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2 THE SUBMARINE TORPEDO BOAT
tached to the hull of an enemy’s vessel by means of a screw
operated from within. After being screwed tot he hu o
the enemy’s vessel, the torpedo was then to be released from
the submarine and fired by a time clock device which was
set in motion by the withdrawing of a pin when releasee.
In 1775 Bushnell was called upon to take his submarine
and make an attack upon the British vessels lying in New
York harbor. Unfortunately for Bushnell, he was too frail
physically to undertake this arduous task in person, so a
corporal from Putnam’s army, Ezra Lee, was chosen am
trained to navigate the craft and to make an attack upon
the British flagship Eagle which was lying off Staten Island
Lee succeeded in navigating the submarine and reached