I was struck by how small and compact the gyro unit was compared to what I was trained on. My experience is with US Navy systems dating back to the 60's and 70's. I was always somewhat amazed at how a unit (Sperry Mk 19) could provide such precise heading info (plus pitch/roll info for weapons systems) while being controlled from a separate cabinet full of banks of vacuum tubes. Total time from startup to accurate was about 24 hours. The ship I was on had a secondary unit (Sperry Mk 23) which was all solid-state, but it was actually not as accurate as the dinosaur bolted to the middle of my shop floor. Pitch and roll accuracy forced the gyros to be located centerline and on the 3rd deck...about 10 feet below our laden waterline. This means that every gyro indicator on board was actually a repeater fed from my shop...about 10 total. If curious, look up USS Kansas City (AOR-3) sometime. You haven't transferred fuel and cargo until you transfer it to another ship....at 17 knots. Needless to say, accuracy of ship's control and navigation equipment was a BIG thing.
When did you go to IC "A" school? I did mine in the Summer of 1973. Out of school, my first ship was AD-38, USS Puget Sound. We had a MK23 bolted to the floor, as well. Being a repair ship, the Puget Sound was seldom underway, so the gyro was more like room decor most of the time. Then I got sent off to a Adams-class DDG. That gyro was designed for a warship, the Mk 19. Spent two full years underway on that one. It used to be fun to look down through the glass top on the gyro and watch the stable element "move". If you know gyros, then you know that the stable element doesn't "move" at all - it is rock solid and the ship is moving all around it in azimuth, roll and pitch.
@@kevincrosby1760 Thanks! Things have indeed changed. When I moved to So Cal in 2001, I went back down and explored San Diego. The Naval Training Center was mostly gone, but the brick building where you and I went to "A" school was still there. I toured one of the new Arleigh Burke destroyers down there about ten years ago and couldn't recognize much of anything in Engineering.
I was a SPS-30 ET on Chicago, CG-11, during that period. The gyro also provided Pitch and Roll to keep the antenna level. I am embarrassed to say, I had no clue on HOW those 3 signals were generated.
These videos are a window into another life that I could have chosen and been just as happy as I am with the life I chose. So glad you share it with us.
Great video! In the movie Apollo 13, you hear them talk about "gimbal lock"; it means their ship has pointed in a direction that the gyros couldn't 'reach', and they are no longer accurate because they've tilted to an unrecoverable/unmeasurable angle and will require a realignment with 2 stars, to work again. The danger angles were shown as big, red dots on their black/white gauges, to tell the astronauts, "never point the ship in this direction or else you'll gimbal lock". Fascinating to see how they work, thanks Chief!
Basically same system as larger airplanes have. Military airplanes have always used gyros as main navigation device since GPS signal can be jammed or faked so GPS is usually used just to speed up the initial gyro align step.
A wonderful piece of kit - almost witchcraft how it finds North.... In case anyone wonders - if you try to turn a spinning wheel, it 'kicks' sideways. Only when the gyro is spinning parallel to the earth's spin is there no force during the 24h rotation of the Earth. Clever design (including the magic liquid we saw) converts any 'kick' into movement towards true parallel again. Thus the gyrocompass seeks and then shows true North. Love your film - if anything can show young people what life on a good ship can be like, it's your work. Please carry on making them, and safe passage to you and your crew....
Thank for the video Chief Makoi ! Looking at the technician installing the repaired unit reminded me of my days installing garbage disposals (haha). Surprisingly complicated precision instrument. Very interesting stuff.
Every single one of your videos is not only informative and fascinating, but also kind of zen to watch. You have such a calm voice, perfect for narration. I adore your channel.
in the early 1800s, there was a Royal Navy officer named Matthew Flinders. he was a first-class navigator. according to Bowditch in H.O. #9, there are two things that affect a compass. variation (natural things in and on the Earth) and deviation (objects around the compass on a ship). what Flinders came up with are iron bars placed near and around the compass that counteract the deviation. they were called "Flinders Bar".
