Originally Posted by svzephyr44
Actually it has to do with COLREGS. Rule 21 defines "masthead light" which, wow, has to be on the masthead. ...
Actually, NO. This is the definition:
"(a) “Masthead light” means a white light placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the vessel." No mention of height.
On every sailboat that I have seen, this light is located halfway up the front of the mast. That is why I advise calling this light as the "steaming light" so as to not confuse the typical boater who thinks that the light at the top of the mast, is the masthead light, which it is not, the light at the top of the mast is the anchor light.