Originally Posted by Neil Harvey
Not really. the white light is supposed to be 1 metre (min I think) above the port and starboard lights. I can't see why chandlers stock these, orr how comes they are allowed to.
They can sell anything they like... its not like lifejackets which are illegal to sell unless they conform to the relevant CE standard.
this light combination would be ideal for a power driven vessel < 7m LOA not exceeding 7 nm/h which should show an all-round white light and shall, if practicable, also have sidelights. But IIRC there is no height separation suggested in the regs for this application.