Originally Posted by Stoo
Over hear, Coasties and Police boats use blue strobes when they're on calls.
Oddly, so do snowplows!
Damn; must be cold up there if you have to plow the channel...
Yellow flashing lights are used by subs on the surface, as I recall. something like 3 short, pause, 3 short.
If you are looking for a distress marker light, why not simply go with a white strobe? It is, as I recall, a somewhat standard (if rarely used) distress signal anyway; will be readily identifiable (even in a crowd), and will not be confused with the odd boomer or hovercraft.