…you are welcome! …and it is a complex topic. I feel sometimes a bit sorry for those who have learned sailing and mastered steering a yacht once, and find themselves on a double rudder charter yacht…or those starting directly with it, thinking maneuverability without speed is impossible…
You don't see manufacturers go into this kind of detail. I don't think most want you to think about the issues with the popularity of twin rudders, spades vs. skeg, etc. The clever solutions you put into the interior are amazing - of course you have put that much thought into rudders, and multiple configurations. I can't wait to see the 48DS...... :-)
agreed. too many introductions go for "here is the berth, here is the galley, look at the colors yada yada". as if you'd be buying an apartment and not a boat. boat needs to be steered and sailed. that's what it's for.
These boats are so well built, and beautiful, and add to that, Schmidt’s passion, you have a winning combination. What a great company building superb sailboats.
Sirius, as always you are leading the way with UA-cam content on your products, design and manufacturing, it's fantastic and a wonder why other boat builders are not following your lead, keep up the great work 👍
I really like Sirius Yachts boats, you are so much ahead of the competition. Still not affordable for me, but very desirable. Maybe Nordhavn also can take a glimpse at your philosophy. They also build very durable boats, Not for sailing. Well If there is something you can learn from eachother would bring eiither community forward, I think.
If one were purchasing a Sirius Yacht for Live aboard sailing in mostly northern climates....which Rudder / keel configuration would be most desirable? Which is most sturdy and robust?
It depends how far north and whether your cruising ground is tidal or if your harbours are restricted by draught. All our keel configurations are sturdy and robust. For our rudders, a single rudder has the extra protection of a skeg. Which would lead you to a twin or single keel. But the lifting keel has two rudders which may be more vulnerable to floating objects (no skeg and not hidden in the wake of the keel), but you have two of them. There is more information about our choice of keels here: www.sirius-yachts.com/choosing-the-best-keel/
We have an electric-powered 40DS in development for an owner at the moment, she will have a longer sleek single rudder with twin electric drives behind the twin keels. These will provide propulsion and regeneration and separately operated drives will make maneuverability stunning in jet another way ;-)
Die besten yachten der Welt!!! Ein Frage hätte ich allerdings warum gibt es bis heute keinen Diesel elektrischen antrieb wäre das nicht sinnvoller weil sparsamer
Hätte ein Skeg über das gesamte Ruderblatt gerade auf Langfahrt nicht Sicherheitsvorteile? Wenn ich recht informiert bin, ist das insb bei US Langfahrtbooten (zB Pacific Seacraft) noch immer üblich?
Sirius Yachten - Plön ist schön. 1988, als ich dort mein Praktikum machte: die Boote - schön? Naja, ist ne Geschmacksfrage. Damals waren viele plump. Aber robust waren sie. Aber auch nicht billig. 2021, auch nicht billig, überhaupt nicht 😏😂😂. Robust? Weiß ich nicht. Denn wo Schiff klein, aber Technik sehr groß ….. so was ist immer fraglich. Aber, SUPER SCHÖN. Ja ich weiß. Ich habe es ja selbst geschrieben. Geschmack ist so eine Sache. Aber für mich hat Sirius so viel an Schönheit gewonnen ….. Sollte der Lottogott mich gewinnen lassen 😏 👍🏼
Great video... Just one question about rigging, if a customer requests a carbon mast and boom is that possible and would that improve the stability of the boat?
Yes, it's possible, although the only in-mast furling option is by Selden is for yachts 50ft and over. A carbon mast would indeed improve the (already good) stability as well as the motion of the boat.
🤔 what happen to videos of the interior of the 3-rudder steering system and, of the SWING KEEL? Is any center compartments compromised by the SWING KEEL?
Супер парусники. Круто. С вшего позволения хочу заметить что нет спасательного плота который автоматичесский падает в воду и ждет шкипера если тот выпадет за борт?
На Вашу модель twin keel sirius 40 ds поставить хард том на весь кокпит и вместо сейлдрайва, сделать дейдвуд валовую линию , слегка доработать внутреннее пространство. Вышла бы лодка для дальних увлекательных путешествий. Большое спасибо.
