Submarines

Essay specific features

 

Issue:

History

 

Written by:

Chris K

 

Date added:

July 7, 2016

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 306

 

Was viewed:

1550 times

 

Rating of current essay:

 
Essay content:

Lead ballast kept the craft upright and it was propelled by hand-operated screw-like devices. The submarine was submerged when a valve admitted sea-water into a ballast tank, and rose when the tank was emptied by a hand pump. The armament of the ship included a single gunpowder bomb with a time-fuse...
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One of the key setbacks to this innovation to warfare was it's lack of an onboard oxygen supply. Lacking this, "Bushnell's Turtle" could only remain submerged for a half hour. The reason that this type of machine was developed was because Americans were looking for a way to ambush English ships. Unfortunately though, Bushnell's Turtle was a failure in it's own right...
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