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The front cover of a List of Lights volume. A list of lights is a publication describing lighthouses and other aids to maritime navigation. Most such lists are published by national hydrographic offices. Some nations, including the United Kingdom and the United States, publish lists that cover the whole world in many volumes. Other nations ...
A motor launch (ML) is a small military vessel in Royal Navy service. It was designed for harbour defence and submarine chasing. Similar vessels were used by the Royal Air Force for armed high-speed air-sea rescue. Some vessels for water police service are also known as motor launches. Motor launches were slower than motor torpedo boats and ...
The first revolving light was fitted to the Swin Middle lightvessel in 1837. [citation needed] Tongue Tongue Sands 51°30′39″N 1°23′5″E [22] North Sea: Jenni Baynton, Light vessel no. 5 (1973) Lynn Well Trinity House: The Wash: Gull Stream, Light Vessel no. 89: Replaced with a Lanby in September 1973. Would Haisborough Sands: North Sea
The harbour defence motor launch (HDML) was a 72 ft (22 m) long British-designed motor vessel used for harbour defence during World War II. Nearly 500 were built by numerous Allied countries during the war. The HDML was designed by W J Holt at the Admiralty in early 1939.
The United Kingdom Hydrographic Office (UKHO) is the UK's agency for providing hydrographic and marine geospatial data to mariners and maritime organisations across the world. The UKHO is a trading fund of the Ministry of Defence (MoD) and is located in Taunton , Somerset , with a workforce of approximately 900 staff.
The U.S. Navy Hydrographic Office published its first NtM in 1869 and has issued NtMs weekly since 1886. How the information is compiled, organized and disseminated has evolved in the years since then but the NtM mission to provide mariners with accurate navigation information has remained the same.
Metrication of Admiralty charts began in 1967, and it was decided to synchronise this with the introduction of a new style of chart, with increased use of colour, which continues in use today. The most striking change is the use of buff for land. Green is used for drying (intertidal) areas, and magenta to indicate lights and beacons.
A motor torpedo boat is a fast torpedo boat, especially of the mid 20th century. The motor in the designation originally referred to their use of petrol engines, typically marinised aircraft engines or their derivatives, which distinguished them from other naval craft of the era, including other torpedo boats, that used steam turbines or ...