4.5 inch (114 mm) gun
Encyclopedia
The QF 4.5 inch gun has been the standard medium-calibre naval gun used by the Royal Navy
Royal Navy
The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 as a medium range weapon capable of use against surface, aircraft and shore bombardment targets since 1938. This article covers the early 45-calibre family of guns up to the 1970s. For the later unrelated 55-calibre Royal Navy gun, see 4.5 inch Mark 8 naval gun.

Like all British nominally 4.5 inch naval guns, the QF Mk I has an actual calibre of 4.45 inches (113 mm).

Background

From the BL Mark I gun of 1916 onwards the 4.7-inch (120-mm) calibre was the mid-calibre weapon of choice for the Royal Navy, used particularly on destroyer
Destroyer
In naval terminology, a destroyer is a fast and maneuverable yet long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against smaller, powerful, short-range attackers. Destroyers, originally called torpedo-boat destroyers in 1892, evolved from...

s. Apart from some ships armed with QF 4-inch Mk V guns
QF 4 inch Mk V naval gun
The QF 4 inch Mk V gun was a Royal Navy gun of World War I which was adapted on HA mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.-Naval service:...

 due to supply problems, it remained the standard weapon for destroyers up to the W class destroyer
W and Z class destroyer
The W and Z class was a class of sixteen destroyers of the Royal Navy launched in 1943–1944. They were constructed as two flotillas, with names beginning with "W-" and "Z-", respectively, although, like the preceding U and V class, two of the flotilla leaders were named after historical naval...

s of 1943. However, its usefulness as an anti-aircraft weapon had been limited by the failure to develop a mounting with elevation over 55°, the lack of a predictive fire control system in destroyer classes built prior to the introduction of the 4.7" twin mount, (see HACS
HACS
HACS, an acronym of High Angle Control System, was a British anti-aircraft fire-control system employed by the Royal Navy from 1931 onwards and used widely during World War II...

) and the setting of fuzes by hand on early, prewar, mountings. Later 4.7" mountings used mechanical fuze setters that were identical to those used on the 4.5" mountings.

History

The QF 4.5 inch L/45 was developed originally as a dual-purpose weapon with which to arm aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s and reconstructed battleship
Battleship
A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...

s and battlecruiser
Battlecruiser
Battlecruisers were large capital ships built in the first half of the 20th century. They were developed in the first decade of the century as the successor to the armoured cruiser, but their evolution was more closely linked to that of the dreadnought battleship...

s. It was later developed as a new dual-purpose weapon with which to arm destroyers, supplanting the ubiquitous 4.7 inch gun. Despite the lower calibre, it actually had a heavier shell, resulting in a more powerful weapon.

Variants

The nomenclature system for guns used by the Royal Navy can be somewhat confusing. The gun and mounting each have their own Mark number and a letter(s) giving additional information. QF stands for "quick firing", UD for "upper deck", BD for "between decks" and CP for "central pivot".
  • QF Mark I: adopted after failure of a 5" gun project and used a fixed round, which proved to be somewhat heavy for the loaders to keep up the intended firing rate. Was fitted in twin mountings UD Mark III.
  • QF Mark II: Land service used by the British Army
    British Army
    The British Army is the land warfare branch of Her Majesty's Armed Forces in the United Kingdom. It came into being with the unification of the Kingdom of England and Scotland into the Kingdom of Great Britain in 1707. The new British Army incorporated Regiments that had already existed in England...

    .
  • QF Mark III: same as Mark I, except for firing mechanism. Was fitted in twin mountings BD Mark II, BD Mark II** and BD Mark IV. HMS Illustrious fired about 3000 rounds of 4.5" ammunition, at an average of 12 rounds per gun per minute, during one prolonged action in January 1941.
  • QF Mark IV: used a two part (charge and shell) ammunition system. Designed specifically for use by small warships. Fitted in mountings BD Mark IV, CP Mark V and UD Mark VI.
  • QF Mark V: a further development of the Mark IV, designed from the outset for anti-aircraft use with remote power control (RPC, where the guns automatically train and elevate the target following the director) and a high rate-of-fire assisted by automatic ramming. Carried in the mounting UD Mark VI, with separate high-angle and low-angle hoists for the two types of ammunition (AA and SAP/HE) and a third for the cartridges. The rate of fire of the Mk V was 24 rounds per minute when power-loaded, 12-14 when hand-loaded, and up to 18 in burst mode when hand-loaded.