I apologize if I missed you saying this, but I was left not understanding HOW a gyrocompass determined true north. Wikipedia says: - they find true north as determined by the axis of the Earth's rotation, which is different from, and navigationally more useful than, magnetic north, and - they are unaffected by ferromagnetic materials, such as in a ship's steel hull, which distort the magnetic field. So I assume that by "settling in," as you say, they are basically figuring out which way the world is rotating, and from that they derive compass directions. Really have been enjoying your videos since UA-cam surfaced you in my recommendations. Always informative, and occasionally, like the night passage through Istanbul and the three bridges, beautiful.
A long time since you posted but in case someone else wants to know... A gyroscope will - absent an external force - retain its direction in space. Because the earth is rotating, a gyroscope which is not parallel to the earth's axis will appear to move. By rotating the gyroscope to minimise this movement, it ends up parallel to the earth's axis and pointing towards true north.
Fantastic content! I came here by accident. After creating a gyro from LEGO to demonstrate the effects of a high speed revving mass (yes that really works), I decided to look up a bit more about gyros and came across this channel. Even though I’m a typical landlubber, loving sailing on a small open boat, I find myself watching many more of your movies.
Thank you for a concise explanation of the operation of a gyro compass. I would have to, on many occasions deliver a compass adjuster to a ship so he could swing it. Boarding the adjuster from my launch was always during daylight, while the ship was at anchor. Always, the adjuster would complete his tasks at night, when the ship was steaming to sea. The ship was "outside" had no need of a pilot. I had to always ask the master of the ship to slow maximally to 6 knots, the ideal speed to safely embark the adjuster. One real fear I had was, that I would go to the wrong ship at night. No AIS for a 60 ft launch. The position was always given relative to the sea buoy. All ships look alike at night. Some times a master would temporarily light up the deck for me.
I like watching you chief you are very mature for your years your calm demeanor calms down my anxiety. If I had to work on one of these slave ships I think I would like to work under you. God bless you Chief good job.
Again, Something I knew existed but knew nothing about. thanks for the education (ya learn something every day) & though I'm getting on in years, I never want to stop learning. THANKS!
Well you did it again, another super interesting video. I had never seen the insides of a Gyro so this was particularly interesting to me. You mentioned magnetic compasses which have been around for many many years...but as you said interference and specifically things such as magnetic anomalies can create havoc for a navigator. A friend of mine running his boat, which was a 50 footer found himself over 40 miles off course in a fog bank because someone had set a pair of metal pliers in a storage container beneath the compass (magnetic) housing...not only irritating but potentially dangerous. Thanks for the great video, so interesting and topical..Thanks Chief!!! All the best to you and yours...
Brings back memories of my working life when a few years ago I would have been the one coming on board to fix it. Interesting to see the sphere opened up in the workshop, it looked like a Microtechnica to me.
I was just watching your around the world video, wondering what type of compass was used. I spent 5 years in the USNavy and was specialized in the gyro compass, although that was in the mid 70's the theory is still the same the equipment is quite different. I enjoy your videos, especially the ones onboard in the engineering spaces on the equipment. Keep up the good work on making these videos.
Hi Chief MAKOi : Thank you for de-mystifying the Gyro Compass for me . I note from the cartoon character of yourself you appear with a Pipe for smoking Tobacco. I smoked pipe for many years - the most satisfying and leisure inducing. I was a Ship's Electrician from 1958 to 1966 on various ships of The Burma Five Star Line in my younger days. I'm now 78 and Retired Electrical Inspector on a nice Australian Government pension (50 years in Australia). I no longer smoke due to my health reasons. Thank you for your videos. The Mercantile Marine has changed so drastically - it's not much fun anymore. Best wishes to you and your family and ship mates. May you all be safe. 06/12/2020 Perth W.A.
