Fort Blockhouse

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Fort Blockhouse
Gosport, England
Fort Blockhouse, Gosport.jpg
Fort Blockhouse (centre) and the marina
Hampshire UK location map.svg
Red pog.svg
Fort Blockhouse
TypeFort, later submarine base
Site information
ConditionComplete
Site history
Built1431, various additions until 1960s
In use1431–1539 (as blockhouse)
1539–1956 (as battery)
1905–1998 (as submarine base)
1996–2020 (as training site)
2002- present (as RAMC barracks)
Battles/wars Siege of Portsmouth (1642)

Fort Blockhouse is a former military establishment in Gosport, Hampshire, England, and the final version of a complicated site. At its greatest extent in the 19th century, the structure was part of a set of fortifications which encircled much of Gosport. It is surrounded on three sides by water and provides the best view of the entrance to Portsmouth Harbour. It is unique in that it was built over five centuries from its original construction as a blockhouse in 1431 to the final addition of submarine base structures in the mid-1960s. Coastal fortification was abolished nationally in 1956, and the fort has not been used in a military capacity since 2021. [1]

Contents

The MoD plans to dispose of the site in 2025.

History

Early fortifications (1431–1667)

Fort Blockhouse from the water. Fort Blockhouse 03.jpg
Fort Blockhouse from the water.

Following the burning of Portsmouth during the Hundred Years' War, money was set aside in 1417 to provide protection for Portsmouth Harbour. A blockhouse was first built on the Gosport side of the harbour in 1431 after authorisation by Henry VI. A chain was strung from Blockhouse point to a similar tower in Portsmouth, which could be raised to prevent entry to the harbour by enemy ships.

The blockhouse was replaced in 1539 by an eight-gun battery under the orders of Henry VIII after his divorce from Catherine of Aragon. Blockhouse was supported by secondary fort to the south from 1545 to 1556, named Haselworth Castle, though this was abandoned only eleven years after construction. [2] A plan to move the dockyard from Portsmouth to Gosport in 1627 never came to fruition, though storehouses for the new docks were built on the site. In 1642, during the English Civil War, the fort was used to bombard Portsmouth, which was at the time under Royalist control.

Modernised fort (1667–1877)

The fortification was extensively reworked in 1667 when Bernard de Gomme installed new defences at the order of Charles II. Two towers, named James Fort and Charles Fort, were completed by 1679, though the full plans involved additional earthworks that were never constructed. [3]

An 18th-century view of Portsmouth from Fort Blockhouse Gezigt van de stad en haven van Portsmouth - btv1b53010608c.jpg
An 18th-century view of Portsmouth from Fort Blockhouse

An inspection in the early 18th century found that the defences had fallen into poor condition. In 1708 the fortifications were completely rebuilt, with 21 guns facing the sea and significant earthworks. The 1708 works are the oldest still present on the site. The defences to the north were expanded in 1757, in order to enclose the Weevil brewery, which in the preceding fifty years had become an important supply of beer for the navy. The fortifications from de Gomme's era were still present at the west side of the fort, and were in poor condition by that time. The Weevil estate was purchased in 1761 and the land was redeveloped into the Royal Clarence victualing yard. New defences were constructed for Gosport in 1778, with the bastioned Fort Monckton situated on the ground that had been occupied by Haselworth Castle in the Tudor era. [3]

Further renovations took place from 1797 to 1803, amid fears of French invasion. This created a line of bastions defending Gosport all the way from Blockhouse Point up to Forton Lake on the far side of the town, with French prisoners of war making up a part of the construction workforce.

South Casemates of 1845-48 (being the third reconfiguration of de Gomme's 21-gun battery). Fort Blockhouse (geograph 3348716).jpg
South Casemates of 1845–48 (being the third reconfiguration of de Gomme's 21-gun battery).

Much of fort Blockhouse was remodelled in 1813, with further modifications to the battery taking place in 1825 and adjustments to the bastion in 1845. The defences outside of Blockhouse point were however not effectively maintained, with James Fort and Charles Fort falling into ruin in the early 19th century. The defences were considered obsolete by the 1859 Royal Commission on the Defence of the United Kingdom. The stone parapet was reworked in 1863, and additional guns were added at the rear of the site.

Mining and submarine base (1877–1998)

Modern buildings within and beyond the Fort, including the prominent Submarine Escape Training Tower. Fort Blockhouse.jpg
Modern buildings within and beyond the Fort, including the prominent Submarine Escape Training Tower.

