[2][3] Today, little evidence of the RAF base remains apart from several memorials, some aviation-related road names, the main slipway and two impressive Grade II listed F-type aeroplane hangars dating from 1917.

It had a hangar for aircraft, storage and maintenance and a stone pier with a railway track that enabled a steam crane to place the seaplanes in and out of the water.

On 1 October 1928, following re-building, the old Cattewater seaplane station was opened as RAF Mount Batten to provide a base for flying boats to defend south-west England.

238 MU, Calshot until the marine branch closed in 1986 and the School of Survival until it moved to RAF St Mawgan in 1992.

3 Maritime Headquarters Unit of the Royal Auxiliary Air Force providing Communications and Operations Room personnel.