cachalot

Trivia: When the destroyer is bombed next to the mole, the shots of it sinking are of the corvette Compass Rose from The Cruel Sea.

cachalot

Trivia: When Richard Hannay is hanging on the minute hand and you get shots of the clock gears bouncing about, they appear to be car gearbox internals. There is definitely an BMC A-series differential in there.

cachalot