OBXTucker, if you really got that light and you need some info, you can contact Flashpilot of budgetlightforums. He has a VSS-3 (that most advanced one, with 150 million cp) on his 35 foot leisure cruiser. It was quite a lot of money to get it to work, with the genset and AGM batteries and wiring. The folks to ask are really those vintage tank collectors in various forums. He can guide you to them.
Not sure if you have considered formally the marine searchlights of the metal halide variety. I have asked a few and $3k (before discount, definitely negotiate) gets you a basic but good marine capable 12" 575W metal halide (well over 10 mil cp and over 3km range @ 1lux) working unit that can easily interface with support and parts available, installation excluded. Well you can have > 100 million cp and 12km range if you have the cash, but unless you are mounting a good 50 metres up there in a large craft or you have a very fast craft and this is used for night fast navigation, i don't think there is much use, unless if it's just for fun. Though the tank lights are extremely robust and engineered to a level for environments that are more extreme than marine, I'm more worried about sinking in a few grand, have a working light for 6 months, and then not having any spare parts after that.
Some of them even have EMARCs available in a small package and doing over 10 mil cp, so pretty cool...but i think definitely not cheap.
Or maybe such tank projects are significantly cheaper? I don't know....