The Gun Director Tower at Siloso Point. Emplaced at the foot of the Tower is a Twin 6-Pounder Gun.
Fort Siloso
Siloso Point Underground Complex and Gun Emplacement.
6-Inch BL Battery
The original name for Siloso Point was ‘Sarang Rimau’, or ‘Tiger’s Lair’, as tigers were reputed to have once roamed in the area. The underground complex at the Point is often incorrectly described as a tunnel complex, even in the Fort’s literature. There are no real tunnels at the Fort.
The Underground Complex and Gun Emplacement at Siloso Point were constructed in two widely separated stages, The first when the Fort was built. The Victorian Engineers, who constructed the first underground complex knew that they needed to protect the electrical generating plant. This was was required to detonate the string on mines laid across the entrance to Keppel Harbour from incoming fire. 
What better place to put it than underground? There it would be as safe as possible. An extension to the complex was constructed during the 1930s upgrading of the Fort. This included the gun emplacement at the tip of Siloso Point.
An 1885 plan of the area is shown left. The Electric Light Emplacement is shown as being temporary, however it also also appears on an 1896 plan of the Fort. By 1911 the Emplacement had gone, and a new Electric Light Emplacement had been constructed at the tip of Siloso Point to Replace it (right).
During the 1930s, the underground complex was enlarged and more modern electrical generating plant was installed. The work involved the addition of oil storage facilities for the generators and major works at the tip of Siloso Point to accommodate three Electric Light Emplacements, a Twin 6-Pounder Gun Emplacement with Director Tower , and a Magazine for the Gun. As things turned out, there was no Twin 6-Pounder available and the Gun Emplacement was armed with a 12-Pounder QF Gun.
After WWII, a Twin 6-Pounder was mounted in the emplacement. This gun, and two others at Berhala Reping and Batu Berlayar were also adapted for anti-aircraft use.