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20.3 cm/45 Type 41 naval gun

World War II Japanese naval gun

Field	Value
name	Type 41 203 mm 45 caliber naval gun
image	Takasago 8 inch gun centre pivot right elevation.jpg
caption	Right elevation diagram of an 8-inch center pivot mounting for Japanese cruiser Takasago.
origin	Japan
type	Naval gun
Coastal artillery
is_artillery	yes
is_ranged	yes
service	1908–1945
used_by
wars	World War I
World War II
designer	Elswick Ordnance Company
weight	18.75 –
length	9.487 m
part_length	9.114 m bore
caliber	203 mm
action	Manual
rate	2 rpm
velocity	760 m/s
range	18000 m at +30°
breech	Single motion interrupted screw
elevation	-5° to +30°
traverse	+/- 150°

Coastal artillery World War II The ** 20.3 cm/45 Type 41 naval gun** was a Japanese naval and coast-defense gun used on cruisers of the Imperial Japanese Navy from the Russo-Japanese War through the end of World War II.

Design and development

The 20.3 cm/45 Type 41 naval gun was a designation applied to existing foreign produced EOC 8 inch 45 caliber Pattern S, U, W guns which had been produced by Armstrong of Great Britain and Ansaldo of Italy and a license-produced Japanese variant. Licensed production of Japanese guns based on Pattern S drawings began in 1902 and in 1908 a modified version with a different rifling pattern and a resized propellant chamber was produced. Ships produced before 1902 in foreign shipyards most likely had Pattern S, U, W guns. While ships produced or refit after 1902 in Japanese shipyards most likely have Japanese-built guns. These weapons were officially designated as Type 41 on 25 December 1908, and re-designated again on 5 October 1917 in centimeters.

The first ship armed with these guns was the protected cruiser completed in 1898 by Armstrong and armed with Pattern S guns. The last ships armed with these guns were probably the Ibuki-class armored cruisers built between 1905 and 1911. This series of guns also armed the armored cruisers , , , , , , and . Many of these ships were disarmed under the conditions of the Washington Naval Treaty or subsequent London Naval Treaty and their guns converted into coastal artillery batteries, including installations at Tokyo Bay, Tarawa and later at Wake Island during World War II.

Gallery

File:Takasago 8 inch gun centre pivot plan diagram.jpg|A single 8 inch gun on center pivot mounting for Japanese cruiser Takasago commissioned 1898. File:Asama class 8 inch gun turret plan.jpg|A diagram of a twin 8 inch gun turret of Japanese Asama class cruiser. File:Asama class 8 inch gun turret right elevation.jpg|Right elevation diagram of a twin 8 inch gun turret of Japanese Asama class cruiser. File:Nisshin1905.jpg|Damage to Japanese armored cruiser Nisshin after a direct hit by a 12-inch shell during the Battle of Tsushima in May 1905. The explosion injured future Admiral Isoroku Yamamoto. File:8-inch-japanese-gun-betio.jpg|One of the four destroyed Japanese eight-inch guns on Betio caused by naval gunfire and air strikes. File:20.3 cm45 Type 41 naval gun.jpg|Possibly one of the same guns from a different angle.

Notes

References

Bishop, Chris (eds) The Encyclopedia of Weapons of World War II. Barnes & Nobel. 1998.

References

Friedman, pp. 74–75
Friedman, p. 275

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

naval-guns-of-japan 203-mm-artillery

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