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...ancisco Bay]], bound for [[Hawaii]]. Reaching [[Pearl Harbor]], Hawaii, on 28 November 1944, she got underway again on 30 November 1944 and proceeded ind ...ce]] and attack missions. The PBM-3D Mariners of VPB 28 relieved VPB 71 on 28 February 1945 and continued the nocturnal missions begun by the PBYs.

...ert|4|in|mm|0|abbr=on}}/50 gun<ref name=Con-123 /><br>8 × {{convert|21|in|mm|0|abbr=on}} [[torpedo tube]]s<ref group=Note>''Conway's'' (p. 123) lists ei ...ed with four {{convert|4|in|cm|adj=on}} guns and had eight {{convert|21|in|mm|adj=on}} [[torpedo tube]]s. ''Porter'' was powered by a pair of [[steam tur

|Ship decommissioned= 28 June 1946 |Ship fate= Transferred to the Coast Guard, 28 June 1946, commissioned 1 February 1947 as USCGC ''Heather'' [http://www.us

|name=28 cm kanon M/12 |caption=Aft 283 mm dual turret on [[Coastal defence ship]] Gustav V

|image= [[Image:28 mm AA gun.jpg|300px]] |caption= Quadruple-mount 1.1-inch (28 mm) anti-aircraft cannon aboard the battleship [[USS Pennsylvania (BB 38)]] du

...sian Civil War]]<br>[[Greco-Turkish War]]<br>[[World War II]] ''As coastal artillery'' |caliber={{convert|12|in|mm|sing=on|sigfig=4}}

|name=15 cm SK C/28 |caption=15 cm SK C/28 in Drh LC/34 turret from [[German warship Gneisenau (1936)|Gneisenau]] used

|caliber=8inch&nbsp;mm <!-- Artillery specifications -->

The German '''28&nbsp;cm C/28 naval gun''' was a 283&nbsp;mm 52-[[Caliber#Caliber as measurement of length|caliber]] [[built-up gun]] de Characteristics of SK C/28 and the later SK C/34 283&nbsp;mm shells are in the table below:

The German '''28 cm C/34 naval gun''' was a 283 mm 54.5-[[Caliber#Caliber as measurement of length|caliber]] [[built-up gun]] [[File:28 cm sk c-34 unloaded in Bergen before shipping to Sotra and mounted on Fjell

|caliber= {{convert|14|in|mm|sing=on}} <!-- Artillery specifications -->

|cartridge=[[20 x 138B cartridge|20 × 138 mm. B]] |caliber=20 mm (.79 in)

...age:Autocanon 2A42 on the Mi28N heli.JPG|300px|thumb|2А42 on the [[Mil Mi-28]] [[helicopter]]]] The '''Shipunov 2A42''' is a [[Soviet Union|Soviet]]/[[Russia]]n 30&nbsp;mm [[automatic cannon]]. It is built by the Tulamashzavod Joint Stock Company.

|name=37 mm automatic air defense gun M1939 (61-K) |caption=61-K in Saint Petersburg Artillery Museum.

|part_length={{convert|244.75|in|m|sigfig=4}} bore (55 [[Caliber (artillery)|calibres]]) |caliber=4.45-inch (113 mm)<ref name=Janes1999/><!-- Many sources quote 114mm as the calibre but it is

| armour=6–13 mm on the hull, 28 mm on the turret | primary_armament=40&nbsp;mm Bofors/60 AA-gun

...5&nbsp;inches (127&nbsp;mm) in diameter, and the barrel was 25 [[Caliber (artillery)|caliber]]s long (that is, for a 5" bore and a barrel length of 25 calibers *{{USS|Louisville|CA-28}}<ref name=F9 />

|cartridge= 5 inch (127 mm) <!-- Artillery specifications -->

|cartridge= 5 inch (127 mm) <!-- Artillery specifications -->

|image= [[Image:75 mm L45 M16.png|250px]] |caliber= 75 mm

|caliber= 75 mm ...designed in the later half of [[World War I]], was needed. A number of 76 mm anti aircraft guns had been bought from [[Bofors]] in 1928, but were no mor

|caliber={{convert|200|mm|in|sigfig=1|sp=us}} <!-- Artillery specifications -->

|caption= 90 mm M1 at [[CFB Borden]] |name= 90 mm M1A1

<!-- Artillery specifications --> Originally designed for mounting as a vertical gun, this 155&nbsp;mm (6.1") caliber gun has since been slated for mounting within a more convent

