HMS Dalrymple was a Bay-class anti-aircraft frigate of the British Royal Navy, which served as a survey ship, mostly in the Persian Gulf, from 1948 until 1965.

She was completed to deal with the large numbers of uncharted wrecks and mines around the British Isles as a result of World War II.

[1][2] The ship was originally ordered from William Pickersgill & Sons Ltd. of Southwick, Sunderland, on 25 January 1943 as the Loch-class frigate Loch Glass.

She spent much of her career in the Persian Gulf, often with sister ship Owen, as well as carrying our extensive surveys of the Grand Harbour at Valletta, the Malta Channel and the Strait of Sicily.

[1] In 1957 Dalrymple operated off the West Coast of Scotland, carrying out trials of a new radio-location system, before being extensively refitted, with improved radar, working spaces, messing and crew accommodation.