SS Melmore was a passenger cargo vessel operated by the Great Western Railway from 1905 to 1912.

She was built for Robert Bermingham Clements, 4th Earl of Leitrim, intended to run between Glasgow, Portrush, Derry and Milford.

They kept her until 1905[6] when she was then sold to the Great Western Railway, and employed on cargo services between Weymouth and the Channel Islands, and also on the route from Plymouth to Nantes.

In 1912 she was sold to Charles Forbes who intended to use her for a treasure seeking expedition in Cocos Island[7] Mrs Barry Till and Miss Genevieve Davis visited Cocos Island in 1911 and convinced themselves they had discovered a cave containing part of the treasure hidden by either Tom Tiddler or Benito Bonito.

Lastly she was sold to the Ministry of Marine in Peru in 1936 as a lighthouse tender and named Condestable Celendon.