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Old 22-01-2017, 20:02   #16
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Re: Installing Underwater Lighting

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Originally Posted by john61ct View Post
FlipSnack

is their latest (2015) catalog

Think they could use some web/marketing help.
I have sent them an information and price request - sounds interesting.
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Old 22-01-2017, 20:08   #17
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Re: Installing Underwater Lighting

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Yes, your lights need be mounted underwater. Thanks

And once in place, you will do best running them 24 hours. That keeps away condensation inside the light mounting. OK

What colour are you choosing? Blue or turquoise would be first choice

On the E coast of Aus, experience* suggests that fouling over blue lights is only soft organisms. In contrast to white light, which also attracts hard (e.g. coralline algae and worms in hard sheaths). Depending on the biota in your anchorage, fish will graze soft growth and maintain it at a minimum.
Good !

* Experience reports from sportfishers (e.g. marlin and other gamefishers) moored at marinas in both Cairns and Moreton Bay.

Avoid red light. It scatters and is absorbed and so does not travel far (i.e. no depth if your lights point down, no distance if your lights are closer to horizontal). I think it would look rather strange - a bloodbath?

Blue light (wavelength 440 - 490 nm) travels furtherest.

Squid boats in the Gulf of Thailand use green (and have their massive banks of lights above water, not underwater). The argument apparently is that although squid are more attracted to blue than to green, the green attracts fewer fish and turtles.
Thanks for the advice - comments above.
David
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Old 22-01-2017, 22:28   #18
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Re: Installing Underwater Lighting

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Gulf of Thailand at night from the ISS
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Old 23-01-2017, 00:22   #19
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Re: Installing Underwater Lighting

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Gulf of Thailand at night from the ISS
Wow! Is the implication that all that green is from squid boats? If so, that's incredible.

Neat pic anyhow!

Jim
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Old 23-01-2017, 04:01   #20
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Re: Installing Underwater Lighting

What were the 'alien' green lights seen from space this week? Mysterious glow over Thailand that left astronaut baffled turns out to be...fishing boats | Daily Mail Online

Also, an interesting .pdf from the University of Hawaii

http://uhero.hawaii.edu/assets/NOAA_...compressed.pdf
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Old 23-01-2017, 10:03   #21
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Re: Installing Underwater Lighting

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Wow! Is the implication that all that green is from squid boats? If so, that's incredible.

Neat pic anyhow!

Jim
Yes, very visible from on the water as well.

But not people you want to mess with, the industry uses a lot of slave labor, mostly Cambodian, Burmese and Rohingya, with trafficking protection from mafia higher-ups in the Thai military.

https://www.google.com/amp/s/amp.the...d-thai-fishing

https://www.theguardian.com/global-d...world/thailand

Off-topic I know, but please do check country-of-origin labels on your seafood and pay a little more for product from other parts of the world.
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Old 26-01-2017, 19:36   #22
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Installing Underwater Lighting

Our C-385 came factory equipped with a Dr Led underwater light. It is mounted just forward of rudder post in a brass/bronze thru-hull housing.
It is green, and after a comprehensive study at the local stink bote marina I have decided green is the best color.
White shows all of the water cooties,....blue, red too dark....pink...well you know.

Jury is still out on Dr Led longevity and customer service.

Btw....my boat has 4 underwater thru- hulls........what is one more???

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Old 27-01-2017, 05:12   #23
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Re: Installing Underwater Lighting

And there I was thinking "I'll get a boat and get out and away from all the light pollution back home" Oh well live and learn.
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Old 27-01-2017, 06:26   #24
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Re: Installing Underwater Lighting

Careful, I believe the green wavelengths attract the Kraken.

https://animalsinfolklore.files.word...rt-d33tchk.jpg

https://www.krakenunderwaterfishligh...r-dock-lights/
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Old 27-01-2017, 07:27   #25
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Re: Installing Underwater Lighting

I actually expect such a led to be spectacular on passage, when fish (big ones???) are following the boat
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Old 27-01-2017, 16:13   #26
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Re: Installing Underwater Lighting

Don't worry about the Kraken unless you are sailing in the far north Atlantic, Cthulhu's star spawn are a far worse threat and are much more widespread!
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Old 27-01-2017, 16:29   #27
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Re: Installing Underwater Lighting

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Nice idea, but $150? They'd be $20 if they didn't have the word "fishing" in the name.
$27 US on Amazon

https://www.amazon.com/Amarine-made-...+fishing+light
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Old 28-01-2017, 06:47   #28
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Re: Installing Underwater Lighting

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Don't worry about the Kraken unless you are sailing in the far north Atlantic, Cthulhu's star spawn are a far worse threat and are much more widespread!
They're only attracted to blue wavelengths
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Old 28-01-2017, 08:23   #29
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Re: Installing Underwater Lighting

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Can you at least say what the name of the product is? Their website is not searchable.


Sorry for the delay. The name of the lights we got are The Nightwatch Underwater Lights.
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Old 26-03-2017, 16:24   #30
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Re: Installing Underwater Lighting

Mine is out for a refit right now and I am going to check and see where I might be able to put one. We are on a lake now but will either trade up or take it to the coast next year.

I am already changing out mast lights to led and adding a rear facing flood with 2 spots on the 1st spreaders which certainly cover anything rafting up or docking. At night we have the cockpit lights in the arch and they are dimming but it would be nice to see in the water some without lighting up like a campsite.

hope to splash in a month

Ron
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