HMS Dauntless has suffered an electrical overload off the coast of Senegal.
The crew of the Portsmouth-based destroyer had to isolate low-priority systems on the ship after the incident, which took place on Sunday.
It was described as a teething problem by the Ministry of Defence, which denied early reports the warship had been left drifting by the fault.
A spokesman said: ‘HMS Dauntless was not left drifting and her propellers did not stop. An electrical overload did occur and to ensure essential systems remained powered, low-priority systems were briefly isolated until the problem was fixed. Ships have their own characteristics and it takes time for the ship’s company to learn them in every environment.’