Mark 3 had an additional midsection that gave it a length of and a displacement of 640 tons. Even with this extra weight, the vessel was slightly faster than the Mark 1.<unk> Even with this extra weight, the vessel was slightly faster than the Mark 1. Mk.3 was accepted on 8 April 1941. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ When tested in early assault operations, like the ill-fated Allied raid on Dieppe
1942, the lack of maneuverability led to the preference for a shorter overall length in future variants, most of which were built in the United States.