Some 800 naval 4.5" guns of various marks were built. 474 guns were built for the army, all in 1939-41.

During the 1950s, a change was made in designating the weapons systems which focussed on the gun mount rather than the gun itself. Together with a change from Roman numerals
Roman numerals
The numeral system of ancient Rome, or Roman numerals, uses combinations of letters from the Latin alphabet to signify values. The numbers 1 to 10 can be expressed in Roman numerals as:...

, the Gun QF Mark V on mounting BD Mark VI became simply the Mark 6. The Mark 7 was never produced as the planned Malta class aircraft carriers
Malta class aircraft carrier
The Malta class aircraft carrier was a British large fleet aircraft carrier design of World War II. Inspired by the strike capability of United States Navy aircraft carriers, the Malta design took onboard several American innovations in hangar design and aircraft operations. Three ships were...

 they would have been used on were never built.

The majority of new escort vessels built for the Royal Navy in the 1950s and 1960s carried at least one Mark 6 mounting, with two in the Leopard class frigate
Leopard class frigate
The Type 41 or Leopard class were a class of anti-aircraft defence frigates built for the Royal Navy and Indian Navy in the 1950s. These ships were designed to provide anti-aircraft escorts to convoys, as a result they were not built for fleet speeds and made only...

 and County class destroyer
County class destroyer
The County class was a class of guided missile destroyers, the first such vessels built by the Royal Navy. Designed specifically around the Sea Slug anti-aircraft missile system, the primary role of these ships was area air-defence around the aircraft carrier task force in the nuclear-war...

 and three in the Daring class destroyer
Daring class destroyer (1949)
The Daring class was a class of eleven destroyers built for the Royal Navy and Royal Australian Navy . Constructed after World War II, and entering service during the 1950s, eight ships were constructed for the RN, and three ships for the RAN. Two of the RN destroyers were subsequently sold to and...

. This gave these ships a level of firepower unprecedented only 15 years earlier. The Type 81 Tribal class frigate
Tribal class frigate
The Type 81, or Tribal class, was a class of seven general-purpose frigates for the Royal Navy designed during the 1950s that served throughout the 1960s and 1970s with limited service during the 1980s.-History:...

s were an exception, using reconditioned Mark V mounts from scrapped C class destroyer
C class destroyer (1943)
The C class was a class of 32 destroyers of the Royal Navy that were launched from 1943 to 1945. The class was built in four flotillas of 8 vessels, the Ca, Ch, Co and Cr classes, ordered as the 11th, 12th, 13th and 14th Emergency Flotillas respectively...

s that were fitted with RPC and known as the Mark 5* Mod 1.

The evolution of the 45-calibre 4.5 inch gun family ended with the Mark V gun / Mark 6 mounting. It has been replaced by a new weapon of original design, the 4.5 inch Mark 8 with a 55 calibre
Caliber (artillery)
In artillery, caliber or calibredifference in British English and American English spelling is the internal diameter of a gun barrel, or by extension a relative measure of the length....

-long barrel.

Naval service

Ships with 4.5 inch guns QF Mark I in twin mounting UD Mark III
  • aircraft carrier Ark Royal
    HMS Ark Royal (91)
    HMS Ark Royal was an aircraft carrier of the Royal Navy that served during the Second World War.Designed in 1934 to fit the restrictions of the Washington Naval Treaty, Ark Royal was built by Cammell Laird and Company, Ltd. at Birkenhead, England, and completed in November 1938. Her design...

  • Dido class cruiser
    Dido class cruiser
    The Dido class was a class of sixteen light cruisers built for the Royal Navy. The design was influenced by the Arethusa class light cruisers. The first group of three ships was commissioned in 1940, the second group and third group were commissioned in 1941–1942...

    s Scylla
    HMS Scylla (98)
    HMS Scylla was a Dido-class cruiser of the Royal Navy. She was built by Scotts Shipbuilding and Engineering Company , with the keel being laid down on 19 April 1939...

     and Charybdis
    HMS Charybdis (88)
    HMS Charybdis was a Dido-class cruiser of the Royal Navy. She was built by Cammell Laird Shipyard , with the keel being laid down on 9 November 1939...