The Fort Blockhouse Submarine Mining Establishment was founded in 1877, with additional structures added to the Blockhouse complex including a crane and pier, along with a light rail system to move explosives. Additional administrative buildings were added in 1884, when the site also became home to the School of Submarine Miners. The pier was extended in 1888, and additional rooms continued to be added for storage and tests until 1891. The Portsmouth Militia Division, which had recently been performing experiments with torpedoes that could be launched from a coastal defence at Fort Monkton, also moved to Blockhouse in 1892 and remained until 1907. The two forts were linked with a narrow gauge railway, which also extended to the facilities in Stokes Bay which were still in use for this purpose. The railway survived into the early 20th century. [4]

Blockhouse was turned over to the Royal Navy in 1905 and, as HMS Dolphin, it became the home of the Royal Navy Submarine Service. The Napoleonic era defences that had extended out to loop around the west side of the town were removed, in order to facilitate transportation. Between the two world wars, the establishment expanded beyond the lines of the original fort on Blockhouse point however, and the prominent submarine escape tower was built in 1953, and opened in 1954. The need for such a training facility had been made apparent by the loss of HMS Truculent in 1950. [5] The battery of the fort was disarmed in 1956, and additional buildings were added to support submarine operations in the mid-1960s. [6] The end of the Cold War brought with it a reduction in defence requirements, with the threat of Soviet submarines having passed- and so in 1992 it was announced that the smaller submarine fleet would be leaving HMS Dolphin and moving west to HMNB Devonport. [6] The last submarine left Dolphin in 1994. HMS Dolphin was declared surplus to requirements in 1996 and Dolphin was formally decommissioned in 1998. [7]

Field hospital and training site (1996– present)

Part of the Blockhouse site became the Royal Defence Medical College in 1996, providing postgraduate education in the area. The venture was short lived however, with the college closing in 2002. [8] Although the submarine base was closed in 1998, the Royal Navy Submarine School (RNSMS) remained at the fort until 23 December 1999, and some training continued at Blockhouse for a further twenty years. The submarine school was relocated to HMS Raleigh in Cornwall, with pressurised training remaining at the Blockhouse facility until 2008. The Submarine Escape Training Tank (SETT) remained in service until it was closed in January 2020. [9]

33 Field Hospital disbanded on 1 December 2018, after 33 years’ existence. Fort Blockhouse closed as a military establishment in December 2021. [10]

Future

Planned disposal

In 2016, it was announced that Fort Blockhouse would be disposed of by the Ministry of Defence in 2020, as part of a wider package of reductions in defence estate. [11] [12] Surveys were undertaken from January to March 2020 to determine which structures at the site would become listed buildings, and major job cuts took place at the end of the year. [13] [14] The disposal date was later extended to at least 2023, [15] and once more to 2025. [16]

Related Research Articles

<span class="mw-page-title-main">Gosport</span> Coastal town in Hampshire, England

Gosport is a town and non-metropolitan borough, on the south coast of Hampshire, South East England. At the 2021 Census, its population was 81,952. Gosport is situated on a peninsula on the western side of Portsmouth Harbour, opposite the city of Portsmouth, to which it is linked by the Gosport Ferry. Gosport lies south-east of Fareham, to which it is linked by a Bus Rapid Transit route and the A32. Until the last quarter of the 20th century, Gosport was a major naval town associated with the defence and supply infrastructure of His Majesty's Naval Base (HMNB) Portsmouth. As such over the years extensive fortifications were created.

<span class="mw-page-title-main">Fortifications of Portsmouth</span>

The fortifications of Portsmouth are extensive due to its strategic position on the English Channel and role as home to the Royal Navy. For this reason, Portsmouth was, by the 19th century, one of the most fortified cities in the world. The fortifications have evolved over the centuries in response to changes in tactics and technology and the area defended has increased. While the first defences focused on Portsmouth harbour, in step with the fortifications of Gosport, later defensive structures protected the whole of Portsea Island and an increasing distance inland. At the same time, the fortifications of Portsmouth and Gosport became part of the wider fortifications of the Solent. Old Portsmouth, on the southwest corner of Portsea Island, has been walled for much of its history.

<span class="mw-page-title-main">Fort Gilkicker</span>

Fort Gilkicker is a historic Palmerston fort built at the eastern end of Stokes Bay, Gosport, Hampshire England to dominate the key anchorage of Spithead. It was erected between 1863 and 1871 as a semi-circular arc with 22 casemates, to be armed with five twelve-inch guns, seventeen ten-inch guns and five nine-inch guns. The actual installed armament rather differed from this. In 1902 the RML guns were replaced by two 9.2-inch and two six-inch BL guns, and before the First World War the walls were further strengthened with substantial earthwork embankments. The fort was disarmed in 1956 and used for storage until 1999, and is currently in a state of disrepair.

