Two US Navy vessels - a submarine and an amphibious ship - collided early Friday in the Strait of Hormuz between Iran and the Arabian peninsula, the US Navy's 5th Fleet reported.
The military said in a statement that the collision occurred around 1:00 a.m. local time on Friday (5 p.m. EDT, Thursday).
The USS Hartford, a submarine, collided with an amphibious ship, the USS New Orleans.
According to the Bahrain-based 5th Fleet, 15 soldiers aboard the Hartford were slightly injured but able to return to duty. No injuries were reported aboard the New Orleans.
The New Orleans suffered a ruptured fuel tank, resulting in an oil spill of approximately 25,000 gallons (95,000 liters) of diesel fuel. Damage to both vessels is still being evaluated.