  • naval auxiliaries


Ships with 4.5 inch guns QF Mark III in twin mounting BD Mark II
  • reconstructed Queen Elizabeth class battleship
    Queen Elizabeth class battleship
    The Queen Elizabeth-class battleships were a class of five super-dreadnoughts of the Royal Navy. The lead ship was named after Elizabeth I of England...

    s Queen Elizabeth
    HMS Queen Elizabeth (1913)
    HMS Queen Elizabeth was the lead ship of the Queen Elizabeth-class of dreadnought battleships, named in honour of Elizabeth I of England. She saw service in both World Wars...

     and Valiant
    HMS Valiant (1914)
    HMS Valiant was a Queen Elizabeth-class battleship of the British Royal Navy. She was laid down at the Fairfield Shipbuilding and Engineering Company, Govan on 31 January 1913 and launched on 4 November 1914...

  • reconstructed Renown class battlecruiser
    Renown class battlecruiser
    The Renown class consisted of a pair of battlecruisers built during the First World War for the Royal Navy. They were originally laid down as improved versions of the s. Their construction was suspended on the outbreak of war on the grounds they would not be ready in a timely manner...

     Renown
    HMS Renown (1916)
    HMS Renown was the lead ship of her class of battlecruisers of the Royal Navy built during the First World War. She was originally laid down as an improved version of the s. Her construction was suspended on the outbreak of war on the grounds she would not be ready in a timely manner...

  • Illustrious class
    Illustrious class aircraft carrier
    The Illustrious class was a class of aircraft carrier of the Royal Navy that were some of the most important British warships in World War II...

     aircraft carrier
  • aircraft carrier Indomitable
    HMS Indomitable (R92)
    HMS Indomitable was a modified Illustrious class aircraft carrier of the British Royal Navy. The Illustrious class came about due to the 1937 Naval Programme...

  • Implacable class
    Implacable class aircraft carrier
    The Implacable class was a class of aircraft carrier employed by the Royal Navy in the second half of Second World War. The class design was derived from the .- Design :...

     aircraft carrier


Ships with 4.5 inch guns QF Mark III in twin mounting BD Mark II**
  • Audacious class
    Audacious class aircraft carrier
    The Audacious class aircraft carriers were a class of ship proposed by the British government in the 1930s - 1940s.- History :The Audacious class was originally designed as an expansion of the Implacable class with double storied hangars...

     aircraft carrier, Eagle and Ark Royal

Ships with 4.5 inch guns QF Mark III in twin mounting BD Mark IV
  • Battle class
    Battle class destroyer
    The Battle class were a class of destroyers of the British Royal Navy and Royal Australian Navy . Built in three groups, the first group were ordered under the 1942 naval estimates. A modified second and third group, together with two ships of an extended design were planned for the 1943 and 1944...

     destroyer
  • Nueva Esparta Class Destroyer
    Nueva Esparta class destroyer
    The Nueva Esparta-class destroyers were a class of warships used by the navy of Venezuela. The lead ship was named after Nueva Esparta , the name of the largest island in Venezuela....

     D-11 Nueva Esparta, D-21 Zulia and D-31 Aragua


Ships with 4.5 inch guns QF Mark IV in single mounting CP Mark V
  • Z class
    W and Z class destroyer
    The W and Z class was a class of sixteen destroyers of the Royal Navy launched in 1943–1944. They were constructed as two flotillas, with names beginning with "W-" and "Z-", respectively, although, like the preceding U and V class, two of the flotilla leaders were named after historical naval...

     destroyer
  • Ca, Ch, Co and Cr class
    C class destroyer (1943)
    The C class was a class of 32 destroyers of the Royal Navy that were launched from 1943 to 1945. The class was built in four flotillas of 8 vessels, the Ca, Ch, Co and Cr classes, ordered as the 11th, 12th, 13th and 14th Emergency Flotillas respectively...

     destroyer
  • "1944" Battle class
    Battle class destroyer
    The Battle class were a class of destroyers of the British Royal Navy and Royal Australian Navy . Built in three groups, the first group were ordered under the 1942 naval estimates. A modified second and third group, together with two ships of an extended design were planned for the 1943 and 1944...

     destroyer


Ships with 4.5 inch guns Mark 5* (rebuilt mounting CP Mark V).
  • rebuilt Ca class destroyer (Mark 5* Mod 1)
  • Type 81 Tribal class
    Tribal class frigate
    The Type 81, or Tribal class, was a class of seven general-purpose frigates for the Royal Navy designed during the 1950s that served throughout the 1960s and 1970s with limited service during the 1980s.-History:...

