His Majesty's Naval Base, Singapore, also Her Majesty's Naval Base, Singapore (HMNB Singapore), alternatively known as the Singapore Naval Base, Sembawang Naval Base and HMS Sembawang, was situated in
Sembawang
Sembawang ( ) is a Planning Areas of Singapore, planning area and New towns of Singapore, residential town located in the North Region, Singapore, North Region of Singapore. Sembawang planning area is bordered by Simpang to the east, Mandai to t ...
at the
northern tip of Singapore and was both a
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
shore establishment
A stone frigate is a naval establishment on land.
'Stone frigate' is an informal term which has its origin in Britain's Royal Navy (RN), after its use of Diamond Rock, an island off Martinique, as a ' sloop of war' to harass the French in ...
and a cornerstone of British defence policy (the
Singapore strategy
The Singapore strategy was a naval defence policy of the United Kingdom that evolved in a series of Military operation plan, war plans from 1919 to 1941. It aimed to deter aggression by Japan by providing a base for a fleet of the Royal Navy in ...
) in the
Far East
The Far East is the geographical region that encompasses the easternmost portion of the Asian continent, including North Asia, North, East Asia, East and Southeast Asia. South Asia is sometimes also included in the definition of the term. In mod ...
between the
World Wars
A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World War I (19 ...
. From 1921 to 1941 it was a
China Station base, from 1941 to 1945 a repair facility for the Imperial Japanese Navy and from 1945 to 1958 a
Far East Fleet base. Today, it is a commercial dockyard but British military activity still exists at the
British Defence Singapore Support Unit
The British Defence Singapore Support Unit (BDSSU) is a British naval facility located in Sembawang, Singapore. A remnant of a larger naval base, known as HMNB Singapore, the facility provides fuel and other supplies to Royal Navy ships in the re ...
(BDSSU).
History
Through the 19th century, the British Government relied on four
Imperial fortress
Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, Lord Salisbury described Malta, Gibraltar, Bermuda, and Halifax as Imperial fortresses at the 1887 Colonial Conference, though by that point they had been so designated for decades. Later histor ...
colonies as primary bases for the Royal Navy and British Army for control of the World's oceans. These were
Bermuda
Bermuda is a British Overseas Territories, British Overseas Territory in the Atlantic Ocean, North Atlantic Ocean. The closest land outside the territory is in the American state of North Carolina, about to the west-northwest.
Bermuda is an ...
and
Halifax, Nova Scotia (military control of the latter was handed to the Canadian militia following
Canadian Confederation
Canadian Confederation () was the process by which three British North American provinces—the Province of Canada, Nova Scotia, and New Brunswick—were united into one federation, called the Name of Canada#Adoption of Dominion, Dominion of Ca ...
in 1867, and naval control to the
Royal Canadian Navy
The Royal Canadian Navy (RCN; , ''MRC'') is the Navy, naval force of Canada. The navy is one of three environmental commands within the Canadian Armed Forces. As of February 2024, the RCN operates 12 s, 12 s, 4 s, 4 s, 8 s, and several auxiliary ...
after 1905, along with
Esquimalt Royal Naval Dockyard, which had been the main base of the
Pacific Station
The Pacific Station was created in 1837 as one of the geographical military formations into which the Royal Navy divided its worldwide responsibilities. The South America Station was split into the Pacific Station and the South East Coast o ...
) in the North Atlantic, and
Gibraltar
Gibraltar ( , ) is a British Overseas Territories, British Overseas Territory and British overseas cities, city located at the southern tip of the Iberian Peninsula, on the Bay of Gibraltar, near the exit of the Mediterranean Sea into the A ...
and
Malta
Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...
