Bovisand

Frobisher Battery is a former gun battery at Staddon Heights, Plymouth, Devon. The original battery at the site, Twelve Acre Brake Battery, was completed in 1867 with positions for three guns. In 1888–1892, a new battery was built on the site, and renamed Frobisher Battery in 1890. It was armed with one RML 12.5-inch 38-ton gun, which was intended to be used to bombard enemy ships attempting to enter Plymouth Sound.The battery was disarmed in 1903, and later infilled with earth during the late 20th century. The site is now overgrown, but much of the battery survives as a buried feature and is protected as a scheduled monument.

Fort Bovisand is a fort in Devon, England near the beach of Bovisand. It was built as a result of the Royal Commission on the Defence of the United Kingdom which reported in 1860. It is located on the mainland to defend the entrance of Plymouth Sound, at the narrows opposite the east end of Plymouth Breakwater. The fort is beside Bovisand harbour.

Brownhill Battery is a former gun battery at Staddon Heights, Plymouth, Devon. It was one of a number of Plymouth fortifications to be recommended by the Royal Commission on the Defence of the United Kingdom in 1859. Construction began in 1861, at the same time as Staddon Fort and other defensive works at Staddon Heights. The battery was completed by 1868, but was left unarmed.The battery was designed with a five-sided earthwork rampart containing a number of gun emplacements, with a ditch spanning the front. The west side of the battery is protected by a gorge wall with loopholes. In 1875, eight RML 64-pounder 64 cwt guns were assigned to the battery, but stored at Staddon Fort. By 1885, the battery was armed with six RML 8-inch howitzers. The battery is believed to have ceased use around World War I. The site is now overgrown and is used for agricultural purposes, but much of the battery remains intact and is protected as a scheduled monument.

Plymouth Sound, Shores and Cliffs is a Site of Special Scientific Interest (SSSI) around the Plymouth Sound, a large area of water where the River Plym and Tamar meet. It stretches across the two ceremonial counties of Devon and Cornwall and the unitary authority area of Plymouth. It contains fossils of plants and sea creatures and its cliffs show a timeline of the Middle to Early Devonian period hundreds of millions of years ago

Lentney Battery is a former 20th-century gun battery, built in 1905 as one of three 6-inch gun batteries to defend the Eastern approaches to Plymouth Sound, for the defence of the Royal Naval Dockyard at Devonport. It shared accommodation with the nearby Renney Battery. It was armed with two 6-inch Mark VII breechloading naval guns In 1914 a blockhouse and unclimbable fence was added. The battery was manned by the Devonshire royal Garrison Artillery. In 1930 the battery was disarmed, but later re-armed during the Second World War. After the Second World War the battery was used as one of the practice batteries for the Coast Artillery Training School. On the dissolution of coast artillery in the United Kingdom in 1956 the battery was disarmed. It was released by the military in 1991, and became Grade II listed the following year.

Staddon Fort is a 19th-century fort, built as a result of the Royal Commission on National Defence of 1859. Part of an extensive scheme known as Palmerston Forts, after the prime minister who championed the scheme, it was built to defend the landward approaches to the east of Plymouth, as an element of the plan for the defence of the Royal Naval Dockyard at Devonport. Designed by Captain (later Maj General) Edmund Frederick Du Cane, it was built by George Roach and Company. The fort was connected by a military road to the nearby Stamford Fort, Watch House Battery and Brownhill Battery. It was designed to be armed with 34 guns and 6 mortars. To house the fort's garrison a barrack block for 250 men was built within the rear section of the fort.By the early 1900s the fort had become obsolete as a defensive position and was disarmed. It remains in use by the Royal Navy as a communications centre. Along with a number of other parts of the Staddon Heights defences, it became a scheduled monument in 1969.

Lord Howard's Battery is a former gun battery built in 1908–09 to defend the approach to HMNB Devonport through Plymouth Sound and Jennycliff Bay.The battery was armed with two BL 6-inch Mk VII guns, which were removed prior to World War II. The battery was recommissioned in 1941 with the installation of two guns of the same type, and these remained in place until the battery's closure in 1946.After its closure, the battery was used as a caravan site. During the late 20th-century, the battery and its surrounding area was transformed into a public space by Plymouth City Council. The two gun emplacements and magazine were infilled with earth, and all ancillary buildings were demolished. The features that remain visible include the concrete aprons of the emplacements and a concrete parapet. Adjacent to Jennycliff Cafe is the battery's former blockhouse.

Watch House Battery is a former 19th-century gun battery, built as one of a number of batteries to defend the Eastern approaches to Plymouth Sound, for the defence of the Royal Naval Dockyard at Devonport. The battery was originally built as a small pentagonal redoubt with emplacements for five guns. By 1893 it was armed with two 64 Pounder Rifled Muzzle Loading Guns. In 1901 the battery was reconstructed for two 6-inch Mark VII breech loading guns with the work being completed in 1903. During the First World War the battery was manned by the Devonshire Royal Garrison Artillery.After the Second World War the battery remained armed until the dissolution of coast artillery in the United Kingdom in 1956 when it was disarmed. It was released by the military and subsequently used as a children's activity centre for some years. It was Grade II listed in 1969.

Jennycliff Bay (often used interchangeably with Jennycliff) is a bay on the South West Coast Path in Plymouth, Devon, England. It is managed by Plymouth City Council and is both designated a County Wildlife Site (CWS) and part of the Site of Special Scientific Interest (SSSI) known as Plymouth Sound, Shores and Cliffs. From its upper grassy area, the bay overlooks Mount Batten and Plymouth Sound.

Hooe is a suburb of Plymstock, Plymouth in the English county of Devon.

Glen Strathallan was a British ship originally built as a trawler, but then converted into a private yacht, which also served in the Royal Navy in World War II. She was finally scuttled in 1970 at Plymouth Sound, England as a diver training site.

Royal Air Force Mount Batten, or more simply RAF Mount Batten, is a former Royal Air Force station and flying boat base at Mount Batten, a peninsula in Plymouth Sound, Devon, England, UK. Originally a seaplane station opened in 1917 as a Royal Navy Air Service Station Cattewater it became RAF Cattewater in 1918 and in 1928 was renamed RAF Mount Batten. The base is named after Captain Batten, a Civil War commander who defended this area at the time, with the Mountbatten family motto In Honour Bound taken as the station's motto.Today, little evidence of the RAF base remains apart from several memorials, some aviation-related road names, the main slipway and two impressive Grade II listed F-type aeroplane hangars dating from 1917.