Turtle carried on her back a hollowed oak powder magazine that was attached by a rope to a sharp iron auger; Lee was to screw the auger into the frigate’s keel, using a handle above his head near the hatch. He would then set the timing mechanism, made for Bushnell by a watchmaker and connected to a gunlock trigger, to detonate the powder in an hour. After jettisoning the magazine—still tied to the auger embedded in Eagle’s hull—he would make his escape. But there would be no blast, no shattered ship tossed from the sea like a hogshead of rocks. The auger would not bite; by mischance, Lee was
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