Aye the Oak was seaworthy but deemed too slow to keep up with the rest of the fleet
Luftwaffe ariel shots had shown the bulk of the home fleet in Scapa before U 47 got her orders
Unfortunately the fleet had sailed in response to a German ploy to bring them out
The Oak was left behind and the fleet docked at Loch Ewe leaving the old Oak as the only major target left in Scapa by the time Prien got there
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