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post #1 of 5 Old 10-09-2010 Thread Starter
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Mounting a compass on a steel yacht

Hi , I have a Bruce Roberts 38 that was modified by a mad engineer so she has a steel deck ,cabin and pilot house . This is great for strength , no leaks etc but pretty hard to mount a compass on . I've heard you need to mount any compass 600mm from any steel , and that you can approximately swing it and adjust with the magnets inside . Any one had any experiance with this as I really want a non electronic backup (ie not a fluxgate) to my GPS. Ive just purchased a second hand Heath compass so if anyone has experince with those let me know
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post #2 of 5 Old 10-10-2010
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IIRC, the compasses designed for installation on steel boats have to have compensators. You can't install just any compass on a steel boat. They usually look like this:



If your compass doesn't have the two compensators, then you're going to have to buy a different one.

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post #3 of 5 Old 10-10-2010
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Not absolutely correct SD. Raven is steel, does not have a compass as you illustrate but it does have lumps of metal inside that can be moved. Yes , what you show is called a 'steel boat compass' but it seems other models work also.

I'd think a Compass Adjuster would be the person to ask regarding a particular unit.

Which reminds me I need to get hold of one.

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post #4 of 5 Old 10-10-2010
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Lumps of metal that can be moved? I thought these we balanced!
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post #5 of 5 Old 10-10-2010
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Quote:
Originally Posted by sailor50 View Post
Lumps of metal that can be moved? I thought these we balanced!
were balanced ?

quite possibly... I'll be straight with you.....all this compass adjustment business is a black art to me. All I know is that I have a steel boat that has a compass that is is relatively accurate, has been installed for twenty odd years and doesn't have the ourtigger balls.

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