a u . s . nuclear - powered destroyer collided with a japanese air - carrier in the south of hormuz later one dawn . only significant damage to the tanker and no serious injuries were report . the uss newport times submarine collided with the stern of the japanese oil - tanker , causing minor impact to the tanker . no employees on either frigate were seriously injured , us navy and japanese government officials said . the straits of straits linked the persian channel to the arabian sea and is a major waterway for oil tankers .
Two submarines have collided.