Reminds me of crossing the Indian Ocean back in 76. The Gyro went haywire, all of a sudden a noise filled the air. A sort of soft singing noise but it sent a shiver down the spine. At first we thought we’d drunk too much Ouzo or the Puffa Fish hadn’t been cooked properly. Before we knew it the ship started to rotate, at first slow then faster and faster. We were being sucked into a giant whirlpool ! All I remember after that was waking up on a beach on a tropical island. A young lady appeared and gestured me to follow. We arrived at a small village. They fed me and gave me a funny medicine. I spent what must have been weeks lying on a rough mat of palm leaves inside a wooden hut. Every day I got stronger and soon we were all building a raft to return me home. I set sail after saying goodbye, it was tough to leave especially because of the young lady who became my friend but I didn’t belong there. I will never forget my time on the island.
I enjoy your videos Chief! The gyro is also supplying a heading (course) to the electronic chart (ECDIS) and the ARPA radar for them to function properly. One of the most important instruments on the bridge. Cheers from a ship's pilot in Sweden.
Man, I never thought I would be interested in this kind of content. Now I look forward to each of your videos. Thanks for these little escapes, from a landlubber.
Cool. Use a gyrocompass and you don't have to worry about magnetic declination, space weather, or magnetic interference. At work we mostly used a magnetic compass because they can be build more robust than a gyro.
We have been watching your videos, one after the other, for a few days now and are really amazed and delighted at how much we learn and experience, thanks to all the effort you go to in sharing your life on board. Thank you sincerely from Germany.
Chief as a convinced and fanatic landlubber i love your vids witch give me at least a whiff of the oceans and the ins and outs of the seafarer's life and ships ( or is it boat? ) ... thank you.
My new Navy Ensign friend (graduated from PMA few months ago) should be familiar w/this by now...he's about to start his very first ship assignment in the Navy...
Apologies if this sounds like a completely silly question (since I am not a sailor) but: How do those gyro compasses get calibrated? I would think they need some sort of base line or a reference point, but where / how do they get that? EDIT: Never mind, meanwhile I have pursued knowledge. It should have been obvious, but I think it boils down to "if you leave it alone for a while, the gyro will find true north on its own through the earth's rotation."
This was fascinating. Many moons ago, I was an avionics tech on high performance aircraft. But, I never got to see the insides of any of the gyroscopes that were part of the navigation systems. Different worlds....
Oh captain, have you by any chance seen the deviation card and the declination charts around here somewhere? We have a malfunction on the bridge. Yes, the GPS too. Bring the sextant as well.
They are only balanced for the self righting force. An unpowered sphere is timed for the rate it self rights when suspended in the fluid. It is balanced for vertical orientation and rate it rights when placed horizontal. This righting force by weight, and tilting force from the rotation of the earth orients the sphere, which is why it takes about 5 hours to orient after startup. There is NO manual adjustment to orient it. Only the housing is installed precisely to the keel. Orientation is only based on the rotation of the earth, which is factory calibrated on the compass installation of the housing. The "Calibration" is the orientation of the housing, which is oriented to the ship's keel, and the housing is not removed from it's location, so this calibration is not altered in repair. To confirm calibration, the ship gyrocompass feeds ship orientation to the satellite communication gyro stabilized antennas in the round radomes on top. Confirmation is when the satellite dish has the correct azimuth and links to the satellite. When the unit alarms, often the satellite will lose the link. First gyrocompass I worked on came in for the satellite communications were down. It was down because the bearing from the gyrocompass was wrong. The crew knew the gyrocompass went down and was using GPS to navigate, but didn't know the communications required an accurate compass heading to steer the dish.
This is very interesting , the magnetic compass (gimbal or not ) has 4 errors- acceleration, deceleration, variation and deviation. The gyro in the plane after extended flights would drift sometimes and I would always double check with the magnetic ? This was equipment made 65 years ago. What resets the gyro to keep it true? Your videos are so informative, thanks.
The plane is a lot faster than a ship, so it doesn't drift as much as a gyro in a plane. For highspeed vessels (40+ knots) the gyro compass needs to be certified.
I was amazed when the technician pulled out the gyrosphere enclosure and started to dismantle it on the floor of the bridge…! Can you say why spinning gyroscopes are still in use? I would have thought a solid-state inertial reference unit would be cheaper and more reliable today.
