thanks! That pretty much answers it. So, 4menX6months=24man-months for the ally body. And 4menX14months=56man-months for fitout. You said they're earning good wage for the area. How much is an average monthly salary for those workers?
Awesome to see Jupiter II being born. A good idea to float the hulls to the fit out spot, find any leaks before it's too late. What engines did you install, I can't remember seeing them?
Hey Chile... I went with Beta 35's... although Tim Mumby usually uses Yanmars... The Beta's cost a bit more, but apparently you can buy cheap parts anywhere.... they are Kubota engines, which are Japanese agricultural engines used all around the world. Beta just do the marinizing.... I'm happy enough with them so far with about 800hrs each. Cheers
Hi! Nice Video :D I want to build my own catamaran, but since I’m based in Eastern Europe, Philippines it’s not an option for me, UE taxes, CE and so on. I have asked in few local shipyards, and they can build the hull without problems, and the price seems to be ok. I read the comments that it’s about half year work for 4 persons the hull, and one year the finish. But do you remember the ratio of the costs on your cat ? I mean, the finish costs 2x, 3x or 4x of building only the hull ?
Yeah Dawid... Finish price was about x 3 the weld up....and that's with all the toys(Lithiums, dive gear, dive compressor, sails, engines, rig, electronics)
Huge thanks mate! Super useful to see how she's built. The same boat built in a first world country would be at least 3x to 4x as much due to labor costs. That's a lot of welding. At the same time, like the relatively simple design which does help reduce the labor somewhat. Glad to see the local lads getting good work at the same time, and the work looks beyond adequate. P.S. Is there a link for the fit out video? Edit: found it: ua-cam.com/video/rVj_IhsEqrY/v-deo.html
I was super interested in this video as I was considering trying to have a boat built. How long did it take to complete the fitout after the hulls where faired and painted? APpreciate you sharing your experience.
Hey Brian.... Tim's yard normally completes the fitout in about 12mths.. depending on how many boats he is working on... and that would be having 3-4 guys working on it. The hull painting alone was another 2 months of fairing, painting and polishing.
Very interesting, well done. I'm given to understand that although aluminium is lighter, and therefore more performance oriented, it doesn't handle rough seas as well as fibreglass, also because it's lighter, a "good and bad" type of situation. Can you comment on this yet.? Good commentary letting us know all the basic elements. Looking forward to future productions. Regards from Brisbane Australia.
Sure Wyatt family... everything is a compromise... a lighter cat is more "active" than a heavy one in rougher weather.... but in lighter weather you'll be motoring a heavy cat. We were happy to be still sailing in a 5kt breeze on our Sth Atlantic passage for a lot of the way. Thanks for watching from Jupiters hometown!.
@@SailingLifeonJupiter , that makes sense. As RAH used to say, “There ain’t no such thing as a free lunch!” Everything is a compromise. A Lotus ain’t for someone who owns an Aston Martin. Both great at what they do, but very different vehicles.
@@Bill_N_ATX Many manufacturers of expedition boats, power or sail, prefer to build out of aluminium or steel for the ability to work in extreme conditions. Same as commercial fishing boats, working boats and ferries. Hardly anyone uses fiberglass for commercial heavy going .Aluminium is lighter and stiffer.
@@boganbob2708 Obviously. If you ever catch me out on the vast blue ocean it will be on a boat of metal. If I was a man of means, it would be a steel hulled trawler with a pair of diesels such that absent abysmally bad luck, I could deal with most anything. Yes, I am aware that folks sail around the world on 30 something foot Fiberglass sailboats every year, but not me. I lived through my adventurous days in the 80’s and 90’s, so as an old man adventure is not for me.
As you no doubt know Jay, he doesn't make himself obvious online... So, i managed to get a phone number for him from another owner... and it'll sprouted from there.
@@evankrhodes Did you end up purchasing a boat? What was the cost for the plans and CNC cut files? Are you planning on posting progress photos on Facebook?
@@robertlaird6746 no I haven't. No response from the builder here, but besides that, I'm waiting for prices to dip. I have a feeling people will be wanting to unload their boats in the next year or 2. In the meantime, I bought a motorcycle and will be riding through the Philippines 🇵🇭
@@evankrhodes I also believe that prices will drop sooner than two years. Now would be a good time to purchase some physical silver rather than holding onto fiat currency. A country measures it's wealth by precious metals so why not us as well. I'm going to get a Mumby 48 or 50 as soon as this situation with the globalist plays out.
From what i read the odds are less... Being metal the boat will be at a similar potential to the surroundings.... Plastic however will build static and be attractive to lightening.....And of course if we do get struck, we are in a "faradays cage" so us and hopefully most of the electronics will be protected.... That's how i'm sleeping at the moment in a storm!
I have been looking for a performance aluminum cat that can sail around the world and go up northern latitudes and sail around Norway etc...it would be helpful to have a link or name for this builder especially if they are still building and you can get some customization. VAAN R4 is being announced as a aluminum world cruiser but looking at it from the back may not be the safest for long passages.
