[3] 737 Naval Air Squadron moved to RNAS Arbroath (HMS Condor), Angus, Scotland, on 28 August 1944, with its Fairy Swordfish and Avro Anson aircraft.

[3] 737 Naval Air Squadron reformed at RNAS Eglinton (HMS Gannet), County Londonderry, Northern Ireland, on 30 March 1949.

[9] It provided Part II of the Operational Flying School Course and training included air weapon use, basic anti-submarine warfare and deck landing.

Also that same month, an ‘X’ Flight was formed at RNAS Lee-on-Solent (HMS Daedalus), Hampshire, England, for trials with search receivers to detect submarine radar.

[10] It moved to RNAS Eglinton in June 1951, [5] and during the month of July in 1951 the ‘X’ Flight was involved in a trial around the suitability of the British Radio Directional Sonobuoy Mk 1 for Fleet Air Arm aircraft.

[3] 737 Naval Air Squadron reformed again on 28 August 1959 at RNAS Portland (HMS Osprey), Portland, as the Royal Navy Anti-Submarine Warfare School acquiring Westland Whirlwind HAR.3, a British licence-built version of the United States Sikorsky H-19 Chickasaw, from the remains of 815 Naval Air Squadron which disbanded.

[6] A couple of Westland Whirlwind HAS.22 were added to strength in February 1960, whilst an anti-submarine variant these being used for search and rescue duties until July 1961, when they were transferred to a reformed 771 Naval Air Squadron.

They could also be fitted with a door-mounted Machine gun and act as a self-contained unit, handling all operations of Anti-submarine warfare(ASW).

[citation needed] Throughout the late 1970s most of the Wessex HAS.3 helicopters at RNAS Portland were being replaced by Westland Sea Kings, which could carry more torpedoes or depth charges and had the security of twin engines, with greatly extended endurance.

Her helicopter, Westland Wessex HAS.3 XP142, nicknamed Humphrey, was responsible for the rescue of 16 SAS men from Fortuna Glacier and the subsequent detection and disabling of the Argentine submarine Santa Fe.