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[camay2327]

Airfield Under the sea‏. Down load this and read it. Very interesting.

http://rmhh.co.uk/fi...ne_carriers.pdf

JAPAN’S SUBMERSIBLE I-400 AIRCRAFT CARRIERS

In many ways HIJMS I-400 was decades ahead of her time. She was the world’s largest
submarine with a length of 400-ft and a surface displacement of 3,530 tons. Above her main
deck rose a 115-ft. long, 12-ft diameter, hangar housing three torpedo-bombers. These float
planes were rolled out through a massive hydraulic
door onto an 85-ft pneumatic catapult, where they
were rigged for flight, fuelled, armed, launched,
and after landing alongside, lifted back aboard
with a powerful hydraulic crane. The I-400 was
equipped with a snorkel, radar, radar detectors,
and capacious fuel tanks that gave her a range of
37,500 miles: One and a half times around the
world. She was armed with eight torpedo tubes, a
5.5-in 50-cal deck gun, a bridge 25mm antiaircraft
gun, and three triple 25 mm A/A mounts atop her
hangar. The advent of guided missiles and atomic
bombs transformed her from dinosaur to an
overspecialised undersea menacing strategic
threat.