Is that gyrocompass equivalent to an inertial measurement unit (IMU) used in aircraft? How is it calibrated (what determines that it is indicating the correct heading)? Does GPS data play into the eventual reading? I know, lots of questions. Fascinating stuff!!
After recently stumbling on your videos, I am amazed at the life at sea, a career I did not choose, but might have if I was younger. I am enjoying your videos and look forward to the next. But, I have a question about your Gyro Compass. I found the video very interesting, but since I am not a sailor, and not familiar with the device (I am familiar with a magnetic compass and have used them many times), but what is the inter numbered ring that is rotating within the Gyro Compass face?
The inner number on the repeater compass is the last digit in the 3 digit degree, on which you are heading. If you look at 2:00 you see the needle is between 210 and 220 degrees. As this small markings are not easy to read, you have the inner ring, which indicates the last digit. So in this case the heading is 217.4 degrees.
You should do a video when ship is going through inspection via Class/flag or Surveyors, like Radio Inspection, GMDSS, VDR, etc. Should be pretty interesting to see on the side of ship's crew point of view
Great of you to set a timer for when the sponsor is over. I appreciate that.
I was struck by how small and compact the gyro unit was compared to what I was trained on. My experience is with US Navy systems dating back to the 60's and 70's. I was always somewhat amazed at how a unit (Sperry Mk 19) could provide such precise heading info (plus pitch/roll info for weapons systems) while being controlled from a separate cabinet full of banks of vacuum tubes. Total time from startup to accurate was about 24 hours.
The ship I was on had a secondary unit (Sperry Mk 23) which was all solid-state, but it was actually not as accurate as the dinosaur bolted to the middle of my shop floor. Pitch and roll accuracy forced the gyros to be located centerline and on the 3rd deck...about 10 feet below our laden waterline. This means that every gyro indicator on board was actually a repeater fed from my shop...about 10 total.
If curious, look up USS Kansas City (AOR-3) sometime. You haven't transferred fuel and cargo until you transfer it to another ship....at 17 knots. Needless to say, accuracy of ship's control and navigation equipment was a BIG thing.
When did you go to IC "A" school? I did mine in the Summer of 1973.
Out of school, my first ship was AD-38, USS Puget Sound. We had a MK23 bolted to the floor, as well. Being a repair ship, the Puget Sound was seldom underway, so the gyro was more like room decor most of the time.
Then I got sent off to a Adams-class DDG. That gyro was designed for a warship, the Mk 19. Spent two full years underway on that one. It used to be fun to look down through the glass top on the gyro and watch the stable element "move". If you know gyros, then you know that the stable element doesn't "move" at all - it is rock solid and the ship is moving all around it in azimuth, roll and pitch.
@@jeffreyhill8040 I started the 22-week Instructor-led IC "A" course in November 1988. NTC San Diego. I wasn't from the 60's and 70's...the ship was.
@@kevincrosby1760 Thanks! Things have indeed changed. When I moved to So Cal in 2001, I went back down and explored San Diego. The Naval Training Center was mostly gone, but the brick building where you and I went to "A" school was still there.
I toured one of the new Arleigh Burke destroyers down there about ten years ago and couldn't recognize much of anything in Engineering.
I was a SPS-30 ET on Chicago, CG-11, during that period. The gyro also provided Pitch and Roll to keep the antenna level. I am embarrassed to say, I had no clue on HOW those 3 signals were generated.
I will always look forward on how you put up your words and precisely explain or narrate it for your audience. Thank you sir
These videos are a window into another life that I could have chosen and been just as happy as I am with the life I chose. So glad you share it with us.
always learning something from tuning in - keep inspiring & safe travels
Thanks Nick!
@@ChiefMAKOi hi chief please your email?
@@samarine2358 Here is the chief's Facebook page from which you might be able to Message him: facebook.com/chiefmakoiseamanvlog/.
Great video! In the movie Apollo 13, you hear them talk about "gimbal lock"; it means their ship has pointed in a direction that the gyros couldn't 'reach', and they are no longer accurate because they've tilted to an unrecoverable/unmeasurable angle and will require a realignment with 2 stars, to work again. The danger angles were shown as big, red dots on their black/white gauges, to tell the astronauts, "never point the ship in this direction or else you'll gimbal lock". Fascinating to see how they work, thanks Chief!