. As it was presumed that the only navies that could challenge the Royal Navy were those of European powers, no base equivalent to an Imperial fortress had been constructed outside of the Atlantic and its connected seas. This was despite the growing threats of the Pacific fleets of the Russian Empire and the United States during the 19th Century. After the
Great War
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, the British Government devoted significant resources into building a naval base on
Singapore Island, where
the capital
''The Capital'' (also known as ''Capital Gazette'' as its online nameplate and informally, while the Sunday edition is called ''The Sunday Capital'') is a daily newspaper published by Capital Gazette Communications in Annapolis, Maryland, to ...
of the
Straits Settlements
The Straits Settlements () were a group of British territories located in Southeast Asia. Originally established in 1826 as part of the territories controlled by the British East India Company, the Straits Settlements came under control of the ...
was located, as a deterrent to the increasingly ambitious
Japanese Empire
The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the Japanese nation state that existed from the Meiji Restoration on January 3, 1868, until the Constitution of Japan took effect on May 3, 1947. From 1910 to ...
with its growing fleet. Britain lacked a naval '
Imperial fortress
Robert Gascoyne-Cecil, 3rd Marquess of Salisbury, Lord Salisbury described Malta, Gibraltar, Bermuda, and Halifax as Imperial fortresses at the 1887 Colonial Conference, though by that point they had been so designated for decades. Later histor ...
' in the broad region of Asia, the Indian Ocean, and the Pacific Ocean. Instead, the
British Empire
The British Empire comprised the dominions, Crown colony, colonies, protectorates, League of Nations mandate, mandates, and other Dependent territory, territories ruled or administered by the United Kingdom and its predecessor states. It bega ...
relied on the squadron of the Bermuda based
America and West Indies Station, utilising the Panama Canal after its 1914 completion, to patrol the western Atlantic and the eastern Pacific, while vessels based in
Malta
Malta, officially the Republic of Malta, is an island country in Southern Europe located in the Mediterranean Sea, between Sicily and North Africa. It consists of an archipelago south of Italy, east of Tunisia, and north of Libya. The two ...
in the
Mediterranean Sea
The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...
could project naval and military force to the Indian and western Pacific oceans via the
Suez Canal
The Suez Canal (; , ') is an artificial sea-level waterway in Egypt, Indo-Mediterranean, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia (and by extension, the Sinai Peninsula from the rest ...
, which had been completed in 1869. In light of the rising threat of the
Imperial Japanese Navy
The Imperial Japanese Navy (IJN; Kyūjitai: Shinjitai: ' 'Navy of the Greater Japanese Empire', or ''Nippon Kaigun'', 'Japanese Navy') was the navy of the Empire of Japan from 1868 to 1945, Potsdam Declaration, when it was dissolved followin ...
(IJN), this was no longer adequate.

Originally announced in 1923, the construction of the base proceeded slowly at
Sembawang
Sembawang ( ) is a Planning Areas of Singapore, planning area and New towns of Singapore, residential town located in the North Region, Singapore, North Region of Singapore. Sembawang planning area is bordered by Simpang to the east, Mandai to t ...
until the Japanese invasion of
Manchuria
Manchuria is a historical region in northeast Asia encompassing the entirety of present-day northeast China and parts of the modern-day Russian Far East south of the Uda (Khabarovsk Krai), Uda River and the Tukuringra-Dzhagdy Ranges. The exact ...
in 1931. It was completed in 1938, at a staggering cost of £60 million – equivalent to £2½ billion in 2006. The base covered and had what was then the largest dry dock in the world, the third-largest floating dock, and enough fuel tanks to support the entire
Royal Navy
The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
for six months.
It was defended by
15-inch naval guns stationed at
Johore battery,
Changi
Changi ( ) is a planning area located in the geographical region of Tanah Merah in the East Region of Singapore. Sharing borders with Pasir Ris and Tampines to the west, Changi Bay to the southeast, the South China Sea to the east and the ...
, and at
Buona Vista Battery. Other important batteries of smaller calibre were located at
Fort Siloso,
Fort Canning
Fort Canning Hill, or simply known as Fort Canning, is a prominent hill, about high, in the southeast portion of Singapore, within the Central Area that forms Singapore's central business district.