Hey UR.. Ahh cool...i hadn't heard of the R4... looks interesting, but on first glance appears to have the hull shapes of a charter boat due to the heavy furniture that goes with it... and I'd expect it to be pretty pricey... is it? Send me an email on SVsupiter2@gmail.com and i'll hook you up with Tim Mumby the designer/builder. Cheers
@@SailingLifeonJupiter according to what I have been able to find out is it is in the 400K USD range. From my understanding it is more of a performance type of cat and the hulls are not as big as the charters but again, I haven't seen one in real life yet as they will be launching this year.
Ahhh.... James, he doesn't have one...crazy huh... fact is he has plenty of people wanting these boats, so he doesn't advertise. If you want to get in touch with him, give me an email on svjupiter2@gmail.com or gimme yours and i'll hook you up.
I was under the impression that aluminum was disfavored for catamarans because the structure amplifies twisting forces and metal fatigue can be such a huge issue in aluminum. Have any of these been out sailing for 25+ years to see how they hold up in the long term? I know fast ferries are all aluminum cats but they are considerably less beamy than a sailing cat and tend to have considerably more transverse bulkheads than you could possibly fit in a sailing cat and still have it be useful.
Not sure about that Emerson... But ally is starting to become the new fashion for rugged cats... Even Jimmy Cornell has been converted. A bit different, but aluminium aeroplanes structures have extremely repetitive wing flexing. Thanks for watching tho.
@@braithmiller That's always true, but some materials require knowable design compromises. You could design and build a ferrocement cat, but the coverage thickness required would necessarily yield a cat that was extremely heavy.
@@opcn18 flippant example There is a pile of reasons why aluminum is the majority of new fishing and transportation build work. I work with all metals and composites, each intended use has a trade off. My ketch is wood. All on ballance if I want an oceangoing catamaran I would build it out of aluminum.
@@braithmiller I chose an extreme example to illustrate my point. Aluminum is a popular choice for a lot of boats, but sailing catamarans are on the extreme end of cyclical loading, which is a characteristic that aluminum has issues with, that's why the vast majority of sailing catamarans are composite, a material that handles cyclical loading very well.
I love your "let's sit down and have a chat" style of presentation! That is one VERY Beautiful yacht!
Good to know...tks for that Brad
Another great episode, thank you. That Mumby is a handmade piece of art. Its incredible to see those young men creating a hull by hand. Outstanding!
Ya Don, it is impressive... not to mention the training, supervision and quality control by the Mumby brothers!... but a fantastic product for the price.
Good to see my kababayan living in a catamaran.
Thank you po
I think you have convinced me to look for aluminum constructed boats
Yes Keith.. Its a peace of mind in a heavy sea, reef or even a lightning storm. I'm happy with ally.
I very much like the boat. Seems both very functional and spacious. Well done and all for 300k. Remarkable.
Many thanks Malcolm
I enjoyed the video.
Awesome, thank you Ynech
This is the answer yo soooo MANY prayers!!! Thank you sooo mich. I will get my wife on this asap…..she is Indonesian. Again…TYVM
Ya Michael…we love it
That was a very interesting video, Thanks for sharing it with us, an amazing setup in the middle of nowhere. Cant wait for the next one.
Yeah.. a mind blow huh Ricki!... amazing.
Great video! I had no idea this was an option. Many thanks!
We are a couple going to floating early grey nomad in a few years. I've struggled with the builds between aluminium and fibreglass. We do want to explore the frozen north at some point, so I do want to look into more sturdy builds. Your video gave me the confidence to give it some serious thought. Cheers!
Hi guys, yes we certainly have confidence in our boat…makes for more relaxed cruising, both around the rocks and on the ocean.
I enjoyed this episode very much, it is the first of yours that I have seen. It wasn't what I was expecting. I plan to watch all of your other videos this weekend. Thanks very much!
Glad you liked it TT... but this one is very different to our usual... BTW Part 2 coming out today....
🤩🤩 very good project, aluminium is the best material for catamaran
We agree! Thanks Cedric
@@SailingLifeonJupiter 😉 how much it cost to build a 60ft monohull? Thx 🙏🏾
Crikey, a blast from the past! Mike Allen of Boatshop Phillipines built that yard and my two tris (Marples and Newick) You are right about that traffic, I spent many many hours enjoying the exhaust fumes and dust of Liloan, Compostella and Carmen!
Do you know if Tim offers the options of centreboards or mini keels on the 48 and is he still in Cebu?
Yup he is... Although boat he builds he swears will be his last. Not sure if he would build mini keels. It's against his religion.
what is superb is that the constructor has succeeded in making "the round" in many places, which makes the red superb and magnificent to look at ... !! excellent work, for a solid sailboat, a great success ... !! Well done !
