Largest sailing ship - The Sedov is the largest measuring 385 1/2 ft in length. She was launched in 1921 and used for training in the USSR with a full crew of 65 and 120 officer trainees. She is 48 ft in width and has a sail area of 45,123 ft2. (Photo: Gamma/Caoudal)Largest sailing ship - The Sedov is the largest measuring 385 1/2 ft in length. She was launched in 1921 and used for training in the USSR with a full crew of 65 and 120 officer trainees. She is 48 ft in width and has a sail area of 45,123 ft2. (Photo: Gamma/Caoudal)