At the stern, whereas the Snaefell had rails and mesh, Mona's Isle had solid bulwarks.

On 8 June 1955, she went aground off Fleetwood after a collision with the Ludo, a small fishing vessel.

One man, Francis Stewart, was lost from the Ludo which was cut in half and sank almost immediately.

On 15 February 1964, she went aground at Peel and severely damaged her stern resulting in her having to be towed to Birkenhead for repairs.

[3] The 1980 season was her last, although she did appear in the film Chariots of Fire[2] and took the 150th anniversary cruise around the Island.