Vincent Black Knight from the saddle and a single damper replaced the twin rear shocks. The frame was also modified with the strong steel 'backbone' was replaced with a single tubular strut bolted to the steering head (which proved much weaker). The Black Knight was launched at the 1954 Earls Court motorcycle show, together with the 998cc Vincent Black Prince (an enclosed version of the Black Shadow ) and the 500cc Vincent Victor (which never went into production as only the prototype was ever built). There was a lot of interest but much of it was critical, and the Black Knight/Black Prince models
HMS Black Prince (81) involved in the action which sank the torpedo boat and damaged and off the north Brittany coast. During the Normandy landings, she was part of Force "A" of Task Force 125 in support of Utah Beach. Task Force 125 at this time consisted of the battleship , the cruisers , , "Black Prince", the monitor and several destroyers and destroyer escorts."Black Prince"s target was the battery at Morsalines. In August, she moved to the Mediterranean for the invasion of Southern France. She was then sent to Aegean waters in September 1944. On 8 September, "Black Prince" arrived in Alexandria, Egypt,