Where Brunei Meets the Sea
On 23 February 2014, a 172-metre car carrier called Trans Future 2 drifted into a Royal Brunei Navy vessel while in port at Muara Naval Base. The collision was minor, but it captured something essential about this place: even in a sultanate of just 450,000 people, the naval base at Muara hums with traffic -- warships, cargo vessels, and the occasional visiting helicopter bearing the Sultan himself. Situated four kilometres from Muara Town, near the mouth of the Brunei River where it spills into Brunei Bay, the base serves as headquarters for a navy that punches well above its size, hosting international exercises with the United States and patrolling waters contested by far larger powers in the South China Sea.
From Occupation to Independence
Long before the Royal Brunei Navy existed, the Japanese Imperial Navy recognized the strategic value of this coastline. During World War II, Japanese forces used Muara as a naval base until the Australian 9th Division liberated the area during the Battle of North Borneo. For decades after the war, Brunei's maritime capability remained modest. The Boat Section of the Royal Brunei Malay Regiment relocated to Muara in 1974, establishing the First Sea Battalion at the site that would become the modern naval base. The early years were lean. Brunei gained full independence from Britain in 1984, and the fledgling navy gradually built its presence. By 1989, a U.S. Navy warship berthed at the base, marking Muara's entry into the network of international naval cooperation that would define its future role.
A Small Navy's Big Ambitions
Brunei's wealth from oil and gas has funded ambitions that exceed what its small population might suggest. In 1991, the government ordered three corvettes intended for Muara, but a contractual dispute with the manufacturer meant that none of the ships were ever commissioned into service -- a costly setback that underscored the challenges a small state faces in naval procurement. The base itself fared better. A major upgrade in 1997, costing B$140 million, added a 314-metre quay, a shiplift for vessel maintenance, and renovated existing facilities. Between 2007 and 2012, ammunition and explosive storage bunkers rose at nearby Kampong Kapok. Another B$44.6 million project launched in July 2011 provided new accommodations for personnel, workshops, and technical buildings. The investment reflected a strategic calculation: in a region where South China Sea territorial disputes involve China, Vietnam, the Philippines, and Malaysia, even a small navy needs credible infrastructure.
Cooperation Afloat
The annual Cooperation Afloat Readiness and Training exercise -- CARAT -- has become the signature event at Muara Naval Base, binding Brunei's navy to the United States in a partnership that dates back decades. The 20th annual CARAT kicked off at the base on 11 November 2014. The 24th edition in November 2018 expanded into exercises in the South China Sea itself. By October 2019, the 25th CARAT once again launched from Muara's quays. During the 2011 Brunei Darussalam International Defence Exhibition, BRIDEX, the Royal Brunei Navy celebrated its 46th anniversary at the base, hosting twenty-four warships from ten countries. Sultan Hassanal Bolkiah has landed his personal Sikorsky S-70 helicopter at the base to witness naval exercises firsthand, a reminder that in Brunei, the line between head of state and commander-in-chief is remarkably short.
The River's Mouth
Today, Muara Naval Base houses three divisions: Operations, Administrative, and a range of supporting facilities that reveal the self-contained world of a modern military installation. There is a Naval Training Centre with a War Training Room and fire-fighting simulator. A Learning Management Centre is operated by the Royal Brunei Training Services. The base has its own primary school and its own mosque. The Multi National Coordination Centre handles the logistics of joint exercises with foreign navies. A surau named Al-Huda serves the daily prayers of base personnel. Standing at the edge of Brunei Bay, where the river meets the sea and the shipping lanes run north toward the contested waters of the South China Sea, the base occupies a position that every navy in the region's history has coveted. The Japanese built on it. The Australians liberated it. The Bruneis inherited it. And now, in the careful diplomacy of annual exercises and visiting warships, they work to ensure it remains theirs.
From the Air
Located at approximately 5.03N, 115.08E, about 4 km from Muara Town in the Brunei-Muara District. The naval base sits near the mouth of the Brunei River where it flows into Brunei Bay. Military quays and vessels are visible from 2,000-4,000 feet. Muara Besar Island lies to the east across the channel. Brunei International Airport (WBSB) is approximately 20 km to the southwest. Nearby landmarks include Muara Port and the Pelumpong Spit. The South China Sea coastline extends to the north.