"so, lets check it out" !! endless curiosity is satiated in this type of production. thank you Chief.
Thank you for adding a timer to the sponsered segment
Basically same system as larger airplanes have. Military airplanes have always used gyros as main navigation device since GPS signal can be jammed or faked so GPS is usually used just to speed up the initial gyro align step.
Gladly i'm a teacher. However, i'm moved with your vid bro. Keep it up. Pray you safe. With love and respect from MALAYSIA.
A wonderful piece of kit - almost witchcraft how it finds North.... In case anyone wonders - if you try to turn a spinning wheel, it 'kicks' sideways. Only when the gyro is spinning parallel to the earth's spin is there no force during the 24h rotation of the Earth. Clever design (including the magic liquid we saw) converts any 'kick' into movement towards true parallel again. Thus the gyrocompass seeks and then shows true North.
Love your film - if anything can show young people what life on a good ship can be like, it's your work. Please carry on making them, and safe passage to you and your crew....
Chief,
My best love, wishes and regards to you, your family and the whole crew. May God bless all.
Thank for the video Chief Makoi ! Looking at the technician installing the repaired unit reminded me of my days installing garbage disposals (haha). Surprisingly complicated precision instrument. Very interesting stuff.
Every single one of your videos is not only informative and fascinating, but also kind of zen to watch. You have such a calm voice, perfect for narration. I adore your channel.
in the early 1800s, there was a Royal Navy officer named Matthew Flinders. he was a first-class navigator. according to Bowditch in H.O. #9, there are two things that affect a compass. variation (natural things in and on the Earth) and deviation (objects around the compass on a ship). what Flinders came up with are iron bars placed near and around the compass that counteract the deviation. they were called "Flinders Bar".
I apologize if I missed you saying this, but I was left not understanding HOW a gyrocompass determined true north. Wikipedia says:
- they find true north as determined by the axis of the Earth's rotation, which is different from, and navigationally more useful than, magnetic north, and
- they are unaffected by ferromagnetic materials, such as in a ship's steel hull, which distort the magnetic field.
So I assume that by "settling in," as you say, they are basically figuring out which way the world is rotating, and from that they derive compass directions.
Really have been enjoying your videos since UA-cam surfaced you in my recommendations. Always informative, and occasionally, like the night passage through Istanbul and the three bridges, beautiful.
A long time since you posted but in case someone else wants to know...
A gyroscope will - absent an external force - retain its direction in space. Because the earth is rotating, a gyroscope which is not parallel to the earth's axis will appear to move. By rotating the gyroscope to minimise this movement, it ends up parallel to the earth's axis and pointing towards true north.
What a piece of equipment! Some of the greatest most beautifully complex pieces of equipment come from maritime navigation. So cool.
Chief sayong mga videos lang talaga yung mga pinapanood ko na hindi ko makakalimutan yung mga aral grabe sobrang professional thumbs-up👍!!
Excellent! Have been interested in the workings of the gyrocompass since my Navy days. Thanks!
Lesson taught and learned....thank you Chief.
Absolutely fascinating and so clear. Thank you Chief
Fantastic content! I came here by accident. After creating a gyro from LEGO to demonstrate the effects of a high speed revving mass (yes that really works), I decided to look up a bit more about gyros and came across this channel.
Even though I’m a typical landlubber, loving sailing on a small open boat, I find myself watching many more of your movies.
Thank you for a concise explanation of the operation of a gyro compass. I would have to, on many occasions deliver a compass adjuster to a ship so he could swing it. Boarding the adjuster from my launch was always during daylight, while the ship was at anchor.
Always, the adjuster would complete his tasks at night, when the ship was steaming to sea. The ship was "outside" had no need of a pilot. I had to always ask the master of the ship to slow maximally to 6 knots, the ideal speed to safely embark the adjuster. One real fear I had was, that I would go to the wrong ship at night. No AIS for a 60 ft launch. The position was always given relative to the sea buoy. All ships look alike at night. Some times a master would temporarily light up the deck for me.
