Huge Ship Light

Professional Mariner Forum
1

We are in the process of comissioning the nav systems on our ship and noticed a flashing green light on the mast. It’s labled “Huge Ship Light”.

Does anyone know anything about this light?

2

[quote=john;27011]We are in the process of comissioning the nav systems on our ship and noticed a flashing green light on the mast. It’s labled “Huge Ship Light”.

Does anyone know anything about this light?[/quote]

In Japanese waters ships over 200 meters are considered “huge ships” and must display the flashing green light.

3

I’ve been in there lots, but never on a “hugh” vessel…

The Japan Maritime Traffic Safety Law became effective as of 1 July 1973. This law applies to all ships transiting the sea areas of Tokyo Wan.

The following major points of the law are outlined for information:
[ol]
[li]Identity of sea areas and traffic lanes affected: Uraga Suido Traffic Route and Naka-no-Se Traffic Route in Tokyo Wan.[/li][li]Classification of vessels and special rules. It is required that the Maritime Safety Agency (MSA) be notified no later than 72 hours prior to the transit for any of the following vessels transiting the traffic route:[/li][ul]
[li][B]Huge Vessels: All ships over 656 ft (200 m) or more in length. Additionally, these vessels will display at night an all around green light flashing at frequencies of 180 times per minute in addition to standard running lights and by day, two black cylindrical shapes (2 by 3.9 ft (0.6 by 1.2 m) or greater) placed vertically while transiting the traffic route. [/B][/li][li]Vessels of 10,000 gross tons or greater.[/li][li]Vessels towing or pushing objects if distance between bow of towing vessels and stern of towed object or distance between stern of pushing vessel and bow of object is 656 ft (200 m) or greater.[/li][/ul]
[/ol]

4

I said ships over 200 meters, ships 200 meters or more is correct. My ship is 199.94 meters

5

Where might I find the reg for the quick flashing [B]red[/B] light being displayed on anchored or moored tank vessels (specifically on the East Coast USA).

6

learn something new every day…

thanks guys.