I have the open hatch mod and shift + H and ctrl + H open and close the hatch between the control room and the radio room. It might be the same in the New Interior mod.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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