Raffles Lighthouse

Raffles Lighthouse has a focal height of 32 metres, a tower height of 29 metres and a range of 20 nautical miles. It was built in 1855.

Focal height
32 metres
Tower height
29 metres
Range
20 nautical miles
Built
1855
Light characteristic
Fl (3) W 20s.
Coordinates
1.1601, 103.74008
Raffles Lighthouse

The Raffles Lighthouse is located in Singapore, specifically on Pulau Satumu, and has a tower height of 29m with a focal height of 32m. It was built in 1855 and has a range of 20 nautical miles. The lighthouse can be found at coordinates 1.160100, 103.740080.

Light and tower

It has a cylindrical tower with balcony and lantern tower. The tower is built of granite. Its daymark is white tower and lantern. The light has a focal height of 32 metres. The light has a range of 20 nautical miles. Its light characteristic is Fl (3) W 20s. The Admiralty list of lights numbers it F1693.

Details

Marking
White tower and lantern
Range Nm
20
Year Built
1855
Description
The lighthouse was erected on a rocky island called Pulau Satumu, the southernmost island off the main island of Singapore. Pulau Satumu means "one tree island" – ''sa'' refers to ''satu'' ("one") and ''tumu'' is the Malay name for the large mangrove tree, ''Bruguiera confugata''. The light source was a wick burner which was replaced in 1905 by a pressurised vapour kerosene mantle burner to increase the light intensity for a greater visible range. A 2nd Order optic was mounted on a roller carriage to allow for smooth rotation. (The Order is a system of classifying the type of lenses used based on the focal length of the lens). This roller carriage was a weight-driven machine which had to be rewound manually to lift the weight whenever it reached the base. The rewinding was done hourly. A crew of seven men was required to man the lighthouse.
Tower Shape
Cylindrical tower with balcony and lantern
Image Caption
Raffles Lighthouse in 2014
Location Text
Pulau Satumu, Singapore
Focal Height M
32
Tower Height M
29
Admiralty Number
F1693
Intensity Candelas
117,000 [[candela]]s
Light Characteristic
Fl (3) W 20s.
Construction Material
Granite tower