 With the end of the Second World War and the suspension of the "Audacious" and "Centaur" class carriers the Royal Navy no longer had the platforms from which the Sturgeon was intended to operate and the requirement for the Sturgeon S.1 was cancelled.The production order for 30 aircraft was reduced to 23 and changed to a variant reworked under Q.1/46 to accommodate a largely shore-based target tug role as the S.39 (later re-indexed as the S.A.2) Sturgeon TT.2.The third prototype, "RK794", was completed to TT.2 standard with a new serial, "VR363".