HMS Blanche (H47) was a British destroyer, the keel of which was laid in July 1929, launched in May 1930, and entered service with the Royal Navy in 1931. The total length of the ship at the time of launching was 98.5 m, width 9.8 m, with a standard displacement of about 1,380 tons. In turn, the maximum speed was up to 35 knots. At the time of the launch, the ship was armed with: 4 single 120mm Mark IX guns, 2 single 40mm AA guns, 8 533mm torpedo tubes and up to 20 depth charges.
HMS Blanche (H47) was one of nine B class destroyers. The design of this type of destroyer was a slight modification of the A-class design, which in turn was derived from the experience gained from the operation of HMS Amazon and HMS Ambuscade. Compared to the latter two, the B-class ships were smaller and significantly cheaper to build. At the same time, they were slightly better equipped and had a further swimming range. They also had significantly improved ZOP (anti-submarine anti-submarine) capabilities, which was expressed through: sonar assembly and the ability to take a much larger number of depth charges. However, they did not have the possibility of trawling a given area from min. HMS Blanche (H47), almost immediately after entering service, operated in the Mediterranean basin until 1936, and later joined the Home Fleet. However, shortly thereafter, he was sent to the waters surrounding Spain for patrol purposes in connection with the civil war there (1936-1939). HMS Blanche (H47) sank on November 13, 1939 as a result of an attack on a sea mine.