USS Wasp (CV-7) - Design

Design

Wasp was a product of the Washington Naval Treaty. After the construction of carriers Yorktown and Enterprise, the U.S. was still permitted 15,000 long tons (15,000 t) to build a carrier.

The Navy sought to squeeze a large air group onto a ship with nearly 25% less displacement than the Yorktown-class. In order to save weight and space, Wasp was constructed with low-power machinery (compare Wasp's 75,000 shp (56,000 kW) machinery with Yorktown's 120,000 shp (89,000 kW), Essex's 150,000 shp (110,000 kW), and the Independence-class' 100,000 shp (75,000 kW)). Additionally, Wasp was launched with almost no armor, although this may have been upgraded after completion. More significantly, Wasp had an almost complete lack of protection from torpedoes. The end result was a ship with major inherent design flaws. These flaws, combined with a relative lack of damage control experience in the early days of the war, were to prove fatal.

Wasp was the first carrier fitted with a deck edge elevator. The elevator consisted of a platform for the front wheels and an outrigger for the tail wheel. The two arms on the sides moved the platform in a half-circle up and down between the flight deck and the hangar deck.

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