Cheers Vincent, tks
Can’t wait to see more. I would give two thumbs up if I could!
Oh cheers Kevin... will take it as 2!
Very very interesting. What an amazing job they did for you.
Yeah Bruce... Very impressive work
Excellent video of the construction process in a remote area. Looking forward to the next video.
Thanks UUBrahman... coming soon
Wow, I thought only the hulls were aluminum. Looks like a solid boat.
Certainly is Alex... a great bluewater performance cruiser.
Interesting , yeah Aluminum Is my Fav of having a Boat built
Yeah, i'm really happy with the ally
Love that history of Jupiter 2.
Hehe...thanks Ma
Absolutely love it! Looking forward to the next episode.
Hey thanks so much DSD!
Fascinating to see your great photos and video of the “creation” of Jupiter. I’ve watched various vlogs of fiberglass construction and repairs and to see the same objective being achieved with tig craftsmanship is great. Thank you for sharing and educating me.
Glad you enjoyed... Cheers Todd
WOW, great!
Thanks Home ideas!
Jamie, please could you add some information about the forepeaks on both hulls. Don't see access hatches from the deck? Also where do I get information on the 50' model
That's correct Raj, no deck access... They are water tight floatation compartments... However you can unbolt an access panel from the head/shower cabin... If you email me on Svjupiter2@gmail.com I can put you in touch with the designer.
Amazing vídeo. Thanks! I´m only a dreammer, for now, but who knows the future!?
Hey Mauro... that's how it all starts... it's just a decision that makes it a reality.
Most informative. Like the presentation style I may do similar at some point with my years of relaunching work.
Cheers
My Welder friend says when he first started with aluminium he'd be super careful but sometimes a hole would suddenly appear "miles" away from the weld area but he got round it by clamping a piece of "clog iron" behind where he was working to act as a heat sink.
Yep... There was plenty of heatsinks welded all over.... Looked like a porcupine!
Thanks the visuals were good info. Looking to build my own river to bay size catamaran. I have been welding for about a decade and have done piping on board ship but never done structure.
I'm sure you'll be good at it MG
I love to watch u, just for u acting and story telling skills, ur actually really good, just don't forget ur an Aussie. 🇦🇺🤣👍🤘oh and I'm boat Crazy!!!!
Oh come on Aussie, u can do better than a ♥️ how about a actual comment reply.👍🇦🇺
That really is fantastic 👍👍👍👍👍👍
Very cool boat yard huh.... thanks Michael
@@SailingLifeonJupiter Yep it is really good work with no showboating like some of the western boat manufacturers. 👍👍👍
wow , didn't know my old country have craftmen that could produce this beauty .
Very clever your old countrymen!
I enjoyed the contains and simple facts. Thank's
Tks Dianne
many thanks for sharing your source,,,,I always knew fiberglass is cheap material since it only protects the wood inside, I use to make dingy when I was 10 .
Great point!
Btw, the scrap pieces tacked perpendicular to the joins to be welded are called stiffeners.
Makes perfect sense Steven..thanks
I liked this video😉
I'm glad... Tks Christelle.
Very nice design
Cheers JL
Cheers for another great video mate. This is more in my price range and preferred materials. Why buy secondhand fiberglass when you can go new and aluminum.
Absolutely Bob... I didn't need a show boat or a floating caravan.... I wanted and affordable, strong world cruiser and i this design ticked all the boxes.
Cheers
Going to completely nerd out on this video series !! I know a shipyard that builds aluminum power cat workboats with CNC production facilities. Is it possible to buy plans for a Mumby?
Sure is Arnold... email me on SVJupiter2@gmail.com and i'll hook you up with Tim.
Awesome Cat!!!
DeVilliers in New Zealand, makes real nice aluminum boats as well.
Fair Winds and Blue Skies!!
Ya, I just found out about them... They're nice but heavy and expensive. Cheers Chris
@@SailingLifeonJupiter It's relative. You gotta have in mind that mumby is spartanic-extreme-performance while DeVilliers is "just" adventure(!)-high-performance. They still have VERY good performance values(SAD, Kelsing, Bruce...). So making 10-12 knots avg is no issue at all. All while serving WAAAY more livability and safety. Like its not even comparable. Like the safety of having a beefy rudder and prop protection. Ohh and I didn't even mention yet the super safe front cockpit. I see it the way that performance is is much but not everything if(!) I live 100% on a boat. It needs to be at least so comfortable that I don't yearn for the comfort of home. So I'm personally not looking for a spartanic liveable(Mumby sugar scoops look extremely dangerously small thinking about hooking fish in high seas there, very restrictive outdoor livingspace with very little) extreme performance boat but a healthy mix of high performance and liveability. But yeah, 300k is quite the bargain for a new performance cat!
