a u . s . nuclear - powered submarine collided with a japanese oil - merchant in the harbour of straits late last night . only minor loss to the tanker and no fatal incidents were reported . the uss newport news submarine collided with the stern of the iranian coal - liner , causing minor damage to the hull . no personnel on either vessel were significantly wound , us shipbuilding and japanese government officials stated . the sea of shatt connect the iraqi gulf to the arabian strait and is a major channel for international airplanes .
Two submarines have collided.