Thank you for asking. All our rudders are balanced to different degrees. The single rudder has a skeg and is semi-balanced rudder, the twin rudders are balanced. We explain more here: www.sirius-yachts.com/best-rudder-design/ Because of the increased pressure/turbulance from the propeller under power nearer the hull we use a skeg on our single rudder yachts. As the propwash goes between the twin rudders these don't need skegs.
….no need to. The fwd rudder directly behind the prop is the least deep of the three by far. The swing keel sticks out of the hull by 20cm with the full length of the leading edge to give you longitunal guidance driving and to take the full load when drying out. On sand this keel will sink in 5-10cm. Only than the two outer rudders will touch the ground and stabilize the boat standing like on a tripod, preventing to end up heeled sidewards. The middle rudder will still be clear of the ground by more than 10cm in this sitiuation, as it is also only needed in the mid to upper area behind the prop under the hull…
@@SiriusYachts I am assuming that more then 3/4 of the boat weight will be pressured on the swing keel (bolt?) since that the two rudders are at the stern. They will help keep the boat balanced while standing on a dry surface and not carrying too much of the weight as the swing keel is doing. While in sand this wouldn't be a problem. Meanwhile, I can see how safe it is to keep a twin keel boat on hard surface (concrete/asphalt) can the same be done with a swing keel boat?
Ok, that's interesting:) Why don't you use thrust vectoring? (or how would you call it; rotating the prop around the vertical axis) - it looks like there is a vertical axle anyway, and it should be a similar force to a single rudder bearing, so not that hard structurally. Longer lever arm?
Reliability. When we cross oceans we want stuff that doesn’t break. The number one reason people are forced to abandon their boat in the middle of the Atlantic is they lose steering. Many people install wind vane based steering, a very old way of auto steering, just so they have a backup rudder.
I think the reason why azimuth pod sail drives isnt a thing, is the cost. A fairly basic saildrive is pretty expensive. Now what we probably will see more of (I know Elan is doing this) is electric drives where you get two saildrives for two rudders. Solves the need for the third rudder, and ~doubles regen while sailing. (Making it a little more viable) With a config like this you can use differential thrust to manouver easily. Downside is off course cost again, and a technology in its infancy. I'm a believer in electric engines for sailing boats. But different segments require different levels of reliability. Me the coastal leisure sailor could easily do with a fairly modest battery bank and an electric sail drive. But if I was going to cross oceans, I would at minimum require some sort of reliable way to generate energy for the batteries (generator, hydrogen?, methanol fuel cell) other than solar or wind (wind generator or regen through props). More stuff is also more parts that can fail. Sorry for the rant.
@@McDoucheVonDouche eventually electric will take over in sailing im sure. Battery tech isn’t quite there. Solid state batteries should be coming soon and of course a few years after that till they’re somewhat affordable. Now on a catamaran it makes more sense now due to the higher speeds for regen. You don’t really start making real decent power till 7 or 8 knots.
@@McDoucheVonDouche I think hydrogen is the way to go because of weight. The problem is it isn’t efficient to generate. I’ve looked into it, you would need to be plugged into a doc for a week to generate enough hydrogen to have enough fuel to cross an ocean. My calculations were for the equivalent of 1000 liters / 265 gallons of diesel. Basically, a shore electrical connection will give you enough electricity to generate 4 kilos / 8.8 lbs of hydrogen a day. On top of that problem it’s impossible to know if you have a leak anywhere. End rant.
if i could order i would choose a inflatable one. sealed doors and windows. even if the yacht upsidedown, reversed, it will return to the correct position (but i suggestion a mast not allows it happen, maybe). anyway it would be better then lost all yacht , just cut off must and maybe even can save the mast. (or mast can be broken after storm). inflatable like closed lifeboats. and inside of the yacht too 2 or 3 doors can be sealed.