The hill has a long history intertwined wi ...
, and
Labrador
Labrador () is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province's area but is home to only 6% of its populatio ...
. Air defence relied on the
Royal Air Force
The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
(RAF) airfields at
RAF Tengah and
RAF Sembawang.
Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 1874 – 24 January 1965) was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 (Winston Churchill in the Second World War, ...
touted it as the "
Gibraltar
Gibraltar ( , ) is a British Overseas Territories, British Overseas Territory and British overseas cities, city located at the southern tip of the Iberian Peninsula, on the Bay of Gibraltar, near the exit of the Mediterranean Sea into the A ...
of the East".
The base was renamed from HMS ''Terror'' to HMS ''Sultan'' on 1 January 1940 to acknowledge the proximity of the nine sultanates on the
Malay Peninsula
The Malay Peninsula is located in Mainland Southeast Asia. The landmass runs approximately north–south, and at its terminus, it is the southernmost point of the Asian continental mainland. The area contains Peninsular Malaysia, Southern Tha ...
.
After
the fall of
Malaya on 31 January 1942, Singapore came within range of the artillery guns of the
Twenty-Fifth Army of the
Imperial Japanese Army
The Imperial Japanese Army (IJA; , ''Dai-Nippon Teikoku Rikugun'', "Army of the Greater Japanese Empire") was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during th ...
(IJA), who were positioned in
Johor
Johor, also spelled Johore,'' is a States and federal territories of Malaysia, state of Malaysia in the south of the Malay Peninsula. It borders with Pahang, Malacca and Negeri Sembilan to the north. Johor has maritime borders with Singapore ...
within sight of the base. The IJA was poised to
capture Singapore within a
fortnight
A fortnight is a unit of time equal to 14 days (two weeks). The word derives from the Old English term , meaning "" (or "fourteen days", since the Anglo-Saxons counted by nights).
Astronomy and tides
In astronomy, a ''lunar fortnight'' is hal ...
. The base was subsequently captured, largely intact, by units of the advancing IJA and became the IJN No. 101 Repair Facility through to the end of the
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
during which time it was used by all 3
Axis powers
The Axis powers, originally called the Rome–Berlin Axis and also Rome–Berlin–Tokyo Axis, was the military coalition which initiated World War II and fought against the Allies of World War II, Allies. Its principal members were Nazi Ge ...
. It was used by Italian cargo-carrying submarines until the Italian Armistice, and by German cargo-carrying submarines until the German surrender.
With the surrender of Japan in August 1945,
control of the naval base and Singapore was reverted to British and Commonwealth Forces in September 1945, when allied units of
South East Asia Command under
Lord Louis Mountbatten started to arrive in Singapore.
In line with the Royal Navy's tradition of naming their respective naval base and dockyard, the accommodation barracks adjacent to the base became known as
HMS ''Terror'' (from 1945 to 1971) in honour of , an armed with twin
15-inch guns, which was based at one time in Singapore before the war. Since 1972, part of the compound is now occupied by the
Republic of Singapore Navy
The Republic of Singapore Navy (RSN) is the Naval warfare, maritime Military branch, service branch of the Singapore Armed Forces (SAF) responsible for defending the country against any seaborne threats and as a guarantor of its sea lines of ...
's
Naval Diving Unit (NDU). During the 1970s and 1980s, part of this former British naval base became the Singapore Armed Forces' Infantry Training Depot that served to provide a three-month-long basic military training (BMT) course to mostly national service recruits, and the premises continued the legacy of HMS ''Terror'' by being popularly referred to as "Terror Camp" .
Continued Commonwealth presence
With the
complete withdrawal of British forces from Singapore in 1971, the Naval Base has since been handed over to the
Singapore government, which in 1968 converted it into a commercial dockyard (as Sembawang Shipyard, now part of
Singapore Exchange
Singapore Exchange Limited (SGX Group) is a Singapore-based exchange conglomerate, operating Equity (finance), equity, fixed income, currency and commodity markets. It provides a range of listing, trading, clearing, settlement, depository and ...
