Magnetic Compass Navigation on a Submarine: When All Else Fails!

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USS Cod Submarine Memorial

Күн бұрын

Пікірлер: 50

@crazyguy32100 4 ай бұрын

"Where the hell are we going?" Hard question for any man to ask, even harder if you can't look out the window.

@daler1584 4 ай бұрын

Thanks Paul and Evan you do the things that museum ship curators are all about. Nice details about the boat that are usually overlooked and give credit where credit is due. Nice shout out to the crew of the Pampanito and Bowfin. You guys are the best.

@oaw117 4 ай бұрын

Glad to see US submarines working together. Preservation wolfpack tactics.

@wtmayhew 4 ай бұрын

Thank you for another very informative video. One of my favorite reference books is Chapman’s _Piloting, Seamanship and Small Boat Handling_ . There’s a very good section on the use of the compass and instructions for boxing the compass to set the compensation. Boxing the compass was obviously a tedious and time consuming process. It is obviously even more important on a sub than a surface ship. With a war on, it would have been that much less fun job - you might have to be compensating the compass while risking being attacked.

@garyhock2043 4 ай бұрын

I love your content Paul, always interesting. You and Ryan on USS New Jersey always give us a history lesson. I have always been enamored by World War 2 U. S. Submarines, don’t know why, maybe I was a crew member on one, in another life.

@stinker43 4 ай бұрын

I know I was born about 50 years too late. Had I been around then, I would have served in the Silent Service in WWII.

@BB12659 4 ай бұрын

Drove by the COD on our way to the AirShow yesterday. We saw the torpedo, saluted the COD, and saw all the sites and sounds of Cleveland's downtown. The Blue Angels worth the trip, to be sure. I can't imagine doing things with a T-Square, slide rule, magnetic readings, etc., but then again, I'm not cut from the same fabric of/as these men that did it. Thanks, Paul!

@nilo70 3 ай бұрын

You guys started up the engine !! It still works ! That was an exciting moment for me . Cheers From California 😎

@HongyaMa 4 ай бұрын

Curator Compass Compensator Competition - GO!

@jastrapper190 4 ай бұрын

I served in a Marine Light Armored Reconnaissance BN. Drove around in 17 ton Light Armored Vehicles. Did a lot of time in the Middle East were much of the terrain is primarily desert. During my day the military was just starting to issue us GPS devices called the “Plugger” which was a gigantic GPS device. Nowadays you can fit a GPS into a wrist watch. But then you either used the Plugger… but not everyone had them… so then it was a good old compass and map. The LAV had no internal compass. And if you ever wanted to get a truly accurate bearing… the VC (Vehicle Commander) would order out one of the scouts in the back to take a lensatic compass and walk a good distance away from the steel hull of the vehicle (also minus a rifle) and shoot a bearing. In many ways… navigating an LAV in the desert was like navigating a sub at sea. Zero reference points. You navigated by speed, watch, azimuth, map… and that’s about it.

@robertwells6454 4 ай бұрын

Thank You for putting Yourself in harms way for Our Country. 🙏4🇺🇲

@hond654 4 ай бұрын

BTW that skill is still absolutely necessary. GPS jamming is a thing...Hope it is still taught.

@Loiyaboy 4 ай бұрын

Paul is awesome. Just so entertaining. He makes these videos fun to watch. I love it.

@spaceghostohio7989 4 ай бұрын

Another banger Paul !

@jastrapper190 4 ай бұрын

Awesome video… such a little part of the boat… but soooo important to have available as a backup. Getting an accurate bearing when even a tiny fraction of an arc/slice of the degree pie… translated by 1,000 miles in the Pacific Ocean… meant being off by so far that you might not even find the island you’re trying to find. It might be over the horizon far.

@nigelterry9299 4 ай бұрын

Paul and Evan you put yourselves through hell for us. Many thanks. I thought two black balls indicate a vessel out of control!

@railroad9000 4 ай бұрын

Even the wooden hulled minesweeper I was stationed on had a magnetic compass with the navigator's balls along with the gyro compass!

@stinker43 4 ай бұрын

I work on the restoration of USS Lucid (MSO 458, Stockton CA), and, it being all non-ferrous (to prevent activation of magnetic mines), I never thought to look for the flinders compensators. Next time I'm out there, I'll have to look or inquire. I have them on the compass on my boat, and spun that compass a couple times on SF Bay. Now with GPS, not so much. I still keep a deviation card, however, but rarely use it.

@SamuelJKatt99 4 ай бұрын

The more you learn about the fleet subs the more you realize how much there is to know

@fakshen1973 4 ай бұрын

Hey... if I have steal ones... I can navigate blindly underwater with them.... sounds about right.

@PeterNebelung 4 ай бұрын

Steel hulls and compasses aren't happy with each other. They need something to make them play nice, and those are the big steel balls which are adjusted so that the compass will actually read magnetic north. There is also a list of the deviation at various readings, so you can apply them when marking the course on the chart.

@ravenbarsrepairs5594 4 ай бұрын

My real question, as a woodsman, is if they intentionally sailed off course slighty so they would know which way to turn once they reached a backstop(i.e. shore), to find their target.

@Billtwiggmeister 4 ай бұрын

Gimbals.

@Russojap2 4 ай бұрын

Nice video!

@USSCod 4 ай бұрын

Could you contact us via our info on our channel page? We’d like to send you something!

@Russojap2 4 ай бұрын

@@USSCod Ok, I'll try! 😮 Thank you!

@danquigg8311 4 ай бұрын

As I understand gyro compass operations . . . they 'automatically' align themselves to true north when they spin up to operation speed, and it takes a while for this to happen. Is the correct? And how does the gyro compass sense true north?

@paulfarace9595 4 ай бұрын

You're correct about time to spin up... not sure how they indicate north beyond perhaps being set initially... ant experts chime in now!

@Kevin-go2dw 4 ай бұрын

Not sure where you are heading, but this video might help a little bit.

@mbterabytesjc2036 4 ай бұрын

Good to know a submarine is not a perfect faraday cage or the compass wouldn't have been able to work.

@servicetrucker5564 4 ай бұрын

Faraday cages cannot block stable or slowly varying magnetic fields, such as the Earth's magnetic field (a compass will still work inside one). Taken from Wikipedia

@randyogburn2498 4 ай бұрын

Thanks for another interesting video. In the conning tower, near your head, it looks like some type of coil is that part of the cooling system or something else?

@paulfarace9595 4 ай бұрын

Air conditioner booster for conning tower... good eye!

@RichardKroboth 4 ай бұрын

Hi Paul, How often did subs when surfaced, use a sextant to double check their position and use that info to check how accurate the subs compasses?

@paulenterline3107 4 ай бұрын

How in the world does one calibrate a magnetic compass without a properly calibrated magnetic compass that shows where magnetic north really is?

@satunnainenkatselija4478 3 ай бұрын

One uses the best reference available. On the Cod, that is the gyro compass. If no reference compasses are available then landmarks and navigational aids are the only way to estimate true heading.