A crew member aboard the ferry San Francisco notified USCG Sector San Francisco watchstanders of the allision around 2:40 p.m.  The cause of the incident is under investigation.

The purpose of the Coast Guard's marine investigations is to ensure we understand the cause of the allision and are able to recommend measures that can prevent future incidents. Our primary concern in any investigation is safety of passengers and the environment,

... said Lt. Cmdr. Krysia Pohl, Coast Guard Sector San Francisco's Inspections Division branch chief.

Results will be public once the investigation is finalized.