The collision between USS Porter (DDG 78) and the Panamanian-flagged bulk oil tanker M/V Otowasan occurred at approximately 1:00 a.m. local time.
Overall damage to Porter is being evaluated, but the ship is able to operate under its own power.
No personnel on either vessel were injured.
The incident is under investigation. The collision was not combat related.
USS Porter is on a scheduled deployment to the U.S. 5th Fleet area of responsibility conducting maritime security operations and theater security cooperation efforts.