The all weather lifeboat was launched to a yacht calling mayday.

The yacht was originally reported as being six miles south west of Shoreham but when the lifeboat crew arrived at that position, she was not in sight.

The boat with one person on board was eventually found drifting 12 miles south west of Shoreham with broken rigging and mechanical failure.

She was taken under tow by the lifeboat that took her into the harbour and through the lock gates.