The Supermarine Seafang F Mk.32 is a navalised version of the Supermarine Spiteful. The original design had included a contra-rotating propeller, but the production models used a five bladed prop. The failure of the Spiteful did not deter the Royal Navy from wanting to pursue the project. Although the Spiteful was cancelled and eventually abandoned the Navy ordered two prototypes for testing and evaluation in March 1945. The Navy requirement was for modifications of folding wings, arrestor hook and contra-rotating propellers to counteract the torque. In the meantime, an interim type Seafang Mk.31 was ordered in May 1945, VG474, which was basically a Spiteful with an arrestor hook added. 150 were to be built but only 9 were completed before the war ended which removed the urgency for an interim so the order was cancelled. The F Mk.32 could be developed without rush.

The Seafang was identical to the Spiteful in appearance apart from the obvious difference in propellers and the arrestor hook on the tail. It was slower than the Spiteful but retained the larger tail section. Seafangs were armed with four Hispano Mk.V 30mm cannon and had hard points to carry either 2 x 1,000lb bombs or 4 x 60lb RP-3 rockets.

In June 1946 the first prototype F Mk.32, VB895, flew with a Griffon 89 powerplant giving 2,350hp and 2 x three bladed contra-rotating propellers. In May 1947 the same aircraft was used for deck trials on HMS Illustrious. However, its performance was no better than the recent Seafire Mk.47 and the low-speed characteristics were not good. The Hawker Sea Fury, which was developed at roughly the same time, was much preferred as the next FAA fighter. Anticipation of the new navalised Meteor and Vampire jets was also a factor in the decision to cancel the Seafang with only two prototypes having been completed. None survived.

VG474 went on to be a development aircraft for the Supermarine Attacker.