Nautical mile 1 sea mile", followed by "For most practical purposes distance is measured from the latitude scale, assuming that one minute of latitude equals one nautical mile". One tenth of a nautical mile is a cable length. The derived unit of speed is the knot, defined as one nautical mile per hour. The metre was originally defined as of the meridian arc from the North pole to the equator passing through Dunkirk. The Earth’s circumference is therefore approximately 40,000 km. The equatorial circumference is slightly longer than the polar circumference – the measurement based on this (40,075.017 km x x =
Type 45 240 mm howitzer army howitzers. The Type 45 was the first such weapon designed and built entirely in Japan, and entered service in 1912. It was usually deployed as part of coastal artillery batteries. The Type 45 240 mm howitzer is reported in use by Japanese heavy artillery units. The piece allegedly is disassembled into units which are transported in ten vehicles. Its maximum range is reputed to be about 11,000 yards, and it is believed to fire a semi-fixed round weighing approximately 400 pounds. The Type 45 was an extremely heavy weapon, weighing nearly when emplaced. Setup of the weapon required considerable