A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, such a device was called an automotive, automobile, locomotive, or fish torpedo; colloquially a fish. The term torpedo originally applied to a variety of devices, most of which would today be called mines. From about 1900, torpedo has been used strictly to designate a self-propelled underwater explosive device.
HMS Hermes was a British aircraft carrier built for the Royal Navy and was the world's first ship to be designed as an aircraft carrier, although the Imperial Japanese Navy's Hōshō was the first to be commissioned. The ship's construction began during the First World War, but she was not completed until after the end of the war, having been delayed by multiple changes in her design after she was laid down. After she was launched, the Armstrong Whitworth shipyard which built her closed, and her fitting out was suspended. Most of the changes made were to optimise her design, in light of the results of experiments with operational carriers.
Lei Yue Mun is a short channel in Hong Kong. It lies between Junk Bay and Victoria Harbour, separating Kowloon and Hong Kong Island. The channel is an important passage for the city, forming the eastern entrance of Victoria Harbour.
Devil's Peak is a peak in Sai Kung District, Hong Kong. The communities of Tiu Keng Leng, Lei Yue Mun and Yau Tong surround this peak.
Fort Ricasoli is a bastioned fort in Kalkara, Malta, which was built by the Order of Saint John between 1670 and 1698. The fort occupies a promontory known as Gallows' Point and the north shore of Rinella Bay, commanding the entrance to the Grand Harbour along with Fort Saint Elmo. It is not only the largest fort in Malta but also the largest in Europe, and it has been on the tentative list of UNESCO World Heritage Sites since 1998, as part of the Knights' Fortifications around the Harbours of Malta.
Fort Saint Elmo is a star fort in Valletta, Malta. It stands on the seaward shore of the Sciberras Peninsula that divides Marsamxett Harbour from Grand Harbour, and commands the entrances to both harbours along with Fort Tigné and Fort Ricasoli. It is best known for its role in the Great Siege of Malta in 1565.
The Grand Harbour, also known as the Port of Valletta, is a natural harbour on the island of Malta. It has been substantially modified over the years with extensive docks, wharves, and fortifications.
Lei Yue Mun Park and Holiday Village is a holiday village located in the east of Shau Kei Wan, facing Lei Yue Mun, with an area of 22.97 hectares. It used to be Lyemun Barracks, barracks for the British soldiers stationed in Hong Kong prior to its conversion into a holiday village, the only holiday camp owned by the government in the urban districts of Hong Kong.
Cliffe Fort is a disused artillery fort built in the 1860s to guard the entrance to the Thames from seaborne attack. Constructed during a period of tension with France, it stands on the south bank of the river at the entrance to Cliffe Creek in the Cliffe marshes on the Hoo Peninsula in North Kent, England. Its location on marshy ground caused problems from the start and necessitated changes to its design after the structure begin to crack and subside during construction. The fort was equipped with a variety of large-calibre artillery guns which were intended to support two other nearby Thamesside forts. A launcher for the Brennan torpedo—which has been described as the world's first practical guided missile—was installed there at the end of the 19th century but was only in active use for a few years.
HMS St Christopher was a Coastal Forces training base of the Royal Navy operational during the Second World War and located in and around Fort William, Scotland.
John Holmes Jellett Officer of the Order of the British Empire (OBE), DSc, MA was a British civil engineer. Jellett started his career as a bridge and canal engineer before joining the Admiralty, where he specialised in docks. He made improvements to the Royal Navy dockyards and depots at Chatham, Singapore, Devonport, Gibraltar and Milford Haven in the 1930s. During the Second World War Jellett was responsible for works in Egypt and Malta as superintendent civil engineer for the Eastern Mediterranean. After service in the Mediterranean, he was superintending engineer for Mulberry Harbour B that supplied the allied forces in France after the Normandy Landings. Jellett was appointed an OBE for this work in late 1944. After the war he worked for the Southern Railway and then the British Transport Commission in Southampton Docks. Jellett served as president of the Institution of Civil Engineers in 1968–69.
