The mate never moved a muscle.
"That awful fore-cabin, sir!" he said. "It's in there, and Broomberg, the Finlander, declares that if you don't land him and his mates at Bergen they'll seize the ship and sail for Aberdeen."
"But why on earth don't you open the fore-cabin?"
"Oh, that's where it is, sir! The key is lost, or else the professor has it."
Gordon Stables: Crusoes of the Frozen North