Learning the HARD way...
Join Date: Jan 2007
Location: Boston / Ft Myers Area
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Per The Annapolis Book of Seamanship
"The masthead (steaming, bow) light, which when lit indicates that the boat is under power, is a white light located not at the top of the mast, as the name suggests, but partway down. (On small power vessels it may be placed at the top of a short vertical spar). On most sailboats it's about a third of the way down from the actual masthead. Showing over the same arc as the sidelights, it is turned on only when the boat is under power. "
The rule that I remember is that it must be "signifigantly" above the sidelights.
At the club that I sail with, the guy that owns the (50+) boats has started to move some of the steaming lights DOWN on the mast, so that he can replace them without having to climb the mast, or get a ladder.
Last edited by eherlihy; 09-20-2013 at 10:58 AM.