I have been looking for the same thing. Sometimes, when making the overnight lap between Seward and PWS, It is necessary to light up the water
to see what's rolling your way. Even crossing in the summer, there are some hours where it can be difficult to see approaching waves as they build to something larger than everything else.
I'm thinking of using multiple LED spot lights like these...
On sale!! Bridgelux 120-130lm 100 watt led flood light (CE&RoSH) products, buy On sale!! Bridgelux 120-130lm 100 watt led flood light (CE&RoSH) products from alibaba.com
A 100W light, through a 120VAC inverter
will need less than 1 amp. An inverter
should run several with no problem.
Best pricing seems to be through Hong Kong
. Comparable lights in the US can cost twice as much, and they come from the same manufacturers. The Alibaba site lists quite a few companies.
Good luck...fair seas.