Three people were rescued when their 34 foot motorboat was swept onto rocks south of Roedean school yesterday afternoon.
The RNLI Brighton Lifeboat was launched shortly before 3pm after the 8 ton boat ran aground.
An RNLI spokesman said: “Once it was established that all of the crew on board the vessel were safe and well an attempt was made to tow the vessel off of the rocks. Without incident, the lifeboat carefully re-floated the boat and made way into deeper water.
“As a precaution, the casualty vessel was met by the marina workboat who arranged to lift the boat out of the water for closer inspection.
Brighton lifeboat was stood down and returned to station shortly before 4pm.