Your passenger was adjusting the magnetic compass, not the gyro
I like watching you chief you are very mature for your years your calm demeanor calms down my anxiety. If I had to work on one of these slave ships I think I would like to work under you. God bless you Chief good job.
Very detailed takes me back to my master helm days thanks chief
This is super content. Your delivery style plus the filming and editing make it easy to watch. Thanks
Again, Something I knew existed but knew nothing about. thanks for the education (ya learn something every day) & though I'm getting on in years, I never want to stop learning. THANKS!
Thank you for the lesson on this important piece of equipment! It is a great learning experience from you! Much Mabuhay and aloha, Chief! Salamat Po!
I remember when I was a deck cadet I learn that's equipment on the bridge and how to use and etc thank you of the learning of your videos..
So happy everytime I see you uploaded something new. Loving it.
Well you did it again, another super interesting video. I had never seen the insides of a Gyro so this was particularly interesting to me. You mentioned magnetic compasses which have been around for many many years...but as you said interference and specifically things such as magnetic anomalies can create havoc for a navigator. A friend of mine running his boat, which was a 50 footer found himself over 40 miles off course in a fog bank because someone had set a pair of metal pliers in a storage container beneath the compass (magnetic) housing...not only irritating but potentially dangerous. Thanks for the great video, so interesting and topical..Thanks Chief!!! All the best to you and yours...
Brings back memories of my working life when a few years ago I would have been the one coming on board to fix it. Interesting to see the sphere opened up in the workshop, it looked like a Microtechnica to me.
It's a Anschütz gyropshere for the old Standard 4 Gyro compass.
I was just watching your around the world video, wondering what type of compass was used. I spent 5 years in the USNavy and was specialized in the gyro compass, although that was in the mid 70's the theory is still the same the equipment is quite different. I enjoy your videos, especially the ones onboard in the engineering spaces on the equipment. Keep up the good work on making these videos.
Hi Chief MAKOi : Thank you for de-mystifying the Gyro Compass for me . I note from the cartoon character of yourself you appear with a Pipe for smoking Tobacco. I smoked pipe for many years - the most satisfying and leisure inducing. I was a Ship's Electrician from 1958 to 1966 on various ships of The Burma Five Star Line in my younger days. I'm now 78 and Retired Electrical Inspector on a nice Australian Government pension (50 years in Australia). I no longer smoke due to my health reasons. Thank you for your videos. The Mercantile Marine has changed so drastically - it's not much fun anymore. Best wishes to you and your family and ship mates. May you all be safe. 06/12/2020 Perth W.A.
Reminds me of crossing the Indian Ocean back in 76. The Gyro went haywire, all of a sudden a noise filled the air. A sort of soft singing noise but it sent a shiver down the spine. At first we thought we’d drunk too much Ouzo or the Puffa Fish hadn’t been cooked properly. Before we knew it the ship started to rotate, at first slow then faster and faster. We were being sucked into a giant whirlpool ! All I remember after that was waking up on a beach on a tropical island. A young lady appeared and gestured me to follow. We arrived at a small village. They fed me and gave me a funny medicine. I spent what must have been weeks lying on a rough mat of palm leaves inside a wooden hut. Every day I got stronger and soon we were all building a raft to return me home. I set sail after saying goodbye, it was tough to leave especially because of the young lady who became my friend but I didn’t belong there. I will never forget my time on the island.
I enjoy your videos Chief! The gyro is also supplying a heading (course) to the electronic chart (ECDIS) and the ARPA radar for them to function properly. One of the most important instruments on the bridge.
Cheers from a ship's pilot in Sweden.
Salamat sa lahat ng mga vlogs mo sir Chief Makoi, marami akong natutunan. more power po sir, God Bless you po ❤️
Afternoon. Great video of how your ship 🚢 functions 👍🏻
This is fascinating.
I never would've guessed a non-magnetic compass existed.
