QF 4-inch naval gun Mk XVI

HMS Berwick, pennant number 65, was a County-class heavy cruiser of the British Royal Navy, part of the Kent subclass. She was built by Fairfield Shipbuilding and Engineering Company, with the keel being laid down on 15 September 1924. She was launched on 30 March 1926 and commissioned 12 July 1927.

Autofrettage is a work hardening process in which a pressure vessel is subjected to enormous pressure, causing internal portions of the part to yield plastically, resulting in internal compressive residual stresses once the pressure is released. The goal of autofrettage is to increase the pressure carrying capacity of the final product. Inducing residual compressive stresses into materials can also increase their resistance to stress corrosion cracking; that is, non-mechanically-assisted cracking that occurs when a material is placed in a corrosive environment in the presence of tensile stress. The technique is commonly used in manufacture of high-pressure pump cylinders, warship and gun barrels, and fuel injection systems for diesel engines. Due to work hardening process it also enhances wear life of the barrel marginally. While autofrettage will induce some work hardening, that is not the primary mechanism of strengthening.

The Ghana Navy (GN) is the naval warfare organizational military branch of the Ghanaian Armed Forces (GAF). The Ghanaian Navy, along with the Ghanaian Army (GA) and Ghanaian Air Force (GHF), make up the Ghanaian Armed Forces (GAF) which are controlled by the Ghanaian Ministry of Defence (MoD).

The Royal Malaysian Navy is the naval arm of the Malaysian Armed Forces. RMN is the main agency responsible for the country's maritime surveillance and defense operations. RMN's area of operation consists of 603,210 square kilometers covering the country's coastal areas and Exclusive Economic Zones (EEZ). RMN also bears the responsibility of controlling the country's main Sea Lines of Communications (SLOC) such as the Straits of Malacca and the Straits of Singapore and also monitors national interests in areas with overlapping claims such as in Spratly.

HMS Furious was a modified Courageous-class battlecruiser built for the Royal Navy (RN) during the First World War. Designed to support the Baltic Project championed by the First Sea Lord, Lord Fisher, the ship was very lightly armoured and designed with a main battery of only two 18-inch guns. Furious was modified as an aircraft carrier while under construction. Her forward turret was removed and a flight deck was added in its place, such that aircraft had to manoeuvre around the superstructure to land. Later in the war, the ship had her rear turret removed and a second flight deck installed aft of the superstructure, but this was less than satisfactory due to air turbulence. Furious was briefly laid up after the war before she was reconstructed with a full-length flight deck in the early 1920s.

HMS Unicorn was an aircraft repair ship and light aircraft carrier built for the Royal Navy in the late 1930s. She was completed during World War II and provided air cover over the amphibious landing at Salerno, Italy, in September 1943. The ship was transferred to the Eastern Fleet in the Indian Ocean at the end of the year. Unicorn supported the aircraft carriers of the fleet on their operations until the British Pacific Fleet (BPF) was formed in November 1944. She was transferred to Australia in early 1945 to support the BPF's operations during Operation Iceberg, the Allied invasion of Okinawa in May. To shorten the time required to replenish the BPF's carriers, the ship was based in the Admiralty Islands and in the Philippine Islands until the Japanese surrender in August. Unicorn was decommissioned and placed in reserve when she returned to the UK in January 1946.

HMS Pretoria Castle (F61) was a Union-Castle ocean liner that in the Second World War was converted into a Royal Navy armed merchant cruiser, and then converted again into an escort carrier. After the war she was converted back into a passenger liner and renamed Warwick Castle.

HMS Activity was an escort carrier that served with the Royal Navy of the United Kingdom during the Second World War. After the war, she was sold into merchant service as the MV Breconshire, serving for over 20 years until scrapped in 1967.

The C class was a group of twenty-eight light cruisers of the Royal Navy, and were built in a sequence of seven groups known as the Caroline class, the Calliope class, the Cambrian class, the Centaur class, the Caledon class, the Ceres class and the Carlisle class. They were built for the rough conditions of the North Sea, and proved to be rugged and capable vessels, despite being somewhat small and cramped.

HMS Barham was one of five Queen Elizabeth-class battleships built for the Royal Navy during the early 1910s. Completed in 1915, she was often used as a flagship and participated in the Battle of Jutland during the First World War as part of the Grand Fleet. For the rest of the war, except for the inconclusive action of 19 August 1916, her service generally consisted of routine patrols and training in the North Sea.

HMS Malaya was one of five Queen Elizabeth-class battleships built for the Royal Navy during the 1910s. Shortly after commissioning in early 1916, she participated in the Battle of Jutland of the First World War as part of the Grand Fleet. In the Second World War, Malaya served mostly in escort duties in the Mediterranean Sea and Atlantic Ocean. She was withdrawn from service at the end of 1944, and sold for scrap in 1948.

HMS Warspite was one of five Queen Elizabeth-class battleships built for the Royal Navy during the early 1910s. Completed during the First World War in 1915, she was assigned to the Grand Fleet and participated in the Battle of Jutland. Other than that battle, and the inconclusive Action of 19 August, her service during the war generally consisted of routine patrols and training in the North Sea. During the interwar period the ship was deployed in the Atlantic Ocean and the Mediterranean Sea, often serving as flagship, and was thoroughly modernised in the mid-1930s.

The County class was a class of heavy cruisers built for the Royal Navy in the years between the First and Second World Wars. They were the first post-war cruisers constructed for the Royal Navy and were designed within the limits of the Washington Naval Treaty of 1922. Such ships, with a limit of 10,000 tons, standard displacement and 8-inch calibre main guns may be referred to as "treaty cruisers".

HMS Exeter was the second and last York-class heavy cruiser built for the Royal Navy during the late 1920s. Aside from a temporary deployment with the Mediterranean Fleet during the Abyssinia Crisis of 1935–36, she spent the bulk of the 1930s assigned to the Atlantic Fleet or the North America and West Indies Station. When World War II began in September 1939, the cruiser was assigned to patrol South American waters against German commerce raiders. Exeter was one of three British cruisers that fought the German heavy cruiser Admiral Graf Spee, later that year in the Battle of the River Plate. She was severely damaged during the battle, and she was in the shipyard for over a year.

The Arethusa class was a class of four light cruisers built for the Royal Navy between 1933 and 1937 and that served in World War II. It had been intended to construct six ships, but the last pair, Polyphemus and Minotaur, were ordered in 1934 as the 9,100-ton Town-class Southampton and Newcastle.

A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several roles.

HMAS Swan (U74/F74/A427), named for the Swan River, was a Grimsby-class sloop of the Royal Australian Navy (RAN) that served during World War II.

HMAS Barcoo (K375/F375/A245) was a River-class frigate of the Royal Australian Navy (RAN). One of twelve frigates constructed in Australia during World War II, Barcoo, was laid down by Cockatoo Docks & Engineering Company, Sydney in 1942, and commissioned in early 1944.

HMS Glasgow was a Town-class cruiser commissioned in September 1937. She took part in the Fleet Air Arm raid that crippled the Italian Fleet at Taranto in 1940. She had the unfortunate experience of sinking two Allied ships during her wartime service, once through accidental collision and the other by gunfire after a case of mistaken identity.

The V and W class was an amalgam of six similar classes of destroyer built for the Royal Navy under the 9th, 10th, 13th and 14th of fourteen War Emergency Programmes during the First World War and generally treated as one class. For their time they were among the most powerful and advanced ships of their type in the world, and set the trend for future British designs.