-
listed SembCorp Marine
Seatrium Limited provides innovative engineering solutions to the global offshore, marine and energy industries. Headquartered in Singapore, the Group has over 60 years of track record in the design and construction of rigs, floaters, offshore p ...
).
After the short term
ANZUK arrangement was terminated (started in 1971 and ended in 1974),
New Zealand Force South East Asia
New Zealand Force South East Asia (NZFORSEA) (1974–1989) comprised the elements of the Royal New Zealand Navy, New Zealand Army and Royal New Zealand Air Force. Much of the New Zealand military left Singapore as part of operation Kupe in 1989, ...
(NZFORSEA) was created with the HQ being sited at the Stores Basin area adjacent to the current Sembawang Naval Basin. NZFORSEA consisted of
1 Royal New Zealand Infantry Regiment (RNZIR), which was based at
Dieppe Barracks near
Yishun New Town, No. 141 Flight of
Royal New Zealand Air Force
The Royal New Zealand Air Force (RNZAF; ) is the aerial warfare, aerial military service, service branch of the New Zealand Defence Force. It was formed initially in 1923 as a branch of the New Zealand Army, being known as the New Zealand Perm ...
(RNZAF), with its
Bell UH-1D/H Hueys based at
Sembawang Air Base and frequent deployments of
Royal New Zealand Navy
The Royal New Zealand Navy (RNZN; ) is the maritime arm of the New Zealand Defence Force. The fleet currently consists of eight ships. The Navy had its origins in the Naval Defence Act 1913, and the subsequent acquisition of the cruiser , whi ...
(RNZN) frigates. This was the last major foreign military presence based in Singapore. Total military strength at the time stood at 850 with some 700 dependents. Under the auspices of the
Five Power Defence Arrangements (FPDA), NZFORSEA took over the Royal Navy married quarters and billets, while the Installations Auxiliary Police Force (IAPF) was formed, the small police force was staffed by Singaporeans but commanded by an NZ officer to provide security to the whole area. This security blanket covered the British, UK and Australian facilities and personnel. When NZFORSEA withdrew from Singapore in 1989, it was replaced by the smaller NZ Defence Support Unit, the South East Asia (NZDSU SEA), with the IAPF still providing security to other nations including the US facilities and personnel.
The British
Ministry of Defence (MoD) continues to maintain a small logistics base at Sembawang wharf to control most of the foreign military activities there, which includes repair, refuel and resupply for ships of the Australian, British and New Zealand navies as well as those from other
Commonwealth countries
The Commonwealth of Nations, often referred to as the British Commonwealth or simply the Commonwealth, is an international association of 56 member states, the vast majority of which are former territories of the British Empire from which i ...
under the auspices of FPDA.
[Three man detachment under the RNLO from the Defence Geographic Centre, Defence Fuels Group and the Royal Navy](_blank)
/ref>
American presence
As part of a 1990 agreement (concluded in 1992) between Singapore and the United States, American military forces (primarily naval
A navy, naval force, military maritime fleet, war navy, or maritime force is the branch of a nation's armed forces principally designated for naval and amphibious warfare; namely, lake-borne, riverine, littoral, or ocean-borne combat operatio ...
and air force
An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
) have been making use of Sembawang's base facilities. The Commander, Logistics Group Western Pacific has been headquartered in Sembawang since 1992, providing logistic support for the US 7th Fleet in its operations in the Pacific and Southeast Asia. The United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and Admiralty law, law enforcement military branch, service branch of the armed forces of the United States. It is one of the country's eight Uniformed services ...
, Marine Inspection Detachment (MIDET) Singapore is also a tenant.
Apart from the US naval presence, the United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
has its administration, logistics and support component for the 497th Combat Training Squadron being based there, while the squadron's flight operations are based at Paya Lebar Air Base.
