I don't know whether the Ham Stone is an island or just a lump of rock, but it's a possibility.
Soar Mill Cove
The coastal path heads west to Soar Mill Cove, a sheltered cove of sand and rock pools. In 1887, the ‘Halloween’, a sailing clipper laden with tea, was driven ashore and the crew were rescued by the lifeboat after they had spent the night clinging to the rigging. When the ship broke up, a three metre-high wall of tea washed onto the beach. The ‘Lintor Ken’, laden with walnut wood and marble was also wrecked here and the marble still lies at the bottom of the sea.
As you look out towards the Ham Stone, the two ragged rocks to the right are known as the Priest and Clerk; the names are connected with the practice of sermons being delivered on the beach.