Coast Guard Air Station San Francisco rescued four people near Moffett Airfield in Mountain View, Calif., Monday morning.

Coast Guard Sector San Francisco was notified by cellphone from one of four people aboard a vessel that ran aground in the San Francisco Bay. Two women and two men in their late 40s became stranded near South Bay Marsh Island when their engine failed, said Lt. Ian Culver, a pilot assigned to Air Station San Francisco.

The air station launched a helicopter rescue crew to assist the stranded party. The crew found them near high tension power lines and deployed a rescue swimmer to assess the surroundings and the conditions of the people.

The rescue crew then transported the four people to Moffett Airfield where emergency medical services were waiting.

"This case was a success," said Culver. "However, it could have gone differently if the people aboard the vessel didn't have a radio. Because they were fortunate to have cell service, one of the people in distress was able to communicate with our personnel, and we were able to find them quickly. It is important that all boaters, no matter how close to shore they are, have a marine radio. You never know what can go wrong while out on the water."

The rescued people were reported in good condition.

The helicopter crew consisted of pilots Lt. Chris Courtney and Lt. Ian Culver, Aviation Maintenance Technician Petty Officer 2nd Class Travis Swain, and Aviation Survival Technician Petty Officer 3rd Class Corey Fix.