"krj" wrote in message
...
Dave wrote:
LED 3 mile lights turn off during the day and on at night. They take
D-cell batteries that last 1-1/2 months.

http://www.go2marine.com/g2m?action=GoBPage&id=100213F


Dave
This would look like a strobe light. Albeit not a high intensity strobe
light, but a strobe light. Strobe lights are illegal on boats.
krj

Not at all, they are available as a steady burning light. This is my new
anchor light for a boat that spends most of it's time on the hook. I have
not yet tested it's purported 3 mile range but it is much, much brighter
than any other LED light I have used or seen in use. Up close it is as
bright as any 12v navigation light to be found on a small boat. It turns on
by itself at dusk and turns itself off at sunrise. So far I have gotten a
full month out of one set of batteries and it is still going strong. They
come in red and green too. With a 90deg. shield these could be turned into
excellent battery powered running lights.

Dave