best way to mount Aluminium to steel underwater - Page 3 - SailNet Community
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post #21 of 25 Old 01-12-2013 Thread Starter
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Re: best way to mount Aluminium to steel underwater

Thanks, great advice and looks like a good book
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post #22 of 25 Old 01-13-2013
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Re: best way to mount Aluminium to steel underwater

I'm a bit curious, what is the purpose of the underwater lights for you? One thing I have noticed with most that the customers are usually underwhelmed with what they see in the water. They are more decorative than anything, sort of like the under car lights, while most people seem to expect them to act as big spotlights to see lots of fish etc, or functional that they could see the bottom.
Especially if there's any pollution in the water, or boats with swim grids on the back, it doesn't look anything like the photos in the ads.
The latest ones we're using are these: OceanLED - Colours TH HD
they are a lot brighter, bronze and use a much smaller hole, with a synthetic spacer for metal hulls, power hungry though.
What about surface mounting them? If it's just for goofing around at anchor, you could put a magnet on a nice waterproof bright light and stick it over the side and have a useful tool in the meantime.
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post #23 of 25 Old 01-14-2013
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Re: best way to mount Aluminium to steel underwater

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Originally Posted by Jgbrown View Post
I'm a bit curious, what is the purpose of the underwater lights for you? One thing I have noticed with most that the customers are usually underwhelmed with what they see in the water. They are more decorative than anything, sort of like the under car lights, while most people seem to expect them to act as big spotlights to see lots of fish etc, or functional that they could see the bottom.
Especially if there's any pollution in the water, or boats with swim grids on the back, it doesn't look anything like the photos in the ads.
The latest ones we're using are these: OceanLED - Colours TH HD
they are a lot brighter, bronze and use a much smaller hole, with a synthetic spacer for metal hulls, power hungry though.
What about surface mounting them? If it's just for goofing around at anchor, you could put a magnet on a nice waterproof bright light and stick it over the side and have a useful tool in the meantime.
This sounds like a good idea, as the synthetic spacer would have to be very thick to protect it as salt water will act as the conductor. The only problem is that most of these lights need the water for cooling, so it would not be much use out of the water. They can be useful to attract fish, and I imagine lots of insects. In most waters it is too cloudy to see anything, so useless. Might help for diving to clear a prop. With the exception to attracting fish, these always seemed like the under car lights, and coffee can mufflers on cars, all show and nothing for go.
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post #24 of 25 Old 01-15-2013 Thread Starter
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Re: best way to mount Aluminium to steel underwater

The ones I'm contemplating are blue, LED, and just fo augment other lights I'm putting on deck to make it kinda pretty at night. Or stupid/tacky depending on how you look at it I guess.
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post #25 of 25 Old 01-15-2013
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Re: best way to mount Aluminium to steel underwater

I like the look of a sailboat with small decorative white lights under each spreader. They have a little bit of that "look at me" factor, but they serve a great purpose in identifying your boat among a hundred anchor lights at night. I've also seen a light installed under the boom to create a sort of night light, while walking through the cockpit. These seem classier to me than blue stinkpotter hull lights.

I have neither, but I do have the underwater lights installed by the prior owner. They aren't colored for decoration, they are underwater flood lights, which I've used on other boats in the Caribbean. Its like having your own aquarium at night. But up here, they are utterly useless and worry me.


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