On Mon, 07 Jan 2008 15:52:19 -0500, Wayne.B
wrote:

On Mon, 07 Jan 2008 19:51:30 GMT, Short Wave Sportfishing
wrote:

The rules haven't changed.

Sailing vessels under way, less than 20 meters, can carry a
combination red/green/stern light at the masthead.

And under power you are required to have conventional deck level
lights if my memory is correct, in addition to a steaming light on the
front of the mast, and a stern light aft.

Rule 25 only describes a sailing vessel underway not motive power. The
only distinction related to motive power is that while under power,
the inverted cone shape must be displayed on the forestay.

The distinction, as I read it, says that under 20 meters, it's an
either/or - side/stern markers on the hull or combined on the
masthead.