@@SiriusYachts That's difficult to say as everything is a compromise, isn't it? Generally I'd consider a full skeg over a half skeg just so a line wouldn't get caught around the rudder, and avoid gaps where a line could get wedged in. Also on that note - I'd have a line cutter installed on the prop shaft. That might avoid lines tangling around the rudder at all. In the end, a setup that allows me to get rid of tangles with a boat hook is better than needing to get in the water. Of course I recognize a full skeg would probably make close quarters manoeuvrability not as good as advertised for your boats. Maybe develop a twin rudder / twin electric motor sailboat. That could spin you right round. Also, is Sirius going to offer an electric option some day?
@@ajnasreddin You're right, everything is a compromise. We prefer to make yachts that are easy to manoeuvre, that can be turned quickly and easily. The area forward of the stock 'grabs' more of the flow from the propeller under power making the rudder more effective, but a full skeg will lose this extra 'power'. We also prefer the lightness on the helm that a balanced rudder provides when sailing Some yachts with full skegs can be very hard work on the helm. These are benefits you'll experience every day you sail or motor the boat, not the 1 day, say, every 20-40 years of sailing you might pick up a lobster pot. We can, however, add deflectors on the bottom of the skeg as well as rope cutters to the propellers - we'll add what our owners want. The day we offer electric power passed some time ago...We currently (no pun intended) have a electrically powered 40DS in development for an owner at the moment, she will have twin rudders and twin drives that provide propultion and regeneration. Fun times ahead!
@@SiriusYachts Good points, but whether or not you encounter lobster pots really depends on where one is sailing. It seems that in Maine waters (northeast US) not hitting a lobster pot is the exception. It would be great if you could highlight your electric options in a video one day. Electric motors, batteries, and recharging options vary greatly, and it would be interesting to see what Sirius is offering.
…nein, das empfinde ich nicht so, aber wir sind ein kleiner Betrieb, in diesen Videos steckt neben Spaß auch viel Arbeit und nicht nur sind rund 70% unsere Kunden und 80% unserer Interessenten eher des Englischen als des Deutschen mächtig sondern werden diese in der Regel auch von unserer Deutschen Kundschaft verstanden. Aber es gibt ja auch eine ganze Reihe deutschsprachiger Videos unserer Yachten. Bei Fragen helfen wir gerne in beiden Sprachen weiter…
We want more vídeos from Sirius.
Thank you for the interesting explanation. It's the first time I can understand fully the role of the rudder.
…you are welcome! …and it is a complex topic. I feel sometimes a bit sorry for those who have learned sailing and mastered steering a yacht once, and find themselves on a double rudder charter yacht…or those starting directly with it, thinking maneuverability without speed is impossible…
Please do a walkthrough of the inside of the lifting keel model :)
The only reason I have not been to visit you and place an order is that am still patiently waiting for a lottery win.😀👍
I know the feeling!
More videos please 🥰
You don't see manufacturers go into this kind of detail. I don't think most want you to think about the issues with the popularity of twin rudders, spades vs. skeg, etc. The clever solutions you put into the interior are amazing - of course you have put that much thought into rudders, and multiple configurations. I can't wait to see the 48DS...... :-)
agreed. too many introductions go for "here is the berth, here is the galley, look at the colors yada yada". as if you'd be buying an apartment and not a boat. boat needs to be steered and sailed. that's what it's for.
It is pleasure to listen your explanations about your yachts, especially for technical details. Thank you.
Sİrius vidyolarını izlemek her zaman çok güzel! Anlatan kişi de güven veriyor.
Always very nice solutions. There is a lot of thinking on Sirius yachts inside and outside. Congratulations to Sirius.
Some days ago I thought why not putting 3 rudders to use prop wash and I said I'm an idiot. Looks like I'm not :D .Great explanation, thanks!!!
I am in the market for a 50 ft sail boat. Just found this company and like the way the owner explains the workings of his boats. great job.
Wow!!! Die neuste Sirius mit Elektromotor !!! Das ist doch mal Cool und absolut Zeitgemäß. Ein Grund mehr sich eine Sirius zu zulegen ;-)
If I had the money guess where I'd spend it!
Cutting edge Yachts!
