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Title:THE 'LL' SWEEP FOR MAGNETIC MINES - PART FOUR - OPERATIONS [Allocated Title]
Film Number:ADM 202
Other titles:MAGNETIC MINESWEEPING - THE LL SWEEP [Series Title]
Summary: Naval Instructional Film with graphic sequences illustrating various minesweeping formations.
Description: Multiple sweeps of a single area are made necessary by the use of period delay mechanisms in enemy mines. 'P', 'Q' and 'R' formations are shown in the normal mode and when compensating for a strong cross tide. End of lap turning manoeuvres and the use of danlayers are also described. Procedure for sweeping in narrow waters - the 'L' sweep - and in fresh water - the skid or the 'LAAL' formation. The use of an extra - long (10 second) pulse. The film ends by referring the audience to the relevant 'LL' Handbook', and wishing them all good luck.