Please note that these lights are actually unique.
They are legal for a sailing vessel and are based on a separate port and starboard sidelights, with a separate sternlight and the (optional) red and green all round masthead lights.
Sailing Vessel, with optional masthead lights Under Way, bow view
Sailing Vessel, with optional masthead lights Under Way, portside view
Sailing vessel, with optional masthead lights Under Way, stern view