Coastal defenceand coastal fortification are measures taken to provide protection against military attack at or near a coastline, for example, fortifications and coastal artillery. Because an invading enemy normally requires a port or harbour to sustain operations, such defences are usually concentrated around such facilities, or places where such facilities could be constructed. Coastal artillery fortifications generally followed the development of land fortifications, usually incorporating land defences; sometimes separate land defence forts were built to protect coastal forts. Through the middle 19th century, coastal forts could be bastion forts, star forts, polygonal forts, or sea forts, the first three types often with detached gun batteries called "water batteries". Coastal defence weapons throughout history were heavy naval guns or weapons based on them, often supplemented by lighter weapons. In the late 19th century separate batteries of coastal artillery replaced forts in some countries; in some areas these became widely separated geographically through the mid-20th century as weapon ranges increased. The amount of landward defence provided began to vary by country from the late 19th century; by 1900 new US forts almost totally neglected these defences. Booms were also usually part of a protected harbor's defences. In the middle 19th century underwater minefields and later controlled mines were often used, or stored in peacetime to be available in wartime. With the rise of the submarine threat at the beginning of the 20th century, anti-submarine nets were used extensively, usually added to boom defences, with major warships often being equipped with them through early World War I. In World War I railway artillery emerged and soon became part of coastal artillery in some countries; with railway artillery in coast defence some type of revolving mount had to be provided to allow tracking of fast-moving targets.
Camden Fort Meagher is a coastal defence fortification close to Crosshaven, County Cork, Ireland. Together with similar structures at Fort Mitchell, Fort Davis (Whitegate), and Templebreedy Battery, the fort was built to defend the mouth of Cork Harbour. Though originally constructed in the 16th century, the current structures of the fort date to the 1860s. Originally named Fort Camden and operated by the British Armed Forces, the fort was handed-over to the Irish Defence Forces in 1938. Renamed Fort Meagher in honour of Thomas Francis Meagher, it remained an Irish military installation until 1989 when the Irish Army handed the fort over to Cork County Council. It remained largely overgrown until 2010 when a group of local volunteers began restoration and development of the fort for heritage and tourism purposes. The fort was renamed Camden Fort Meagher and is now open seasonally to visitors, with exhibits on the fort's Brennan torpedo installation.
The fortifications of Malta consist of a number of walled cities, citadels, forts, towers, batteries, redoubts, entrenchments and pillboxes. The fortifications were built over hundreds of years, from around 1450 BC to the mid-20th century, and they are a result of the Maltese islands' strategic position and natural harbours, which have made them very desirable for various powers.
Cambridge Battery is a Victorian-era battery in Sliema, Malta. It is commonly referred to as Fort Cambridge, although it was never classified as a fort while in use. It originally contained an Armstrong 100-ton gun.
Fort Davis, is a coastal defence fortification close to Whitegate, County Cork, Ireland. Together with similar structures at Fort Mitchel, Fort Camden (Crosshaven), and Templebreedy Battery, the fort was built to defend the mouth of Cork Harbour. Though used as a fortification from the early 17th century, the current structures of the 74-acre site date primarily from the 1860s. Originally named Fort Carlisle and operated by the British Armed Forces, the fort was handed-over to the Irish Defence Forces in 1938, and renamed Fort Davis. The facility is owned by the Department of Defence, and is used as a military training site with no public access.
The St Elmo Bridge is a single-span arched truss steel footbridge leading from the foreshore of Fort Saint Elmo in Valletta, Malta, to the breakwater at the entrance of the Grand Harbour. It was constructed in 2011–12 to designs of the Spanish architects Arenas & Asociados. The bridge stands on the site of an earlier bridge which had been built in 1906 and which was destroyed during World War II in 1941. The original bridge had a similar design to the present one, but it had two spans instead of one.
The Royal Malta Artillery (RMA) was a regular artillery unit of the British Army prior to Malta's independence. It was formed in 1889, having been called the Royal Malta Fencible Artillery from 1861 until 1889.
The Battle of Grand Harbour, also known as Operazione MALTA-2, was an unsuccessful Italian raid against Allied shipping in the harbour of Valletta, Malta on the night of 25-26 July 1941 during World War II. Italian Regia Marina (RM) commando frogmen from the Decima Flottiglia MAS ("X-MAS") attempted to penetrate the harbour to attack British shipping. The attackers destroyed the St Elmo Bridge trying to enter the harbour before being driven off by fire from coastal defences. The Italians suffered heavy casualties; the entire X-MAS group was killed or captured.
British Army Royal Engineers 