     frigate (Mark 5* Mod 2)


Ships with 4.5 inch guns QF Mark V in twin mounting UD Mark VI (later renamed gun Mark 6)
  • Daring class
    Daring class destroyer (1949)
    The Daring class was a class of eleven destroyers built for the Royal Navy and Royal Australian Navy . Constructed after World War II, and entering service during the 1950s, eight ships were constructed for the RN, and three ships for the RAN. Two of the RN destroyers were subsequently sold to and...

     destroyer
  • County class
    County class destroyer
    The County class was a class of guided missile destroyers, the first such vessels built by the Royal Navy. Designed specifically around the Sea Slug anti-aircraft missile system, the primary role of these ships was area air-defence around the aircraft carrier task force in the nuclear-war...

     destroyer
  • Type 12 Whitby class
    Whitby class frigate
    The Type 12 frigates of the Whitby class were a six-ship class of anti-submarine warfare frigates of the Royal Navy that entered service late in the 1950s. They were designed as first rate ocean-going convoy escorts in light of experience gained during World War II...

     frigate
  • Type 12I Rothessay class
    Rothesay class frigate
    The Rothesay class, or Type 12M frigates were a class of frigates serving with the Royal Navy, South African Navy and the New Zealand Navy....

     frigate
  • Type 12M Leander class
    Leander class frigate
    The Leander class, or Type 12I frigates, comprising twenty-six vessels, was among the most numerous and long-lived classes of frigate in the Royal Navy's modern history. The class was built in three batches between 1959 and 1973...

     frigate
    • Van Speijk class frigate
      Van Speijk class frigate
      The Van Speijk class frigate were built for the Royal Netherlands Navy in the 1960s. They were versions of the British Leander class frigates with Dutch radars. The British design was chosen in order to enable rapid construction in order to replace elderly destroyer escorts. The ships were...

       - Netherland Navy versions of Leander
    • River class destroyer escort
      River class destroyer escort
      The River class was a class of six destroyer escorts operated by the Royal Australian Navy . Plans to acquire four vessels, based on the British Type 12M frigate, began in the 1950s. The first two vessels had some slight modifications to the design, while the next two underwent further changes...

       - Australian versions
  • Type 41 Leopard class
    Leopard class frigate
    The Type 41 or Leopard class were a class of anti-aircraft defence frigates built for the Royal Navy and Indian Navy in the 1950s. These ships were designed to provide anti-aircraft escorts to convoys, as a result they were not built for fleet speeds and made only...

     frigate
  • Type 61 Salisbury class
    Salisbury class frigate
    The Type 61 Salisbury class were a class of British aircraft direction frigates built for the Royal Navy. They were related to the Type 41 Leopard class frigates, but with reduced armament to make way for more aircraft direction equipment.-Construction Programme:Three further ships of the class...

     frigate

Land service

QF Mark II was a single gun mounting (Mounting Mk 1) anti-aircraft gun in static sites. The pedestal mount was bolted to concrete in an unarmoured turret, a travelling platform was available to transport the gun and mounting between positions. The first unit became operational in February 1939. These 16.5 ton anti-aircraft mountings had a max elevation angle of 80 degrees. However, most mountings were Mark 1A with an elevation range of -9.5 to 80 degrees, this enabled the gun to be dual role (AA/CD) in coastal areas, armour piercing was provided for anti-ship engagements.

The guns were fitted with Magslip electrical data transfer from Predictors AA Nos 3, 5 and 10 and were probably used inially with GL radars and UB 10 18 feet base optical height & rangefinders. AA control radars evolved rapidly. The gun was laid and fuzes set by pointer matching, it is unclear the extent to which advances in 3.7-inch fire control were applied to 4.5-inch. However, mid-war Machine Fuze Setter No 10 was added, this improved the rate of fire from 8 to 10 rounds per minute and raised the effective ceiling to 34,500 feet.

Gun positions were usually in the vicinity of naval bases where they could use the naval ammunition supply. However, initially the standard fuze was an igniferous design, No 199 with a maximum running time of 30 seonds that limited performance. Subsequently No 209 a mechanical time fuze was introduced. However, it appears that VT fuzes were not issued.