Hi Jamie, I wonder is there is any benefit also in that a full metal boat would be better at withstanding a lightning hit? My one month old Lagoon 620 got a direct hit to the mast and pretty much all the electronics on board were wiped out. Luckily there was insurance but the totally inept Lagoon agent was never able to get her back to where she was.
Wow, that’s a shame….yes Diederik, a metal boat should act as a "faradays cage" and protect the sensitive electronics within… and even be less likely to be hit since it should be neutrally charged being at the same potential as the water itself…. These are the theories anyway… and I don’t want to test it!
Looking forward to your next video. Wow.
Already out Manny... check it out...cheers
The boat looks awesome 👌
Cheers Bridgy
Great boat, great design, great price. Really 300 all fitted out?? Can' t wait to see the rest. I have read that since a catamaran flexes inevitably, eventually, the metal fatigues and breaks without warning. Any sign of stresses yet anywhere? What about electrolysis? Do you have to stay away from steel boats? Can you stay in marinas? How was the experience with the yard? Is Mumby there? Many, many questions...thanks for sharing.
Hey Tone..Yep that's what it cost me... And i've heard from guys enquiring recently that it's pretty much the same cost..perhaps 10% more...
These boats are pretty stiff...so no signs yet of any fatigue. I'm not sure of the material properties, but i imagining because ally is soft it would have more elasticity than steel? Anyway, I'm just guessing on that one.
Electrolysis is mostly controllable with your zincs... I've had fast zinc erosion in a particular marina (6 weeks) but perhaps we should have anticipated that and hung some anodes in the water also.... No structural electrolysis is evident... occasional pits in the wet bilges... so i try to them dry.
I loved hangin out on my days off in the yard in Cebu... yes Tim is always there directing, training and supervising... Always available to pick his brain during lunch break. Give me an email on SVjupiter2@gmail.com if you want me to put you in touch with him...
Cheers
@@SailingLifeonJupiter Hi Jamie, thank so much for the detailed response. I still can't believe the price. What do you include in the all fitted out? Electronics, sails, water-maker, anchor, chain, standing and running rigging,...For a custom made 48 footer that would be half the price of the competition. How old is the design now? Are there plans for an updated version or new model? Has the design changed/improved a lot since the beginning. Is there a Mumby group that I could follow to get an idea of the owners experiences. I am going to email you. Is Mumby building exclusively in the philippines now?
Cheers
@@tonewreck1 .... Yes that was all up, roughly what i spent... But it is very easy to spend a shit ton on a boat... i'm pretty selective with gear and analyze whether i really need it or not... but enough toys to keep me busy... electronics, dive compressor and dive gear, watermaker (homemade-check our vids)... He has evolved the design over the last 12 or so years.... It slowly gets better and better with every build.... Yes Tim is reestablishing his yard in Cebu now.
Oh...search on facebook for Mumby catamaran group... its' a small group and not very active.... but will give you an idea.
@@SailingLifeonJupiter @tonewreck1 One of the downsides of Aluminum is that it has a fatigue life. If it bends enough it fails eventually. BUT this design looks pretty stiff, which, if so, prevents bending stresses and extends life.
(This is the same reason airliners have a fatigue life: flexing of wings, etc., but mostly repeated stretching of the cabin due to pressure changes at altitude.)
All metal boats, including Aluminum, have the potential (no pun intended) for galvanic corrosion. Heck, plastic composite boats do too. All that's needed is two metals of different galvanic potential in contact with seawater. (Basically it forms a battery with a liquid electrolyte.) Sacrificial Zinc anodes prevent that by in essence corroding first. Same as zinc on car body panels to stop steel from rusting.
All the normal rules for preventing corrosion on a boat apply to Aluminum boats the same as any other. They are not unique in that regard.
Are these still being built there?
Since you were there 6 years ago, things might have changed. Availability and price...
I love the PI and the people there. I worked on Luzon 1982-1989. Diving off the Banca boats, sailing and windsurfing was great.
I built a carbon F-9A tri (31') launched in 1993 but need a decent sized cat to cruise on now. This could be an option but I'm a bit concerned with aluminum.
Yes they are Steve... they did close down for a year or so... but should be back in full swing by mid this year... Ally gives me a great sense of security in big seas, reefs and even lightening storms!
Email me on svjupiter2@gmail.com if you'd like me to hook you up with Tim Mumby
Youre correct when you stated that having a cat built in Australia would be expensive, as an aluminium fabricator who worked for Incat (up to 112 metre passenger catamarans) the average tradie earned Aud$1200(US$920) for a 38 hour week, net.
Wow Steven... not a bad wage... I don't think i'll end up back in Aus because of the living costs.... i'd prefer to live cheaply and work less.
Thanks for watching!
@@SailingLifeonJupiter living costs are out of control and will continue to get worse. We've sold our property and plan to be on our own liveaboard by years end, our wage slaving days are over:) take care and all the best.