Access to Indian Navy ships
Since 2002, Singapore has granted the Indian Navy
The Indian Navy (IN) (ISO 15919, ISO: ) is the Navy, maritime and Amphibious warfare, amphibious branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of the Naval Staff (India), Chief ...
in principle access to Sembawang Port and Indian patrol boats escorting American naval ships through the Straits of Malacca
The Strait of Malacca is a narrow stretch of water, long and from wide, between the Malay Peninsula to the northeast and the Indonesian island of Sumatra to the southwest, connecting the Andaman Sea (Indian Ocean) and the South China Sea (Pa ...
.
Installations
Admiralty IX Floating Dry Dock
Admiralty Floating Dock No.9, a large floating dry dock, the third-largest in the world at the time of its construction, was located at the base. It was used by the aircraft carrier for a refit in 1939. At the time, the dry dock was described as having been floated from England to Singapore 10 years before.
King George VI Graving Dock
The graving dock
A dry dock (sometimes drydock or dry-dock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, ...
was completed in February 1938 and was more than in length and was the largest dry dock in the world at the time.[''The Times'', 15 February 1938 ] With the impending capture of Singapore by the Imperial Japanese Army in 1942, the dry dock gates were blown off and machinery destroyed. The dock was subsequently repaired and used throughout the war and was subjected to Allied air attacks to disable the dry dock in late 1944 and early 1945.
Senior officer commanding
Captain-in-Charge, Singapore
Modern sources give the title "Captain-in-Charge" to the senior officer at Singapore Naval Base from 1921 to 1942, including flag officers. However, contemporary sources state that the official title wasn't granted until 1931, when Captain Birkett took on the role.
Flag Officer, Malaya and Forward Areas
Included:
Flag Officer, Malayan Area
Included:
See also
* Japanese occupation of Singapore
, officially , was the name for Colony of Singapore, Singapore when it was occupied and ruled by the Empire of Japan, following the fall and surrender of British military forces on 15 February 1942 during World War II.
The Japanese military ...
* Bombing of Singapore (1944–1945)
The Bombing of Singapore (1944–1945) was a military campaign conducted by the Allies of World War II, Allied air forces during World War II. United States Army Air Forces (USAAF) long-range bomber units conducted 11 air raids on Japanese-occup ...
* British military history
* British Far East Command
* Eastern Fleet
* Far East Strategic Reserve
* ANZUK
* New Zealand Force South East Asia
New Zealand Force South East Asia (NZFORSEA) (1974–1989) comprised the elements of the Royal New Zealand Navy, New Zealand Army and Royal New Zealand Air Force. Much of the New Zealand military left Singapore as part of operation Kupe in 1989, ...
* SembCorp Marine
Seatrium Limited provides innovative engineering solutions to the global offshore, marine and energy industries. Headquartered in Singapore, the Group has over 60 years of track record in the design and construction of rigs, floaters, offshore p ...
* 497th Combat Training Squadron
* Task Force 73/Commander, Logistics Group Western Pacific
References
;Notes
;Bibliography
* Morris, James. ''Farewell the Trumpets''. Penguin Books, 1979.
;Further reading
* W. David McIntyre. ''The Rise and Fall of the Singapore Naval Base, 1919–1942''. Shoe String Pr Inc, January 1980. / 978-0208018359
* James Neidpath. ''Singapore Naval Base and the Defence of Britain's Eastern Empire, 1919–1941''. Clarendon Pr, January 1981. / 978-0198224747
External links
HM Naval Base Singapore: personal memoir
* ttps://web.archive.org/web/20111008003435/http://heritagetrails.sg/content/3020/Former_Singapore_Naval_Base.html Singapore National Heritage Board: Singapore Naval base
{{Authority control
Military of Singapore under British rule
World War II sites in Singapore
Royal Navy bases outside the United Kingdom
World War II sites in British Malaya
Singapore–United Kingdom military relations