Guns were usually deployed in troops of 4 as part of a two troop battery, although sections of two guns occupied some positions. Deployment included:

UK (Royal Artillery) June 1940:
  • 1st AA Division - 48
  • 2nd AA Division - 40
  • 3rd AA Division - 64
  • 4th AA Division - 52
  • 5th AA Division - 24
  • 6th AA Division - 52
  • 7th AA Division - 64

(the AA divisions included 3-inch and 3.7-inch regiments in addition to 4.5-inch)

Far East January 1942:
  • Singapore - 4 (Hong Kong & Singapore Artillery)

Mediterranean June 1943:
  • Malta - 10

Middle East January 1943:
  • Aden - 2 (Hong Kong & Singapore Artillery)
  • Port Said - 2 (Royal Malta Artillery)

West Africa Dec 1941:
  • Takoradi - 6

India Dec 1941:
  • Bombay - 6


Colonel Probert of the Armaments Research Department developed rifling with tapered groove depth, and the last few inches of the barrel being smoothebore. This was used with a 4.5 barrel lined down to 3.7 inches, but retaining the large chamber, hence a large propelling charge. Ordnance, QF 3.7 inch Mk 6, only on a static mounting, entered service in 1943 and continued in service until 1959. It had an effective ceiling of 45,000 feet.

The high performance of QF 3.7 inch Mk 6 and QF 5.25 inch meant that QF 4.5 inch was not retained in land service after World War II.

Surviving examples

  • Single Mk IV/CP Mk V mounting from INS Yaffo
    W and Z class destroyer
    The W and Z class was a class of sixteen destroyers of the Royal Navy launched in 1943–1944. They were constructed as two flotillas, with names beginning with "W-" and "Z-", respectively, although, like the preceding U and V class, two of the flotilla leaders were named after historical naval...

    , at Clandestine Immigration and Naval Museum, Haifa
    Haifa
    Haifa is the largest city in northern Israel, and the third-largest city in the country, with a population of over 268,000. Another 300,000 people live in towns directly adjacent to the city including the cities of the Krayot, as well as, Tirat Carmel, Daliyat al-Karmel and Nesher...

    , Israel.
  • Australia:
    • Twin Mk V/Mk 6 turrets on HMAS Vampire (D11)
      HMAS Vampire (D11)
      HMAS Vampire was the third of three Australian-built Daring class destroyers serving in the Royal Australian Navy . One of the first all-welded ships built in Australia, she was constructed at Cockatoo Island Dockyard between 1952 and 1959, and was commissioned into the RAN a day after...

       museum ship at Australian National Maritime Museum
      Australian National Maritime Museum
      The Australian National Maritime Museum is a federally-operated maritime museum located in Darling Harbour, Sydney. After consideration of the idea to establish a maritime museum, the Federal government announced that a national maritime museum would be constructed at Darling Harbour, tied into...

      , Sydney, Australia.
    • Twin Mk V/Mk 6 turret from HMAS Derwent (DE 49) at Rockingham Naval Memorial Park, Rockingham, Western Australia.
    • Twin Mk V/Mk 6 turret from HMAS Swan (DE 50) at Princess Royal Fortress, Albany, Western Australia
      Albany, Western Australia
      Albany is a port city in the Great Southern region of Western Australia, some 418 km SE of Perth, the state capital. As of 2009, Albany's population was estimated at 33,600, making it the 6th-largest city in the state....

      . This turret is open and accessible to visitors.
    • Twin Mk V/Mk 6 turret from HMAS Torrens (DE 53) at Princess Royal Fortress, Albany, Western Australia
      Albany, Western Australia
      Albany is a port city in the Great Southern region of Western Australia, some 418 km SE of Perth, the state capital. As of 2009, Albany's population was estimated at 33,600, making it the 6th-largest city in the state....

      .
    • Twin Mk V/Mk 6 turret used as a static training aid outside the Gunnery School, HMAS Cerberus, Crib Point, Australia.
    • Twin Mk V/Mk 6 turret as a gate guard at the West Head Gunnery Range, Flinders
      Flinders, Victoria
      Flinders is a historic town south of Melbourne, Victoria, Australia, located on the Mornington Peninsula at the point where Western Port meets Bass Strait. Its Local Government Area is the Shire of Mornington Peninsula...

      , Australia. Previously used at the gunnery range as a live training aid, the gun was last fired in 2005.
    • Twin Mk V/Mk 6 turret at the Bendigo and District RSL
      Returned and Services League of Australia
      The Returned and Services League of Australia is a support organisation for men and women who have served or are serving in the Australian Defence Force ....