👍🎶🎶😎
These boats are so amazing.
Very nice and informative video. Thank you.
Again seems be the well thougts boats, I darn want to win the big lotto and get a Sirius
These boats are so well built, and beautiful, and add to that, Schmidt’s passion, you have a winning combination. What a great company building superb sailboats.
Thank you for this video! very informative video! I'll be waiting for a new video!)
New vdeo???!!! how long have i been waiting for this 😃
Very intriguing as usual. Only if more videos posted.
Three rudders is a game changer. These are truly innovative boats. Well done Sirius.
Love these engineering videos. More please!
I support
Nicely presented.
Schönes Video und wieder etwas gelernt. Danke.
Ihr seid einfach die Besten. Bin Fan seid >15 Jahren und immer noch zu arm...
Aber WENN, dann sofort...
Schönen Gruß aus Berlin
SIRIUS : lots of good ideas greetings from Atacama
Sirius, as always you are leading the way with UA-cam content on your products, design and manufacturing, it's fantastic and a wonder why other boat builders are not following your lead, keep up the great work 👍
You think this is cutting edge engineering? Cute.
impressive ability to sit on the rudder out of the water..
Oh my god ........ it’s my dream boat .....
More videos please :)
I really like Sirius Yachts boats, you are so much ahead of the competition. Still not affordable for me, but very desirable. Maybe Nordhavn also can take a glimpse at your philosophy. They also build very durable boats, Not for sailing. Well If there is something you can learn from eachother would bring eiither community forward, I think.
If one were purchasing a Sirius Yacht for Live aboard sailing in mostly northern climates....which Rudder / keel configuration would be most desirable? Which is most sturdy and robust?
It depends how far north and whether your cruising ground is tidal or if your harbours are restricted by draught. All our keel configurations are sturdy and robust. For our rudders, a single rudder has the extra protection of a skeg. Which would lead you to a twin or single keel. But the lifting keel has two rudders which may be more vulnerable to floating objects (no skeg and not hidden in the wake of the keel), but you have two of them.
There is more information about our choice of keels here: www.sirius-yachts.com/choosing-the-best-keel/
Danke. Great video
I love these designs. Have, or are you considering, making versions with electric propulsion?
We have an electric-powered 40DS in development for an owner at the moment, she will have a longer sleek single rudder with twin electric drives behind the twin keels. These will provide propulsion and regeneration and separately operated drives will make maneuverability stunning in jet another way ;-)
Gut gemacht!
- Das Video
- Die Boote
Please show us interior of lifting keel 40DS - Thank you
Die besten yachten der Welt!!! Ein Frage hätte ich allerdings warum gibt es bis heute keinen Diesel elektrischen antrieb wäre das nicht sinnvoller weil sparsamer
Will you be demonstrating the Sirius DS 40 at the Miami boat show in Feb, 14-18th 2024?
Hätte ein Skeg über das gesamte Ruderblatt gerade auf Langfahrt nicht Sicherheitsvorteile? Wenn ich recht informiert bin, ist das insb bei US Langfahrtbooten (zB Pacific Seacraft) noch immer üblich?
Sirius Yachten - Plön ist schön.
1988, als ich dort mein Praktikum machte: die Boote - schön? Naja, ist ne Geschmacksfrage. Damals waren viele plump. Aber robust waren sie. Aber auch nicht billig. 2021, auch nicht billig, überhaupt nicht 😏😂😂. Robust? Weiß ich nicht. Denn wo Schiff klein, aber Technik sehr groß ….. so was ist immer fraglich. Aber, SUPER SCHÖN. Ja ich weiß. Ich habe es ja selbst geschrieben. Geschmack ist so eine Sache. Aber für mich hat Sirius so viel an Schönheit gewonnen ….. Sollte der Lottogott mich gewinnen lassen 😏
👍🏼
Great video... Just one question about rigging, if a customer requests a carbon mast and boom is that possible and would that improve the stability of the boat?
Yes, it's possible, although the only in-mast furling option is by Selden is for yachts 50ft and over.