AweSome Jamie. I am intrigued by the Mumby - Will you be discussing the latest variant of the Cyber as I think that there is a 50 foot version now? What would you change if you could , what modifications are you planning? If you were doing more family type cruising with a crew of 4 around say the Whitsundays would you do anything different.
Hey Mark... thanks for the feedback... I'm not aware of any authentic Mumby variants.... I'll check with him, but im pretty sure what you've seen is another builder modifying the plans to his own requirements.... and then using the "mumby" name to get a good sale price.
Im not planning any mods at all... although that was not always the case...
When i was having it built i contemplated extending the bimini for more shading....galley up pro/cons...etc. But am glad with the decisions i made then.
The only small annoyance for me is the cockpit design... I go for beers on a friends little Fontaine Pajot or any other "chartermaran" and they have such a comfy luxurious cockpit... The Mumby cockpit is very functional with minimal comforts.
You can makes some comfort with cushions etc... but ultimately the cockpit layout is most important. It's not an easy modification at all, because the cockpit layout affects the queen sized cabins in the aft quarters... and also the huge rear crossbeam extends the entire width, meaning you cannot have walkthrough transoms.... so it would be an entire design change.
Honestly Mark for family whitsunday cruising, any of the "condomarans" would suffice...thats what they excel in...a comfortable/luxury apartment that you can cruise around in fair weather on the coast.
Thanks for watching Mark!
Thank you
You're welcome
So are these guys building just certain model(s) of cat, or they can build using custom plans?
Usually just their own design... I think they're flat out with those orders.
@Hello how are you doing?
great video. thank you
Thanks for the thank you Keith
After dinosaurs, before girls, good quote
The inate order of things....
Jamie, I've watched this video about 40 times and can't quite figure out why there's a double bow on the front part of the deck house or just in front of your bed on starboard and the washing machine on the port side. I'd love to see a video on how they bend the aluminum. Do you have anymore technical details that you could enhance this story for people like me that love details and possibly do another video on it? You could also talk about other details such as design and performance characteristics as well as the difference between a fixed mast base verses going with a rotating mast base for a lightweight performance cruising catamaran like yours. Sail design might also be a good subject but that would probably best fit in a video all by itself. I think five sails is best for your boat but I could be wrong. What do you think is the right amount of sails you should have and why?
The bending of metal is done on an English wheel. One wheel is concave and the other is convex, and rolling sheet metal under force between them stretches one side of the sheet, lengthening it. It takes a ton of skill to make complex curves this way.
@@LoanwordEggcorn Thanks. It looks like there are two pieces of aluminum in the front underneath the anchor chain that's in between both hulls. I'm wondering why.
@@robertlaird6746 The ones close together? I'm not sure what those are for. Further apart could be for an anchor bridle.
@@LoanwordEggcorn It might be for extra strength and a place to run electrical wires easily.
@@robertlaird6746 Do you have a spot in the video where we can see them?
Awesome video! Such a great boat and we are looking forward to the next video already!
Ah thanks HH... appreciate the feedback
Brilliant Video Jamie and nice approach. I have an ally sailing boat which I have replated below waterline due to tin worm - mig and tig. Great to see this vlog (and appreciate the work involved and the need to manage heat - doing something one off.) Keep the vids coming. Fair winds. David
Hey David... thanks so much for the great comments.... Hope to have a beer with you on the water somewhere.
@@SailingLifeonJupiter My pleasure. Not sure how old your video is but I was in Grenada a while ago (back of Hog Island). Used to love that place. One of the best ex pat hidey holes there is. :) . Rogers beach bar and Nimrods 'rustic' bar at Woburn was nice place to chill out after a hash run. Cricket was great too at Clarkes Court Marina...but they developed the land. Fond memories. Fair winds.
haha...ya...we have a recent video at Rogers Bar.
ua-cam.com/video/Z8jcvv60ZSc/v-deo.html
Hi Jamie,
Is the Mumby Yard still making the cat or did they shut down?
Thanks for the nice video. 🇵🇭
Our pleasure!
Awesome video of an awesome boat with an awesome story - well done mate 👍👍👍
Hey Buster thanks so much... appreciated
This is the one. Al Cat with Dagger boards, I will take 2 please.
Glad you like Spartan
@Hello Captain Geoff, How are you doing?
Good wave clearance, unlike most production cats, and doesn't have clear water passage from the wave scoops, into the boat like most. ( called sugar scoops designed to sink most of them in bad seas ). Most of the cats are not up to safe ocean passage standards.
Yeah true Grancito.... Tks for watching
Great video mate, just popped up on my feed. Have subscribed to see her build😁
Glad you found us Foxy Lady... But we are mainly a travel/tips channel... Not much on the build... Since it was 6 years ago!
So this is the secret life of Rufus Sewell. Fascinating.
Loved lost in space 👍
DONT TEMPT ME! ...... Will (Robinson!)
I've been waiting for this video...great info!
Ya finally it came Ben.. tks for your patience.
