HMS Grafton (F80)

The Leander-class, or Type 12I (Improved) 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. It had an unusually high public profile, due to the popular BBC television drama series Warship. The Leander silhouette became synonymous with the Royal Navy through the 1960s until the 1980s.

The beam of a ship is its width at its widest point. The maximum beam (BMAX) is the distance between planes passing through the outer extremities of the ship, beam of the hull (BH) only includes permanently fixed parts of the hull, and beam at waterline (BWL) is the maximum width where the hull intersects the surface of the water.

The draft or draught of a ship's hull is the vertical distance between the waterline and the bottom of the hull (keel). The draught of the vessel is the maximum depth of any part of the vessel, including appendages such as rudders, propellers and drop keels if deployed. Draft determines the minimum depth of water a ship or boat can safely navigate. The related term air draft is the maximum height of any part of the vessel above the water.

The displacement or displacement tonnage of a ship is its weight. As the term indicates, it is measured indirectly, using Archimedes' principle, by first calculating the volume of water displaced by the ship, then converting that value into weight. Traditionally, various measurement rules have been in use, giving various measures in long tons. Today, tonnes are more commonly used.

A gas turbine, also called a combustion turbine, is a type of continuous flow internal combustion engine. The main parts common to all gas turbine engines form the power-producing part and are, in the direction of flow:a rotating gas compressor a combustor a compressor-driving turbine.

The Paxman Valenta was an engine made by Paxman, Colchester for the High Speed Train, and is still in use in various marine applications, such as the Upholder/Victoria-class submarines, additionally 4 Paxman Valenta engines provide the electrical power to propel and operate the Royal Navy’s Type 23 Frigates.

The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is called a compression-ignition engine. This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine or a gas engine.

The knot is a unit of speed equal to one nautical mile per hour, exactly 1.852 km/h. The ISO standard symbol for the knot is kn. The same symbol is preferred by the Institute of Electrical and Electronics Engineers (IEEE), while kt is also common, especially in aviation, where it is the form recommended by the International Civil Aviation Organization (ICAO). The knot is a non-SI unit. The knot is used in meteorology, and in maritime and air navigation. A vessel travelling at 1 knot along a meridian travels approximately one minute of geographic latitude in one hour.

Anti-submarine warfare is a branch of underwater warfare that uses surface warships, aircraft, submarines, or other platforms, to find, track, and deter, damage, or destroy enemy submarines. Such operations are typically carried out to protect friendly shipping and coastal facilities from submarine attacks and to overcome blockades.

The 4.5 inch Mark 8 is a British naval gun system which currently equips the Royal Navy's destroyers and frigates, and some British destroyers and frigates sold to other countries.

Malaysia is a country in Southeast Asia. The federal constitutional monarchy consists of thirteen states and three federal territories, separated by the South China Sea into two regions: Peninsular Malaysia and Borneo's East Malaysia. Peninsular Malaysia shares a land and maritime border with Thailand and maritime borders with Singapore, Vietnam, and Indonesia. East Malaysia shares land and maritime borders with Brunei and Indonesia, and a maritime border with the Philippines and Vietnam. Kuala Lumpur is the national capital, the country's largest city, and the seat of the legislative branch of the federal government. Putrajaya is the administrative center, which represents the seat of both the executive branch and the judicial branch of the federal government. With a population of over 32 million, Malaysia is the world's 45th-most populous country. The southernmost point of continental Eurasia is in Tanjung Piai. Located in the tropics, Malaysia is one of 17 megadiverse countries, home to numerous endemic species.

ITV is a British free-to-air public broadcast television network. It was launched in 1955 as Independent Television to provide competition to BBC Television. ITV is the oldest commercial network in the UK. Since the passing of the Broadcasting Act 1990, it has been legally known as Channel 3 to distinguish it from the other analogue channels at the time: BBC One, BBC Two, and Channel 4.

Making Waves is a British television drama series produced by Carlton Television for ITV. It was created by Ted Childs and chronicles the professional and personal lives of the crew of the Royal Navy frigate HMS Suffolk. The series remained in development hell for several years and was first broadcast on 7 July 2004. However, due to low ratings it was removed from the schedules after only three episodes, the remainder of the series going unaired on television in the United Kingdom.

The Persian Gulf, sometimes called the Arabian Gulf, is a mediterranean sea in Western Asia. The body of water is an extension of the Indian Ocean located between Iran and the Arabian Peninsula. It is connected to the Gulf of Oman in the east by the Strait of Hormuz. The Shatt al-Arab river delta forms the northwest shoreline.

The Chilean Navy is the naval warfare service branch of the Chilean Armed Forces. It is under the Ministry of National Defense. Its headquarters are at Edificio Armada de Chile, Valparaiso.

Ipswich is a town and borough in Suffolk, England, of which it is the county town. The town is located in East Anglia about 9.9 mi (16 km) away from the mouth of the River Orwell and the North Sea.

A ship's bell is a bell on a ship that is used for the indication of time as well as other traditional functions. The bell itself is usually made of brass or bronze, and normally has the ship's name engraved or cast on it.

Patricio Javier de los Dolores Lynch y Solo de Zaldívar was a lieutenant in the Royal Navy and a rear admiral in the Chilean Navy, and one of the principal figures of the later stages of the War of the Pacific. He has been nicknamed the "Last Viceroy of Peru", and the Chinese slave-labourers he liberated from the Peruvian haciendas called him the "Red Prince" because of his red hair.

The CAMM is a family of surface-to-air missiles developed by MBDA UK for the United Kingdom. CAMM shares some common features and components with the ASRAAM air-to-air missile, but with updated electronics and an active radar homing seeker.

A military exercise, training exercise, or war game is the employment of military resources in training for military operations. Military exercises are conducted to explore the effects of warfare or test tactics and strategies without actual combat. They also ensure the combat readiness of garrisoned or deployable forces prior to deployment from a home base.