An advertisement for 'Senior Service' cigarettes featuring underwater frogmen of the Special Boat Service.
START 00:00:00 Pre-title caption: "The following film won the first prize in the Series category at the Advertising Film Festival at Cannes, Sept. 1956." followed by main titles.
00:00:12 Scenes on board a Royal Navy Vosper fast patrol boat P8044, with three Special Boat Service (SBS) frogmen on board. To prevent damage to their equipment, their method of entering the water from the boat whilst it is travelling at high speed consists of leaping onto a rubber raft tethered to the craft and rolling sideways into the sea.
00:00:45 Wearing protective rubber suits, air tanks and flippers, the three frogmen begin their underwater mission - "The effectiveness of this underwater operation lies in its silence and secrecy." Their objective, an 'enemy' warship, is illustrated with stock shots showing the entrance to Valletta harbour on Malta (with the Royal Yacht Britannia visible in the background) and a flotilla of Algerine Class minesweepers moored in a Mediterranean port. They swim under water to their target (illustrated here by the Vosper patrol boat itself) and place limpet mines on its rudders. Such operations usually take place at night.
00:01:33 Afterwards they are picked up at high speed by the patrol boat. The method consists of a naval rating sitting in the rubber raft alongside the Vosper's hull lowering a large rubber ring into the water that the frogmen grab and use to haul themselves onboard - "Seals have nothing on these frogmen!". Afterwards, safely back on board the patrol boat, all three SBS frogmen share a packet of 'Senior Service' cigarettes - "There's a good hot cuppa waiting and time to enjoy a well-earned cigarette. A really satisfying cigarette too. Senior Service - tobacco at its best!"