      . Owned by the Australian Government, it is on loan from the nearby defence manufacturer Thales.
    • Twin Mk V/Mk 6 turret at TS Bendigo
      Australian Navy Cadets
      The Australian Navy Cadets is a voluntary youth organisation sponsored by the Royal Australian Navy. Together with the Australian Air Force Cadets and Australian Army Cadets, it forms the Australian Defence Force Cadets. It hosts over 91 units.-History:...

       at Passchendaele Barracks, Junortoun near Bendigo. As the previous location of TS Bendigo was on the Government Ordnance Factory site (now Thales Australia), it is probable it is also on loan from Thales.
  • New Zealand:
    • Twin Mk V/Mk 6 turret from HMNZS Canterbury
      HMNZS Canterbury (F421)
      HMNZS Canterbury was one of two broad beam Leander class frigates operated by the Royal New Zealand Navy from 1971 to 2005. HMNZS Canterbury was laid down on 12 June 1969 by Yarrow Shipbuilders and launched 11 months later on 6 May 1970....

       at Devonport Naval Base
      Devonport Naval Base
      Devonport Naval Base is the home of the Royal New Zealand Navy, located at Devonport, New Zealand on Auckland's North Shore. It is currently the only base of the navy that operates ships, and was a navy base from as far back as 1841...

      , Devonport, New Zealand
      Devonport, New Zealand
      Devonport is a harbourside suburb of Auckland, New Zealand. It is located on the North Shore, at the southern end of a peninsula that runs southeast from near Lake Pupuke in Takapuna, forming the northern side of the Waitemata Harbour...

      .
    • Twin Mk V/Mk 6 turret from HMNZS Taranaki at Te Papapa
      Te Papapa
       - to the north-east  - to the east  - to the south  - to the south-west  - to the west  - to the north-west Penrose Mount Wellington Southdown Favona Mangere Bridge Onehunga...

      , Auckland
      Auckland
      The Auckland metropolitan area , in the North Island of New Zealand, is the largest and most populous urban area in the country with residents, percent of the country's population. Auckland also has the largest Polynesian population of any city in the world...

      , New Zealand.
  • United Kingdom:
    • Single Mk IV/CP Mk V mountings on HMS Cavalier
      HMS Cavalier (R73)
      HMS Cavalier is a retired C-class destroyer of the Royal Navy. She was laid down by J. Samuel White and Company at East Cowes on 28 March 1943, launched on 7 April 1944, and commissioned on 22 November 1944. She served in World War II and in various commissions in the Far East until she was...

       museum ship, at Chatham Historic Dockyard
      Chatham Historic Dockyard
      Chatham Historic Dockyard is a maritime museum on part of the site of the former royal/naval dockyard at Chatham in Kent, England.Chatham Dockyard covered 400 acres and was one of the Royal Navy's main facilities for several hundred years until it was closed in 1984. After closure the dockyard was...

      , UK.
    • Twin Mk V/Mk 6 turret on HMS Plymouth (F126)
      HMS Plymouth (F126)
      HMS Plymouth is a Rothesay class frigate, which served in the United Kingdom Royal Navy from 1959 to 1988. She was named after the English city of Plymouth...

       in Vittoria Dock
      Vittoria Dock
      Vittoria Dock is a dock in Birkenhead, Wirral Peninsula, England. It was built between 1905 and 1909 within the Great Float.-The name 'Vittoria':The dock is named after the Battle of Vittoria, fought on 21 June 1813 and was designed by A.G.Lyster....

      , Birkenhead
      Birkenhead
      Birkenhead is a town within the Metropolitan Borough of Wirral in Merseyside, England. It is on the Wirral Peninsula, along the west bank of the River Mersey, opposite the city of Liverpool...

      , UK.

See also

  • Anti-aircraft warfare
    Anti-aircraft warfare
    NATO defines air defence as "all measures designed to nullify or reduce the effectiveness of hostile air action." They include ground and air based weapon systems, associated sensor systems, command and control arrangements and passive measures. It may be to protect naval, ground and air forces...

  • 4.5 inch Mark 8 naval gun The Royal Navy's current, but unrelated, 4.5" gun
  • 5"/38 caliber gun and 5"/54 caliber Mark 42 gun, the US Navy equivalents

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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