SHIPBORNE TORPEDO WEAPON SYSTEM MK. 1 [Main Title]
Navy Instructional film explaining the principles of the Shipborne Torpedo Weapon System Mark 1, including differences between the Mark 44 and 46 torpedoes and the technicalities of weapon arcs. The film also uses example engagements to demonstrate the procedure for the engagement of an enemy submarine, including every individual action and button push necessary in the ship's operations room. The tubes themselves and the launching mechanism are described, as are procedures for the emergency jettison of torpedoes. Set onboard the type 42 destroyer HMS Birmingham D.86).