> Date: Sun, 12 Oct 2008 11:33:27 -0400
> From: "'bella"
> Subject: Re: [Liveaboard] led masthead lights..
> and you got that definition where?
>
> *Term:* masthead (n) *Definition:* The top of the mast.
>
> *Term:* masthead light (n) *Definition:* A navigation light mounted high
> in the rigging near or on the masthead. *See Also:* masthead
In most of the world, the 120 degree, forward-facing white light
American sailors often call a steaming light is indeed called a
masthead light. Interestingly, it is labeled as such on my (European)
electrical panel. The lights at the top of the mast (indeed the
masthead on a sailboat) are the anchor light and (if fitted) tri-color
(optionally replacing the sidelights and stern light when under sail).
Note that on power-driven boats, yachts, and ships the
masthead/steaming light is indeed at or very near ("high in the
rigging") the top of masts fitted for the express purpose of
supporting navigational lights. Their current use as a platform for
radar and communications antenna came long after.
The term "high in the rigging" allows the installation of a
masthead/steaming light 2/3 of the way up the mast on a sailboat,
preserving the valuable real estate at the top of the mast for items
that truly do require 360 degree visibility.
If you check the COLREGS (72 COLREGS Part C Rule 23) you will find the
requirements written in a way that addresses both power craft and
sailboats under power (a distinction the COLREGS quite properly don't
make, so that a power boat is a power boat, even if it happens to have
a mast and sails).
sail fast, dave
S/V Auspicious
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