M.33 is one of only three British First World War warships to survive.
She saw action in the Mediterranean between 1915 and 1918, supporting troop landings and evacuations at Gallipoli in 1915. In 1919, she played a part in the Russian Civil War covering the withdrawal of Allied and White Russian troops. Following her return from Russia, she spent the rest of her active life in Portsmouth Harbour.
Today she is berthed near the new Mary Rose Museum and Nelson's flagship, HMS Victory, in Portsmouth’s Historic Dockyard. Her national and historical significance has been recognised and she features in the National Register of Historic Ships.
Hampshire County Council’s Museums Service acquired her in 1990 to preserve her for the county and the nation and is currently working in partnership with the National Museum of the Royal Navy to complete her conservation and enable full public access.
A grant of £1.8 million was been awarded by the Heritage Lottery Fund to support this work with additional financial support coming from Hampshire County Council and fundraising by the National Museum of the Royal Navy. The vessel is well on the way to becoming another highly popular public attraction at Portsmouth's Historic Dockyard.