The US Coast Guard plans to use explosives to sink a derelict Japanese ship dislodged by last year's massive tsunami.

The shrimping vessel is floating about 195 miles (313 kilometers) south of Sitka in the Gulf of Alaska. It's traveling about 1 mile (1.6 kilometers) per hour.

The ship holds more than 2,000 gallons (7,570 liters) of diesel fuel, and authorities are concerned it could interfere with the course of other vessels.

A Coast Guard cutter was headed out to the ship on Thursday with plans to use high-explosive rounds to sink the vessel, named Ryou-Un Maru.