This is the fore mast of a historic whaling ship in Ulsan Korea. The nav lights are arrange from top to bottom green, red, green, red. I can’t think on any modern ship that has this arrangement on the fore mast. Can anyone shed some light on the special nav lights historically used by whaling ships?
This ship is the Jinyang 6 on display at the Jangsaengpo Whale Museum in Ulsan.
The Jinyang No. 6, the last whaling ship of Jangsaengpo, was displayed in the square in front of the museum.
Source: 한여름의 하모니, 울산 남구 – KTX매거진
It appear that the lantern on the Craw’s nest is the masthead lantern, while the tree light below is signal lights.
I don’t know whether whalers are classified as “fishing vessels” (Rule 26) or, when they are actively engaged in hunting whales, or towing whale carcases alongside, are classed as “vessels hampered in their manoeuvrability” (Rule 27)?
In any case, this being a restored exhibition vessel on dry land, it is possible that the colour of the signal lights are not authentical.
Here is an active Norwegian whaler, “Kato” (M-92-SØ):
PS: Difficult to see what colour signal light there is in the mast.