Man, I never thought I would be interested in this kind of content. Now I look forward to each of your videos. Thanks for these little escapes, from a landlubber.
GOOD MORNING CHIEF. VERY INTERESTING. THANK YOU FOR GIVING US A GLIMPSE INTO A LIFE I CAN ONLY IMAGINE. EVEN THE SPONSOR WAS INTERESTING
Good video. That was very interesting. Thank you for posting it. See you next time.
Thankyou capt. I'm doing my module now but i watched this video I inspired and boost my confidence to finish my module 😂 Shout next vlog.♥️
He is not a captain. He is a chief. Chief of all engineer onboard of his ship.
Sorry I been hang up to my modules HAHAHA sorry Chief Makoi.
ı am the third officer :) whşle ı was searching detail of gyro working principle ı found this video. Video is so benefital. thank u so much sir :)
Cool. Use a gyrocompass and you don't have to worry about magnetic declination, space weather, or magnetic interference. At work we mostly used a magnetic compass because they can be build more robust than a gyro.
Love your videos bru.
It appeared on my feed about two months ago, and I subscribed today.
Keep up the good work, it's awesome
my favourite based sea channel
Salamat Chief M for this informatve detailed and amazing Video, may the seas be calm and your course always be true....!
This video help me a lot for my Navigation subject, Midshipman Sumagaysay sir. Sir thank you sir.
Interesting commentary... good one. I always watch your channel each video till end.👍
We have been watching your videos, one after the other, for a few days now and are really amazed and delighted at how much we learn and experience, thanks to all the effort you go to in sharing your life on board. Thank you sincerely from Germany.
I work in a company designing and manufacturing gyre compasses. Interesting to see them in action.
Chief as a convinced and fanatic landlubber i love your vids witch give me at least a whiff of the oceans and the ins and outs of the seafarer's life and ships ( or is it boat? ) ... thank you.
I remember which term is which by this little jingle: ships carry boats (e.g., a lifeboat); boats don't carry ships.
I've always wondered how that big compass thing on a ship worked! thanks for that
Interesting topic...Thank you Chief for sharing.
Very interesting. Thank you, Chief!
My new Navy Ensign friend (graduated from PMA few months ago) should be familiar w/this by now...he's about to start his very first ship assignment in the Navy...
I found this video and all your others so interesting! Keep up the great content!
I do watch and a helmsman on bridge at night so I find this interesting. Very informative. Galing mo chief
As always another great video.
Such a sophisticated piece of equipment but they still needed the empty water bottle for a container.
Apologies if this sounds like a completely silly question (since I am not a sailor) but:
How do those gyro compasses get calibrated? I would think they need some sort of base line or a reference point, but where / how do they get that?
EDIT:
Never mind, meanwhile I have pursued knowledge. It should have been obvious, but I think it boils down to "if you leave it alone for a while, the gyro will find true north on its own through the earth's rotation."
FBS number 1. ❤️
Thanks Chief. ⚓️
This was fascinating. Many moons ago, I was an avionics tech on high performance aircraft. But, I never got to see the insides of any of the gyroscopes that were part of the navigation systems. Different worlds....
Hi chief ! Can you do a video about the ships AIS, GPS, and echo sounder next ?
Very interesting and educational! Keep it coming and safe travel.
As always fascinating , thank you for posting
Good information about the Gyrocompass and its maintenance🚢👍 ... a greeting and good navigation
Oh captain, have you by any chance seen the deviation card and the declination charts around here somewhere? We have a malfunction on the bridge. Yes, the GPS too. Bring the sextant as well.
Must admit that it would have been the last thing that I would learn about today. Thank You .... very interesting.
Informative and interesting as always.... Thanks Chief ! Just bought a beginners sextant and am having fun learning how to use it :)
Great Video, love the direction you are taking. ;-)
Thank you sir! very timely, we are studying this at the moment
after the suez crisis. hehe, I stumbled across Makoi, hes a good bloke. anytime your on port, come for dinner.
¿how is the GC calibrated after the replacement and repowering?, using the magnetic compass?, what's the reference used?
