Hiyo
Junyo
Nisshin
Shokaku
Shokaku W of Marianas damaged Jun.19/44 by torpedoes fired by US sub Cavalla blew up due to fuel vapors
Last "Banzai" onboard sinking ZUIKAKU (25/10/44)
The Bofors 40mm gun originated as a German Krupp design in 1918. The WW 2 40mm was manufactured by the Bofors Company in Sweden which, quite literally hand built and fitted each weapon. Mass production techniques were not used by Bofors. When the United States bought the rights to manufacture the 40mm, we did employ mass production techniques which allowed us to produce the 40mm by the thousands. The British produced the Mark 1 single barrel and the Mark II double barrel. The United States produced single, double and quad mounts of the 40mm and supplied them to all our allies.
The 40mm was the Navy's standard intermediate range anti-aircraft weapon throughout WW 2, the Mk IV quad mount being extremely effective. The 40mm was used post-war until fast-moving jet aircraft became commonplace.
Crew on the USS Hornet (CV12) firing their quad-40mm gun. The loaded "ready racks" are clearly visible. The gun crews are feeding the guns so quickly their hands are slightly blurred.
Quadruple 40mm in action