Not that I'm aware of, but couldn't you exercise a little self restraint and press the "." key only once to reveal the external view of your sub? 
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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