 MI6 tried to cover up this espionage mission.On 29 April, under instructions from Rear Admiral John Inglis, the Director of Naval Intelligence, the Admiralty announced that Crabb had vanished when he had taken part in trials of secret underwater apparatus in Stokes Bay on the Solent.The Soviets answered by releasing a statement stating that the crew of "Ordzhonikidze" had seen a frogman near the cruiser on 19 April.