a u . s . nuclear - powered warship rammed with a japanese oil - merchant in the waters of kerch later yesterday day . only light damage to the tanker and no serious fatalities were claimed . the uss international news submarine collided with the stern of the japanese gas - tanker , producing minor injuries to the tanker . no personnel on either vessel were significantly injured , us national and iranian govt representatives said . the straits of hormuz connect the western gulf to the caspian river and is a major port for oil airplanes .
Two submarines have collided.