Nautical Channel Nautical Channel Launched on 5 December 2011, Nautical Channel is the only international 24/7 nautical sports and lifestyle channel in the world. The channel caters to a local and worldwide audience and was founded by Andrew Miller and Laurence Fox Hopper. Nautical Channel is available to over 20 million subscribers in 44 countries in English, French and German. It is on over one hundred international pay TV, satellite, subscriber IpTV, mobile phone, Digital Terrestrial, MMDS and cable TV platforms. Nautical Channel has assembled the largest ever group of international nautical TV producers in order to provide viewers with the best
Grade measurement of 1872 may be mentioned. Grade measurement Grade measurement is the geodetic determination of the local radius of curvature of the figure of the Earth by determining the difference in astronomical latitude between two locations on the same meridian, the metric distance between which is known. The first known grade measurement was performed by Eratosthenes (240 BC) between Alexandria and Syene in what is now Egypt, determining the radius of the Earth with remarkable correctness. The Dutch geodesist Snellius (~1620) repeated the experiment between Alkmaar and Bergen op Zoom using more modern geodetic instrumentation. Later grade measurements aimed at determining