A Dockwise heavy lift vessel transporting the damaged US destroyer USS John S McCain has run into heavy weather en-route to Japan.

The 53,818-dwt Treasure (built 1990) was heading for Yokosuka, but has run into Typhoon Lan forcing it to change destination.

It has also emerged that the John S McCain has also developed a 4-inch crack in its hull, reports military publication US Naval Institute (USNI).