Um - I think the sub is leaking

Not only leaking, but evidently leaking radioactive fluid:

A U.S. Navy submarine leaked trace amounts of radioactive water for two years as it made port calls in Japan and other Asian nations, the Navy said Thursday.
The USS Houston arrives in Pearl Harbor, Hawaii, for routine maintenance, during which the leak was found.

Last week, Navy officials told Japan that the USS Houston, a Los Angeles-class fast attack submarine, had only made one port call -- March 2008 -- while leaking the contaminated fluid.

Source: CNN

Oh. Well. I'm sure the Japanese will understand.