...e Industries]] (UDI) purchased Bofors Weapon Systems from Saab (the tube [[artillery]] interests), while Saab retained the [[missile]] interests. In 2005 BAE Sy ...quires Pitch Technologies AB.| publisher = BAE Systems plc| date = 2007-11-28| url =http://www.baesystems.com/Newsroom/NewsReleases/autoGen_107102894230.

|caliber={{convert|13.5|in|mm|sing=on|sigfig=4}} <!-- Artillery specifications -->

...nel guns in the Second World War|Two guns]] were also mounted as [[coastal artillery]] near [[Dover]]. A total of 78 guns were made. * Bore - 14 inches (356 mm)

| caliber = {{convert|18|in|mm}} <!-- Artillery specifications -->

...40 mm grenade]]s in both the low velocity 40x46 mm and high velocity 40x53 mm calibers which uses what it calls [[High-Low System|High-Low Propulsion Sys ...differed from the M381/M441 in that they had a longer arming distance (14-28 meters compared to the 2-3 meters of the M381 and M441).

...r>Mk VII : {{convert|204|in|mm|sigfig=4}}<br>Mk IV & VI : {{convert|237|in|mm|sigfig=4}} bore<ref name=Gunnery1902/> |caliber={{convert|8|in|mm|sing=on|sigfig=4}}

|caliber={{convert|8|in|mm|sing=on|sigfig=3}}<ref name="Campbell"/> |max_range= {{convert|28|km|mi}}<ref name="Campbell"/>

|caliber= {{convert|9.2|in|mm|sigfig=4}} |weight=28 tons barrel & breech

|used_by=[[Royal Garrison Artillery, Royal Artillery from 1922]] |weight=Mk IX : 27 tons barrel & breech; Mk X : 28 tons<ref name=Gunnery1902>Text Book of Gunnery 1902, Table XII Page 336</re

|name=Bofors 37 mm anti-tank gun |cartridge=37×249 mm. R

|name= Bofors 40 mm gun |caption= '''Bofors 40 mm/L60'''. This example includes the British-designed ''Stiffkey Sight'', bein

! width=12% | [[Caliber]] (mm) | 20 mm || [[Oerlikon 20 mm cannon]] || {{CHE}} || World War II

|length= {{mm to in|1650|abbr=on|precision=1|wiki=yes}} |part_length= {{convert|1143|mm|abbr=on|1}}

|length= {{convert|71.93|in|mm|abbr=on}} |cartridge= 20 × 102 mm.

|cartridge= 20 x 80 mm |caliber= 20 mm

|image= [[Image:Il-28 NR-23.jpg|300px]] |caption= NR-23 cannons in tail barbette of the [[Ilyushin Il-28|Il-28]] bomber.

|name= 35 mm Oerlikon GDF-003 |image= [[File:35 mm Oerlikon.jpg|300px]]

|name=Otobreda 76 mm |part_length=62 caliber: {{convert|4724.4|mm|in|abbr=on|lk=on}}

|part_length={{convert|43.5|in|mm|sigfig=4}} (bore) |caliber= {{convert|37|mm|in|sigfig=4|sing=on}}

|caliber= 40 mm (1.575 in) <!-- Artillery specifications -->

|cartridge= 28 lb (12.7 kg) |caliber= 3.7 inches (94 mm)

...[Caliber#Caliber_as_measurement_of_length|cal]])<br>Total {{convert|140|in|mm|sing=on}}<ref name=Hogg&Thurston1972page79/> |caliber=3 inch (76 mm)

|type=[[Naval gun]]<br>[[Field gun|Medium field gun]]<br>[[Coastal artillery|Coastal defence gun]] |caliber={{convert|120|mm|sigfig=3}}

|type= [[Naval gun]]<br>Heavy [[anti-aircraft gun]]<br>[[Coastal artillery|Coastal defence gun]] |caliber={{convert|4|in|mm|sigfig=4|sing=on}}

| accessdate = 2006-09-28 ...ry armament, by the end of the war, with RPC first appearing on Vickers 40 mm (Pom Pom) 4 and 8 barrel mounts in late 1941.</ref>

<!-- Artillery specifications --> The Type 91 [[torpedo]] had 450&nbsp;mm (17-3/4 in) diameter. There were five models of body design and five models

...(arms)|advanced primer ignition blowback]] mechanism pioneered by the [[20 mm Becker|Becker]] cannon, but fired different ammunition: 20x72RB, 20x100RB a ...igō Kizyū, Kanji: 九九式二号機銃) The Japanese Navy classified 20-mm weapons as machine guns rather than cannon.<ref name="Mikesh"/> These weapo