<P> The sea - level surface of the Earth (the geoid) is irregular, so the actual length of the Equator is not so easy to determine . Aviation Week and Space Technology on 9 October 1961 reported that measurements using the Transit IV - A satellite had shown the equatorial "diameter" from longitude 11 ° West to 169 ° East to be 1,000 feet (300 m) greater than its "diameter" ninety degrees away . </P> <P> Certain navies, such as the Royal Navy, Russian Navy, and US Navy, have a tradition of holding ceremonies aboard ships to mark sailors' first crossing of the Equator . These rites of initiation have in the past been notorious for their brutality . Milder line - crossing ceremonies, typically featuring King Neptune, are also held for passengers' entertainment on some civilian ocean liners and cruise ships . </P> <Table> <Tr> <Th> (show) Map all coordinates using OSM Map all coordinates using Google </Th> </Tr> <Tr> <Td> Export all coordinates as KML </Td> </Tr> <Tr> <Td> Export all coordinates as GPX </Td> </Tr> <Tr> <Td> Map all microformatted coordinates </Td> </Tr> <Tr> <Td> Place data as RDF </Td> </Tr> </Table> <Tr> <Th> (show) Map all coordinates using OSM Map all coordinates using Google </Th> </Tr>

What is the location on earth relative to the equator