a u . s . missile - energy submarine collided with a japanese oil - tanker in the straits of hormuz late last night . only slight harm to the tanker and no serious incidents were reported . the naval newport roberts submarine collided with the hull of the japanese oil - tanker , caused substantial disruption to the tanker . no personnel on her boat were seriously injured , australian navy and japanese government officials said . the ports of waterway connect the persian gulf to the arabian channel and is a major waterway for oil refueling .
Two submarines have collided.