After the exercise Crain's shirt is stained, but when he walks up to Donkeyman and his bird, it is clean.
At 1:58:31 the alcohol in the bottle slants along with the ship instead of staying level.
Trevor Howard (Colonel Statter) refers to India as a "British dominion" but British India was under direct British rule (and the external affairs of the Indian princely states were dictated by Britain) prior to 1947, when British India became a self-governing dominion. India later became a republic, in 1950.
Esther's hairstyle is of the Sixties, not the war years.