About: Sherman DD   Sponge Permalink

An Entity of Type : dbkwik:resource/NQ1gCY8duv0v2JGPyBThsA==, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The development of this tank started in 1941 when a Tetrarch light tank had a Canvas screen fitted to the outside of the tank. This screen was made from waterproof Canvas and could be raised and lowers from inside the tank by the crew using a air pump and an inflatable rubber frame.The addition of the screen acting as a hull, increased the tanks freeboard, the distance between the water level and the top of the hull, allowing it to float. Around 460 Vickers Valentine were also converted to DD tanks before the decision was made to use the Sherman instead. This was partly due to the US armies unwillingness to use British due to training issues, and partly due to the Sherman being able to point its turret forward when the screen was up.This meant the tank was ready to fire as soon as it lande

AttributesValues
rdf:type
rdfs:label
  • Sherman DD
rdfs:comment
  • The development of this tank started in 1941 when a Tetrarch light tank had a Canvas screen fitted to the outside of the tank. This screen was made from waterproof Canvas and could be raised and lowers from inside the tank by the crew using a air pump and an inflatable rubber frame.The addition of the screen acting as a hull, increased the tanks freeboard, the distance between the water level and the top of the hull, allowing it to float. Around 460 Vickers Valentine were also converted to DD tanks before the decision was made to use the Sherman instead. This was partly due to the US armies unwillingness to use British due to training issues, and partly due to the Sherman being able to point its turret forward when the screen was up.This meant the tank was ready to fire as soon as it lande
dcterms:subject
dbkwik:world-war-2...iPageUsesTemplate
Caption
  • A DD Sherman with its waterproof screen lowered
abstract
  • The development of this tank started in 1941 when a Tetrarch light tank had a Canvas screen fitted to the outside of the tank. This screen was made from waterproof Canvas and could be raised and lowers from inside the tank by the crew using a air pump and an inflatable rubber frame.The addition of the screen acting as a hull, increased the tanks freeboard, the distance between the water level and the top of the hull, allowing it to float. Around 460 Vickers Valentine were also converted to DD tanks before the decision was made to use the Sherman instead. This was partly due to the US armies unwillingness to use British due to training issues, and partly due to the Sherman being able to point its turret forward when the screen was up.This meant the tank was ready to fire as soon as it landed. The alterations to the tank didn't just end the addition of a waterproof screen. Two duel propellers were also added to the back of the tank giving it its name the duplex drive. Tests were conducted at Bret reservoir and later in Portsmouth harbor. These tests took part very calm conditions a factor that would prove a serious problem on D-Day.
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