NationStates Jolt Archive


Introducing the 3"/50 cal. Irondeck

Greston
27-06-2007, 19:47
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We are proud to announce the opening of a new military supply company, the Irondeck Naval Corp. The first piece of INC technology is the 3"/50 cal. Irondeck deck gun. The 3"/50 cal. Irondeck is a semiautomatic dual purpose anti-aircraft and surface target weapon for a variety of combatant and transport ship classes with a power driven automatic loader that fired a fixed AA or HC round consisting of a projectile and a cartridge case crimped to the projectile. The average weight of the round was 34 pounds. The projectiles weighed about 13 pounds including a burster charge of 0.81 pounds for the AA round and 1.27 pounds for the HC round. The initial velocity of the round was 2,700 feet/second with a maximum range of 13,100 yards at 45 degrees elevation and a ceiling of 27,300 feet at 85 degrees elevation. The gun could fire at a rate of 50 rounds/minute.

The 3" guns are fitted to both single and twin mountings. Although intended as a one-for-one replacement for the 40 mm. mounts, the final version of the new 3-inch mounts was heavier than expected, and on most ships the mounts could be replaced only on a two-for-three basis. The mounts are of the dual purpose, open-base-ring type. The right and left gun assemblies were identical in the twin mounts. The mounts use a common power drive that could train at a rate of 30 degrees/second and elevate from 15 degrees to 85 degrees at a rate of 24 degrees/second.

The gun is used in single or dual open mounts, designed to replace dual and quad 40 mm antiaircraft guns, respectively. It can fire a 13-pound projectile 14,600 yards in a surface role, and to 29,800 feet as an antiaircraft gun. The rate of fire is about 20 rounds per minute per barrel, which is good against slower planes, but not effective against faster ones such as jets.


Type: Deck Gun
Manufacturer: Irondeck Naval Corp.
Place of origin: The Republic of Greston
Used by: Greston Navy
Weight: 7,500 lb
Legnth: 20.73 m (breech face to muzzle)
Bore length: 20.32m
Crew: 7
Shell: AA,AP,Illumination
Caliber: 50
Elevation: -15 to 90 degrees
Rate of fire 20 rpm
Muzzle velocity: 2,800 ft/s
Maximum range: 14,600 yds
Sights: Peep-sight and Optical telescope
Anti-aircraft price: 700,000 USD
Regular naval use price 500,000 USD
Production Rights: Not for Sale