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Launched. 2009. Content license. CC BY-SA (map), ODbL (data) OpenSeaMap is a software project collecting freely usable nautical information and geospatial data to create a worldwide nautical chart. This chart is available on the OpenSeaMap website, and can also be downloaded for use as an electronic chart for offline applications.
A nautical chart or hydrographic chart is a graphic representation of a sea region or water body and adjacent coasts or banks. Depending on the scale of the chart, it may show depths of water ( bathymetry) and heights of land ( topography ), natural features of the seabed, details of the coastline, navigational hazards, locations of natural and ...
Nine-dash line. The nine-dash line, also referred to as the eleven-dash line by Taiwan, is a set of line segments on various maps that accompanied the claims of the People's Republic of China (PRC, "mainland China") and the Republic of China (ROC, "Taiwan") in the South China Sea. [1] The contested area includes the Paracel Islands, [a] the ...
A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines. Unlike depth charges, mines are deposited and left to wait until they are triggered by the approach of, or contact with, any vessel or a particular vessel type, akin to anti-infantry or anti-vehicle mines.
Lord High Constable of England (2023) Admiral Sir Antony David Radakin, KCB, ADC (born 10 November 1965) is a senior Royal Navy officer. He was appointed Chief of the Defence Staff, the professional head of the British Armed Forces, in November 2021. Radakin was previously the First Sea Lord, the professional head of the Naval Service from June ...
53.4 m (175 ft) (1960) [ 3] The Aral Sea ( / ˈærəl /) [ 4][ a] was an endorheic lake (that is, without an outlet) lying between Kazakhstan to its north and Uzbekistan to its south, which began shrinking in the 1960s and largely dried up by the 2010s. It was in the Aktobe and Kyzylorda regions of Kazakhstan and the Karakalpakstan autonomous ...
After the second day of the battle, losses totaled three carriers, more than 350 carrier aircraft, and around 200 land-based aircraft. In the five major "carrier-on-carrier" battles, from the Battle of the Coral Sea to the Battle of the Philippine Sea, [N 1] the IJN had lost nine carriers, while the USN had lost four. The aircraft and trained ...
OpenStreetMap. OpenStreetMap ( OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys, trace from aerial imagery and also import from other freely licensed geodata sources. OpenStreetMap is freely licensed under the Open Database License and as ...