At 2 p.m. on 20th May, 1970, it was learnt that a yacht in Moelfre sound was unable to make headway against the wind and tide. The IRB was launched at 2.10 in a strong south westerly wind with a rough sea.

It was three hours after high water.

She came up with the Last Scrap, a Silhouette class yacht with an auxiliary outboard motor, ashore on Moelfre island. She was carrying a crew of two. As her position was becoming critical and the IRB was not powerful enough to effect a tow, the life-boat Watkin Williams was launched at 2.28. She reached the position 10 minutes later. In the meantime the IRB had given assistance.

Then the life-boat towed the yacht off the rocks to the safety of the beach at Traeth Bychan. The lifeboat and the IRB returned to their station at 4 o'clock..