They are only balanced for the self righting force. An unpowered sphere is timed for the rate it self rights when suspended in the fluid. It is balanced for vertical orientation and rate it rights when placed horizontal. This righting force by weight, and tilting force from the rotation of the earth orients the sphere, which is why it takes about 5 hours to orient after startup. There is NO manual adjustment to orient it. Only the housing is installed precisely to the keel. Orientation is only based on the rotation of the earth, which is factory calibrated on the compass installation of the housing. The "Calibration" is the orientation of the housing, which is oriented to the ship's keel, and the housing is not removed from it's location, so this calibration is not altered in repair. To confirm calibration, the ship gyrocompass feeds ship orientation to the satellite communication gyro stabilized antennas in the round radomes on top. Confirmation is when the satellite dish has the correct azimuth and links to the satellite. When the unit alarms, often the satellite will lose the link. First gyrocompass I worked on came in for the satellite communications were down. It was down because the bearing from the gyrocompass was wrong. The crew knew the gyrocompass went down and was using GPS to navigate, but didn't know the communications required an accurate compass heading to steer the dish.
@@isettech very interesting
Thanks Chief, Enjoyed
Another great one ! Thanks for the education !
Love your videos! Stay safe my friend!
You make great videos.
Merry Christmas Chief to you and your family,and a safe and happy new year
Nice Video Chief am learning alot ...
Very interesting chief. Stay safe.
Excellent vlog as usual Chief stay safe 👊🇮🇪
Keep the videos coming there awesome!!
Apart from a panic over the gyro coming out of Houston in 1974 on the "Sugar Importer" we had few compass problems.
Keep it up, Chief.
I've been motivated by your vids
I really enjoy learning from you videos salamat po chief
This is very interesting , the magnetic compass (gimbal or not ) has 4 errors- acceleration, deceleration, variation and deviation. The gyro in the plane after extended flights would drift sometimes and I would always double check with the magnetic ? This was equipment made 65 years ago. What resets the gyro to keep it true? Your videos are so informative, thanks.
The plane is a lot faster than a ship, so it doesn't drift as much as a gyro in a plane. For highspeed vessels (40+ knots) the gyro compass needs to be certified.
I was amazed when the technician pulled out the gyrosphere enclosure and started to dismantle it on the floor of the bridge…!
Can you say why spinning gyroscopes are still in use? I would have thought a solid-state inertial reference unit would be cheaper and more reliable today.
Is that gyrocompass equivalent to an inertial measurement unit (IMU) used in aircraft? How is it calibrated (what determines that it is indicating the correct heading)? Does GPS data play into the eventual reading?
I know, lots of questions. Fascinating stuff!!
Always interesting, always top quality!
Thank you very much sir for always sharing your knowledge we really appreciated SNAPPY SALUTE SIR
C/E MAKOI
After recently stumbling on your videos, I am amazed at the life at sea, a career I did not choose, but might have if I was younger. I am enjoying your videos and look forward to the next. But, I have a question about your Gyro Compass. I found the video very interesting, but since I am not a sailor, and not familiar with the device (I am familiar with a magnetic compass and have used them many times), but what is the inter numbered ring that is rotating within the Gyro Compass face?
The inner number on the repeater compass is the last digit in the 3 digit degree, on which you are heading. If you look at 2:00 you see the needle is between 210 and 220 degrees. As this small markings are not easy to read, you have the inner ring, which indicates the last digit. So in this case the heading is 217.4 degrees.
As usual, great content .
Make a video about the captain one day chief!
After waiting for many days finally its here
What described is extremely accurate. I know since i'm the dude that repairs it. Mine runs on 400Hz. So, even the convertor was my problem.....
You should do a video when ship is going through inspection via Class/flag or Surveyors, like Radio Inspection, GMDSS, VDR, etc. Should be pretty interesting to see on the side of ship's crew point of view
That would be impossible because I'm usually at the frontline when audits happen. Job comes first. 😊
I don't think the surveyors would appreciate being filmed either! (Speaking as a retired GMDSS & VDR surveyor).
Thank you for your hard work , great videos 👏🙏