A carbon mast would indeed improve the (already good) stability as well as the motion of the boat.
@@SiriusYachts thanks for your reply.. I'd prefer stack pack to in mast furling so that's good news.
🤔 what happen to videos of the interior of the 3-rudder steering system and, of the SWING KEEL? Is any center compartments compromised by the SWING KEEL?
Супер парусники. Круто. С вшего позволения хочу заметить что нет спасательного плота который автоматичесский падает в воду и ждет шкипера если тот выпадет за борт?
На Вашу модель twin keel sirius 40 ds поставить хард том на весь кокпит и вместо сейлдрайва, сделать дейдвуд валовую линию , слегка доработать внутреннее пространство. Вышла бы лодка для дальних увлекательных путешествий. Большое спасибо.
Is your adjustable wheel patented? I see a s African cat with the same system.
Why not balanced rudder?
Thank you for asking. All our rudders are balanced to different degrees. The single rudder has a skeg and is semi-balanced rudder, the twin rudders are balanced. We explain more here: www.sirius-yachts.com/best-rudder-design/ Because of the increased pressure/turbulance from the propeller under power nearer the hull we use a skeg on our single rudder yachts. As the propwash goes between the twin rudders these don't need skegs.
Hey, it is you again. I remember your German accent. How's your business in the pandemic?
would you be willing to export models to the United States? I work for the largest Hatteras, Tiara, Saber, Back Cove, dealer in the United States.
It's amazing what I will watch in order to avoid doing actual work
What happens when the three rudder swing keelboat takes to the ground? That fwd rudder must fold right up?
….no need to. The fwd rudder directly behind the prop is the least deep of the three by far. The swing keel sticks out of the hull by 20cm with the full length of the leading edge to give you longitunal guidance driving and to take the full load when drying out. On sand this keel will sink in 5-10cm. Only than the two outer rudders will touch the ground and stabilize the boat standing like on a tripod, preventing to end up heeled sidewards. The middle rudder will still be clear of the ground by more than 10cm in this sitiuation, as it is also only needed in the mid to upper area behind the prop under the hull…
@@SiriusYachts I am assuming that more then 3/4 of the boat weight will be pressured on the swing keel (bolt?) since that the two rudders are at the stern. They will help keep the boat balanced while standing on a dry surface and not carrying too much of the weight as the swing keel is doing. While in sand this wouldn't be a problem. Meanwhile, I can see how safe it is to keep a twin keel boat on hard surface (concrete/asphalt) can the same be done with a swing keel boat?
I wonder. What if a killer whale in the Biskay bay comes to destroy your rudder, what will it do in case of 3 rudders? Destroy 1-2 or all of them 3?
❤🧿
Ok, that's interesting:)
Why don't you use thrust vectoring? (or how would you call it; rotating the prop around the vertical axis) - it looks like there is a vertical axle anyway, and it should be a similar force to a single rudder bearing, so not that hard structurally.
Longer lever arm?
Reliability. When we cross oceans we want stuff that doesn’t break. The number one reason people are forced to abandon their boat in the middle of the Atlantic is they lose steering. Many people install wind vane based steering, a very old way of auto steering, just so they have a backup rudder.
@@esquire9445 so the "thrust vectoring" is less reliable? Ok, that makes sense.
I think the reason why azimuth pod sail drives isnt a thing, is the cost. A fairly basic saildrive is pretty expensive. Now what we probably will see more of (I know Elan is doing this) is electric drives where you get two saildrives for two rudders. Solves the need for the third rudder, and ~doubles regen while sailing. (Making it a little more viable) With a config like this you can use differential thrust to manouver easily. Downside is off course cost again, and a technology in its infancy. I'm a believer in electric engines for sailing boats. But different segments require different levels of reliability. Me the coastal leisure sailor could easily do with a fairly modest battery bank and an electric sail drive. But if I was going to cross oceans, I would at minimum require some sort of reliable way to generate energy for the batteries (generator, hydrogen?, methanol fuel cell) other than solar or wind (wind generator or regen through props). More stuff is also more parts that can fail. Sorry for the rant.
