(Tape 1) Scenes at the VSEL shipyard (Devonshire Dock) at Barrow-in-Furness, focusing on the Trident missile submarine HMS Vanguard, including detailed sequences of Trident missile being prepared and loaded.
(Tape 2) Further scenes at Devonshire Dock; HMS Vanguard having Trident missiles loaded. Interview with Charge Chief Graham Baines.
(Tape 3) Trident missile arrives at VSEL by low loader; it is lifted off by crane, top plates are removed and the head is attached.
(Tape 4) Scenes at Devonshire Dock, housing HMS Vanguard.