Ice Station Zebra (1968, dir. John Sturges)

A US submarine is tasked with a rescue mission to the Arctic, in part as cover for a covert operation. Oddly talky Cold War drama, though with solid technical credits and some fun performances, not least from McGoohan. The relative lack of action is compensated for in part by some great model work and an anti-militaristic angle.

Bear Island (1979, dir. Don Sharp)

An Arctic scientific expedition is used as cover for different factions searching for old U-boat pens and Nazi gold. Great location work and impressive sets, plus a strong cast, enliven this otherwise-talky thriller adapted from an Alastair MacLean novel.