If you are at sea or on a lake, this will be a much tougher assignment. If you are docked, then you can 1)draw ac power from the dock and / or a generator placed far enough away to be quiet and b)have less shifting light to worry about though the sun will change directions throughout the day.
Assuming you are docked, you can:
--push more daylight through the portholes by using reflectors (assuming it's a sunny day -- otherwise you can use 1200 HMIs bounced into reflectors for a similar effect); you may want to put trace or other diffusion on the outside face of the portholes to create a soft key. In this case, you could put the 1200 HMIs directly through the portholes, though rigging them at the right angle will be a challenge. Be sure you have at least one good rigging grip on your crew. If using just reflectors, you may want one or more mirror reflectors to direct the sunlight into the soft side of standard reflectors placed just outside the portholes. Better to use lights than reflectors, if your budget and AC permits, since the sun shifts so much you will be forever chasing it with your shiny boards.
--bounce light into white foamcore taped to the ceiling -- again, 1200 HMIs probably your best bet
--add additional side key with LEDs if you can find them, otherwise more bounce.
--the problem could be that you end up with a too-flat look. Start turning off lights until you get the balance you like.
--keep everyone out of the shooting area not absolutely essential to the job -- keep talent out while lighting, then crew and clients out while shooting; put video village above deck or in an adjacent room if there is one. It's going to be a tight fit for everyone. Remember to bring patience and good cheer.
Rick Wise
director of photography
Oakland, CA
http://www.RickWiseDP.com
email: Rick@RickWiseDP.com
