744 Naval Air Squadron is a Naval Air Squadron of the Royal Navy's Fleet Air Arm. It was initially active in 1943, based in Nova Scotia. A second 744 NAS was formed, in early 1944, in Northern Ireland, for Merchant Aircraft Carrier training, meaning the first iteration was re-designated 754 NAS. The squadron's primary focus turned to Anti-submarine warfare training, which then further developed into trialing new submarine detection technology, ending in 1956. In 2018 it reformed as the Mission Systems and Armament Test and Evaluation Squadron.

The Curtiss SO3C Seamew was developed by the Curtiss-Wright Corporation as a replacement for the SOC Seagull as the United States Navy's standard floatplane scout. Curtiss named the SO3C the Seamew but in 1941 the US Navy began calling it by the name Seagull, the same name as the aircraft it replaced, causing some confusion. The British Royal Navy kept the Curtiss name, Seamew, for the SO3Cs that they ordered. One of the US Navy's main design requirements was that the SOC Seagull's replacement had to be able to operate both from ocean vessels with a single center float and from land bases with the float replaced by a wheeled landing gear.