<span class="mw-page-title-main">Royal Citadel, Plymouth</span>

The Royal Citadel in Plymouth, Devon, England, was built in the late 1660s to the design of Sir Bernard de Gomme. It is at the eastern end of Plymouth Hoe overlooking Plymouth Sound, and encompasses the site of the earlier fort that had been built in the time of Sir Francis Drake. The citadel site is a Scheduled Monument and many of the buildings within are Grade II Listed.

<span class="mw-page-title-main">Portsmouth Harbour</span> Natural harbour in Hampshire, England

<span class="mw-page-title-main">HMNB Portsmouth</span> British Royal Navy base

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<span class="mw-page-title-main">Stokes Bay</span>

Stokes BaySZ 590 980) is an area of the Solent that lies just south of Gosport, between Portsmouth and Lee-on-the-Solent, Hampshire. There is a shingle beach with views of Ryde and East Cowes on the Isle of Wight to the south and Fawley to the south west. The settlement of Alverstoke is close by.

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<span class="mw-page-title-main">HMS Dolphin (shore establishment)</span> Former shore establishment of the Royal Navy

The seventeenth Royal Navy vessel to be named HMS Dolphin was the Royal Naval shore establishment sited at Fort Blockhouse in Gosport. Dolphin was the home of the Royal Navy Submarine Service from 1904 to 1999, and location of the Royal Navy Submarine School.

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<span class="mw-page-title-main">Alverstoke</span> Human settlement in England

Alverstoke is a village in the borough of Gosport, on the south coast of Hampshire, England. It stretches east–west from Fort Blockhouse, Haslar to Browndown Battery, and is centred 0.5 miles (0.80 km) east of the shore of Stokes Bay and near the head of a creek which extends a mile westward from Portsmouth Harbour.

<span class="mw-page-title-main">Fort Rowner</span> Palmerston Fort in Gosport

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<span class="mw-page-title-main">Burrow Island</span> Tidal island in Gosport overlooking Portsmouth

Burrow Island is a tidal island in Gosport, United Kingdom.

<span class="mw-page-title-main">Fort Monckton</span>

Fort Monckton is a historic military fort on the south-east shoreline of the Gosport peninsula, Hampshire. Built on the ruins of Haselworth Castle to protect Portsmouth Harbour at the start of the American War of Independence, it was rebuilt in the 1880s as a Palmerston fort.

<span class="mw-page-title-main">Fortifications of Plymouth</span>

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<span class="mw-page-title-main">Forton Barracks</span>

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References

  1. Fort Blockhouse History Archived 2007-01-05 at the Wayback Machine from www.gosport.info
  2. "My Gosport guide to the History of Gosport Hampshire". www.mygosport.org.
  3. 1 2 "Fortified Places > Fortresses > Gosport". www.fortified-places.com. Archived from the original on 9 January 2020. Retrieved 29 July 2020.
  4. "Fort Gilkicker: Stokes Bay: Fort Monckton and the Submarine Mining Establishment". www.fortgilkicker.co.uk.
  5. "Haslar Peninsula Conservation Area Appraisal". Gosport Borough Council. Archived from the original on 9 February 2019. Retrieved 8 February 2019.
  6. 1 2 Historic England. "Fort Blockhouse (1001873)". National Heritage List for England . Retrieved 6 September 2021.
  7. "Fort Blockhouse" (PDF). Victorian Forts. Retrieved 1 September 2021.
  8. "Farewell to medical college at Blockhouse". Navy News. 1 May 2002. Retrieved 6 September 2021.
  9. "Iconic Gosport tower is used by submariners for the final time". www.portsmouth.co.uk.
  10. "History of 33 Field Hospital - 33_Fd_Hosp.pdf" (PDF).
  11. "A Better Defence Estate" (PDF). Ministry of Defence. Retrieved 1 September 2021.
  12. "Gosport military base to be sold off by government by 2026, new MoD estate plan reveals". www.portsmouth.co.uk.
  13. "Workers at HMS Sultan, HMS Excellent and Fort Blockhouse 'face pay cut or sacking'". www.portsmouth.co.uk.
  14. "Heritage Action Zone (HAZ) – Gosport Borough Council". www.gosport.gov.uk.
  15. "MOD Confirms Changes To Base Closure Plans". Forces News. 19 November 2020. Retrieved 27 November 2020.
  16. "Disposal database: House of Commons report" . Retrieved 12 July 2022.

50°47′24″N1°06′50″W / 50.79000°N 1.11389°W / 50.79000; -1.11389