The U.S. Navy says two of its vessels have collided in the Strait of Hormuz, between Iran and the Arabian peninsula.
The Navy's 5th Fleet says the two vessels - a submarine and an amphibious ship - collided early Friday.
The Navy says the amphibious ship USS New Orleans ruptured a fuel tank, and 95,000 liters of diesel fuel spilled into the water. It says overall damage to both vessels is being evaluated.
Fifteen sailors aboard the submarine, USS Hartford, were slightly injured.
Some information for this report was provided by AFP and AP.