@@McDoucheVonDouche eventually electric will take over in sailing im sure. Battery tech isn’t quite there. Solid state batteries should be coming soon and of course a few years after that till they’re somewhat affordable. Now on a catamaran it makes more sense now due to the higher speeds for regen. You don’t really start making real decent power till 7 or 8 knots.
@@McDoucheVonDouche I think hydrogen is the way to go because of weight. The problem is it isn’t efficient to generate. I’ve looked into it, you would need to be plugged into a doc for a week to generate enough hydrogen to have enough fuel to cross an ocean. My calculations were for the equivalent of 1000 liters / 265 gallons of diesel. Basically, a shore electrical connection will give you enough electricity to generate 4 kilos / 8.8 lbs of hydrogen a day. On top of that problem it’s impossible to know if you have a leak anywhere. End rant.
if i could order i would choose a inflatable one. sealed doors and windows. even if the yacht upsidedown, reversed, it will return to the correct position (but i suggestion a mast not allows it happen, maybe). anyway it would be better then lost all yacht , just cut off must and maybe even can save the mast. (or mast can be broken after storm). inflatable like closed lifeboats. and inside of the yacht too 2 or 3 doors can be sealed.
I see lots of opportunities for lobster pot lines to get caught.
What would you suggest instead?
@@SiriusYachts my alternative suggestion. Crab pot lines…Haha. Love these boats. 35DS is my favorite.
@@SiriusYachts That's difficult to say as everything is a compromise, isn't it? Generally I'd consider a full skeg over a half skeg just so a line wouldn't get caught around the rudder, and avoid gaps where a line could get wedged in. Also on that note - I'd have a line cutter installed on the prop shaft. That might avoid lines tangling around the rudder at all. In the end, a setup that allows me to get rid of tangles with a boat hook is better than needing to get in the water. Of course I recognize a full skeg would probably make close quarters manoeuvrability not as good as advertised for your boats. Maybe develop a twin rudder / twin electric motor sailboat. That could spin you right round. Also, is Sirius going to offer an electric option some day?
@@ajnasreddin You're right, everything is a compromise. We prefer to make yachts that are easy to manoeuvre, that can be turned quickly and easily. The area forward of the stock 'grabs' more of the flow from the propeller under power making the rudder more effective, but a full skeg will lose this extra 'power'. We also prefer the lightness on the helm that a balanced rudder provides when sailing Some yachts with full skegs can be very hard work on the helm.
These are benefits you'll experience every day you sail or motor the boat, not the 1 day, say, every 20-40 years of sailing you might pick up a lobster pot. We can, however, add deflectors on the bottom of the skeg as well as rope cutters to the propellers - we'll add what our owners want.
The day we offer electric power passed some time ago...We currently (no pun intended) have a electrically powered 40DS in development for an owner at the moment, she will have twin rudders and twin drives that provide propultion and regeneration. Fun times ahead!
@@SiriusYachts Good points, but whether or not you encounter lobster pots really depends on where one is sailing. It seems that in Maine waters (northeast US) not hitting a lobster pot is the exception.
It would be great if you could highlight your electric options in a video one day. Electric motors, batteries, and recharging options vary greatly, and it would be interesting to see what Sirius is offering.
Hmmm..complicated.
What about 7 rudders?
What about you go troll somewhere else?
@@giovannialtamore Don't be a baby just because someone questions your design.
ja sicher thorsten, deutsch ist ne scheiss sprache - oder nicht...?
…nein, das empfinde ich nicht so, aber wir sind ein kleiner Betrieb, in diesen Videos steckt neben Spaß auch viel Arbeit und nicht nur sind rund 70% unsere Kunden und 80% unserer Interessenten eher des Englischen als des Deutschen mächtig sondern werden diese in der Regel auch von unserer Deutschen Kundschaft verstanden. Aber es gibt ja auch eine ganze Reihe deutschsprachiger Videos unserer Yachten. Bei Fragen helfen wir gerne in beiden Sprachen weiter…
Einfach schönes und durchdachtes Boot!