Summary: Dramatised Navy Instructional film in which a new Captain takes command of the Rothesay Class frigate HMS Plymouth (F.126). Touring the ship with the Executive Officer (XO), he is displeased with the level of efficiency and starts pushing to improve performance in all areas of the ship's operation. Against some resistance he applies his conviction that systematic management is key, and the improvement in performance and morale shows when the ship replenishes at sea from the Ranger Class attendant tanker RFA Black Ranger (A.163).