The reason there is a big interest in aluminum Catamarans is because the Multihull of the Year (2021) was the aluminum Garcia Explocat 52.
Also coz they 'rock'!...cheers Jamie
@@SailingLifeonJupiter I can’t argue about that brother! Hooah!
Wow (I’m back) what a great idea to show some background footage. Looks like a crazy amount of work though to shape in aluminium. Personally I’d prefer to build in wood. On the other hand I’m (still) living in a country of timber. 🪚🪓🔨🪛🔧
Hey Miq... yep a heap of hot and steamy work welding in the jungles of Philippines.... but those boys are grateful for a well paying job and learning a trade. You'd probably enjoy the warmth of welding over there in Sweden wouldn't ya? (Sweden...is that right?)
Correct, Sweden 🇸🇪 🌲🌲🌲🌲🌲🌲
Very nice indeed to se how it was built! I tried to find data on headroom without luck (I am 200 cm) and consider what cat to buy in a few years. Btw. is the foam closed cell - and does that make the cat unsinkable?
Hi Mads...the bridgedeck cabin is 195cm at the door to 180 at the nav table...the hulls are mostly 195cm... You'd be polishing as you go!
@@SailingLifeonJupiter Thank you - already lost too much hair polishing. Stay safe.
great vid, thanks! - doubt whether it would still be $300k in today's markets, not so much for local labour, but more for getting sails, mast, boom, engines etc (all u gotta get from abroad). You'd have it today for double that more likely.... Still good value if u compare to other new vessels
Hey Rod... there's a few guys getting in touch with the designer at the moment, because he is building again this year in Cebu... The reports coming back so far show about a 10-15% increase from what i paid.
Thanks for watching!
@@SailingLifeonJupiter oh wow, that's not much at all! thanks for the info (we are going plastic this time ;-)
How is it possible to get in touch with that designer? Please share a contacts.
Are they still in operation? When I first found your channel a year ago or so I went looking for them and couldn't find them, assumed Mumby was out of business.
Quite a few have come on the market lately.
@@SVPearler I mean new, not used. I did find an 18 year old used one on yachtworld.
I’m interested in the name of the manufacturer. Or if you have a link to where these are on the market, that would be great.
yachthub.com/list/search.html?action=adv_search&se_region=international&new=New+and+Used+Boats&cate=Sail+Catamarans&makeid=&Make_Model=&hull_material=Aluminium&keywords=&price_from=1&price_to=1000000000&Lengthfrom=&Lengthto=&feetfrom=&feetto=&yearfrom=&yearto=&order_by=added_desc¤cy=&poa=yes
Great video. Loved the part 2 also but can't find it again..Q1. Did you coat the hulls in epoxy or something to protect from electrolytic Corrosion?. Q2.And what is the deck and coach House roof coating . Does it get hot in the sun? Q3Are Bench's, seats cabinets etc all moulded GRP or some alloy? Q4. How long did it take for the build? Keep up the great vids!!
Hey Roger, send me an email on svjupiter2@gmail.com, and i'll hook you up with Tim Mumby... he isn't on the "interweb!"
Does the chart plotter shout 'DANGER WILL ROBINSON, DANGER, DANGER!!" When you get in the shallows?
If only That were an option! That’d be awesome 😎
Has the price of these skyrocketed? I'm seeing them for $560k used. How much is a bare bones version new now?
They hold their value second had…coz no one is building them new at the moment. And they are a lot of boat for the cost…At the moment material prices have inflated…but labour costs in Philippines hasn’t….if you’re keen to known about the options email me on svjupiter2@gmail.com
I see one recently sold from estate under $400k us well cared.
Love the name and I’m interested in who built it.
How big can they build?
Can they build 100 footer?
Great video thanks.
Designed and built by Tim Mumby... He only does 45, 48 and 50ft.
Tks for watching
Hello, What is the maximum speed you touch with Jupiter 2?
What do you think of a budget for 2000 per month for live on a catamaran (for 2 adults or with 2 children) thinks 😊
Hey MrOchingi... That budget is certainly doable, but you will need to avoid marinas, DIY everything and maybe catch/hunt to supplement your shopping bill...
Oh, the best surfing speed on Jupiter was 23kts.
@@SailingLifeonJupiter I come from France do you think be catch by killer whale? Do you heard about this they break many boats around Gibraltar.
That many reasons I prefer a cat like your's... Do you think is secure against this?
How many man-hours, would you say, did the construction of your Mumby48 aluminium take for the hull alone??? and how many many man-hours did the upper-deck take? (So if a team of 5 are working full-time for a month that's 5X21daysX8hours=840man-hours.)
You did mention 20 months for the whole build, but how many labourers were working on it at any one time full-time?
Thanks!
Geeeez Garen...that's not my area of expertise.... but roughly 4 guys working on the weldup was 6mths.... fitout roughly 14mths with 4 guys (5 days a week).
