Well......
If you mean an iluminated surface on the ground/sea, I know of none I'm affraid. A2A 3DLights are nice but do not have a direct down vertical effect, they do come in slightly, 22 and 45 degree down flavours though. These are perfect for helo's, but are cosmetic and do not illuminate the ground. If one was looking for a vertical one and you had 3DLights, i just don't know :d
Jamie