@@SailingLifeonJupiter Thanks! That pretty much answers it. So, 4menX6months=24man-months for the ally body. And 4menX14months=56man-months for fitout.
You said they're earning good wage for the area. How much is an average monthly salary for those workers?
Hey Bro. Well done episode! I am looking into my not so distant future. :)
Very true Ron... I'm excited for ya... I reckon we will be back there within a year or two.
@@SailingLifeonJupiter See ya soon!
Awesome to see Jupiter II being born. A good idea to float the hulls to the fit out spot, find any leaks before it's too late. What engines did you install, I can't remember seeing them?
Hey Chile... I went with Beta 35's... although Tim Mumby usually uses Yanmars... The Beta's cost a bit more, but apparently you can buy cheap parts anywhere.... they are Kubota engines, which are Japanese agricultural engines used all around the world. Beta just do the marinizing.... I'm happy enough with them so far with about 800hrs each.
Cheers
Gidday, great videos mate, question? the manufacturer of your boat, why can i find details on the factory. Is he still building them.
Hey Peter,... yes he is still building...but has no "online" presence....i can put you in touch with him..send me an email on svjupiter2@gmail.com
Is it hard to find affordable insurance for a custom cat like a mumby?
Hi! Nice Video :D I want to build my own catamaran, but since I’m based in Eastern Europe, Philippines it’s not an option for me, UE taxes, CE and so on. I have asked in few local shipyards, and they can build the hull without problems, and the price seems to be ok. I read the comments that it’s about half year work for 4 persons the hull, and one year the finish. But do you remember the ratio of the costs on your cat ? I mean, the finish costs 2x, 3x or 4x of building only the hull ?
Yeah Dawid... Finish price was about x 3 the weld up....and that's with all the toys(Lithiums, dive gear, dive compressor, sails, engines, rig, electronics)
Huge thanks mate! Super useful to see how she's built. The same boat built in a first world country would be at least 3x to 4x as much due to labor costs. That's a lot of welding. At the same time, like the relatively simple design which does help reduce the labor somewhat.
Glad to see the local lads getting good work at the same time, and the work looks beyond adequate.
P.S. Is there a link for the fit out video? Edit: found it: ua-cam.com/video/rVj_IhsEqrY/v-deo.html
I was super interested in this video as I was considering trying to have a boat built. How long did it take to complete the fitout after the hulls where faired and painted? APpreciate you sharing your experience.
Hey Brian.... Tim's yard normally completes the fitout in about 12mths.. depending on how many boats he is working on... and that would be having 3-4 guys working on it. The hull painting alone was another 2 months of fairing, painting and polishing.
Very interesting, well done. I'm given to understand that although aluminium is lighter, and therefore more performance oriented, it doesn't handle rough seas as well as fibreglass, also because it's lighter, a "good and bad" type of situation. Can you comment on this yet.? Good commentary letting us know all the basic elements. Looking forward to future productions. Regards from Brisbane Australia.
Sure Wyatt family... everything is a compromise... a lighter cat is more "active" than a heavy one in rougher weather.... but in lighter weather you'll be motoring a heavy cat. We were happy to be still sailing in a 5kt breeze on our Sth Atlantic passage for a lot of the way.
Thanks for watching from Jupiters hometown!.
@@SailingLifeonJupiter , that makes sense. As RAH used to say, “There ain’t no such thing as a free lunch!” Everything is a compromise. A Lotus ain’t for someone who owns an Aston Martin. Both great at what they do, but very different vehicles.
@@Bill_N_ATX Many manufacturers of expedition boats, power or sail, prefer to build out of aluminium or steel for the ability to work in extreme conditions. Same as commercial fishing boats, working boats and ferries. Hardly anyone uses fiberglass for commercial heavy going .Aluminium is lighter and stiffer.
@@boganbob2708 Obviously. If you ever catch me out on the vast blue ocean it will be on a boat of metal. If I was a man of means, it would be a steel hulled trawler with a pair of diesels such that absent abysmally bad luck, I could deal with most anything. Yes, I am aware that folks sail around the world on 30 something foot Fiberglass sailboats every year, but not me. I lived through my adventurous days in the 80’s and 90’s, so as an old man adventure is not for me.
Do they only built cats at this yard or can they build custom single hull sailboats as well?
Nope.. Only this design.
what is your general opinion on building Alu boat in the Phillippines? Would it be worthwhile?
paint schools of squid on bottom of boat to attract mahi mahi
Great video, Jamie. How did you even find Tim in Cibu?
As you no doubt know Jay, he doesn't make himself obvious online... So, i managed to get a phone number for him from another owner... and it'll sprouted from there.
What would you do different with the build?
Man I want one of these. I'll be in Cebu next month
Tim Mumby will be there,... Go check him out! Email me on Svjupiter2@gmail.com if you wanna get in touch with him.
@@SailingLifeonJupiter thank you so much! I'll definitely contact him and arrange a meeting. YES!
@@evankrhodes Did you end up purchasing a boat? What was the cost for the plans and CNC cut files? Are you planning on posting progress photos on Facebook?
@@robertlaird6746 no I haven't. No response from the builder here, but besides that, I'm waiting for prices to dip. I have a feeling people will be wanting to unload their boats in the next year or 2.
In the meantime, I bought a motorcycle and will be riding through the Philippines 🇵🇭
@@evankrhodes I also believe that prices will drop sooner than two years. Now would be a good time to purchase some physical silver rather than holding onto fiat currency. A country measures it's wealth by precious metals so why not us as well. I'm going to get a Mumby 48 or 50 as soon as this situation with the globalist plays out.
Subscribed
Tks for subbing Hsiu
how much time it took to buil the aluminum frame? not complete the all cat, but just to make the aluminium structure ?
6mths Roger... pretty quick
@@SailingLifeonJupiter thanks... one more question. 6 months from the day they start with metal work, or 6 months from the order?
Been over Winnipeg yet?
Do you know how much they would charge for a bare alu floating shell?
Round about $150k usd these days, I'd be guessing.
Do you have open source plans posted any where for this Catamaran?
Nah... Only thru the designer
What about lighting . Are your odds higher of being hit, than fiberglass ??
From what i read the odds are less... Being metal the boat will be at a similar potential to the surroundings.... Plastic however will build static and be attractive to lightening.....And of course if we do get struck, we are in a "faradays cage" so us and hopefully most of the electronics will be protected.... That's how i'm sleeping at the moment in a storm!
@@SailingLifeonJupiter thanks for replying. I love the price for what you get.
I have been looking for a performance aluminum cat that can sail around the world and go up northern latitudes and sail around Norway etc...it would be helpful to have a link or name for this builder especially if they are still building and you can get some customization. VAAN R4 is being announced as a aluminum world cruiser but looking at it from the back may not be the safest for long passages.
Look for Garcia yachts.
They have a cat coming out.
Hey UR.. Ahh cool...i hadn't heard of the R4... looks interesting, but on first glance appears to have the hull shapes of a charter boat due to the heavy furniture that goes with it... and I'd expect it to be pretty pricey... is it?
Send me an email on SVsupiter2@gmail.com and i'll hook you up with Tim Mumby the designer/builder.
Cheers
@@SailingLifeonJupiter according to what I have been able to find out is it is in the 400K USD range. From my understanding it is more of a performance type of cat and the hulls are not as big as the charters but again, I haven't seen one in real life yet as they will be launching this year.
Hi Jamie do you have video of the fit out of your aluminum cat.
Will be coming out today Allan.
Superbe!
Tks Pascal
So if 300.000$ the lowest tag, what would same boat cost if build in West or Europe?
Its incredibly easy to overspend on a boat Leon... But that would depend on your labour costs... I'd be guessing a minimum of 700k
@@SailingLifeonJupiter Thanks for the info!
Subscribed !!! ... I loved the story... european rates are very high ... vessels like these are as good as any european make ....
Hey Maverick, thanks for the sub... Yes, we are proud of our boat. A sexy, strong and affordable world cruiser.
where is web site for ship builder plz
Ahhh.... James, he doesn't have one...crazy huh... fact is he has plenty of people wanting these boats, so he doesn't advertise.
If you want to get in touch with him, give me an email on svjupiter2@gmail.com or gimme yours and i'll hook you up.
You should see them with stainles still
Cheers
I was under the impression that aluminum was disfavored for catamarans because the structure amplifies twisting forces and metal fatigue can be such a huge issue in aluminum. Have any of these been out sailing for 25+ years to see how they hold up in the long term? I know fast ferries are all aluminum cats but they are considerably less beamy than a sailing cat and tend to have considerably more transverse bulkheads than you could possibly fit in a sailing cat and still have it be useful.
Not sure about that Emerson... But ally is starting to become the new fashion for rugged cats... Even Jimmy Cornell has been converted.
A bit different, but aluminium aeroplanes structures have extremely repetitive wing flexing.
Thanks for watching tho.
It's all in how you design and build it.
@@braithmiller That's always true, but some materials require knowable design compromises. You could design and build a ferrocement cat, but the coverage thickness required would necessarily yield a cat that was extremely heavy.
@@opcn18 flippant example
There is a pile of reasons why aluminum is the majority of new fishing and transportation build work. I work with all metals and composites, each intended use has a trade off. My ketch is wood. All on ballance if I want an oceangoing catamaran I would build it out of aluminum.
@@braithmiller I chose an extreme example to illustrate my point. Aluminum is a popular choice for a lot of boats, but sailing catamarans are on the extreme end of cyclical loading, which is a characteristic that aluminum has issues with, that's why the vast majority of sailing catamarans are composite, a material that handles cyclical loading very well.
Do you know know if they sell bare hulls ?
I'm pretty sure they do.