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Harpoon cannon outside of the Scott Polar Research Institute in Cambridge. A harpoon cannon is a whaling implement developed in the late 19th century and most used in the 20th century. It would be mounted on the bow of a whale catcher , where it could be easily aimed with a wide field of view at the target.
The Harpoon is an all-weather, over-the-horizon, anti-ship missile manufactured by McDonnell Douglas (now Boeing Defense, Space & Security). The AGM-84E Standoff Land Attack Missile (SLAM) and later AGM-84H/K SLAM-ER (Standoff Land Attack Missile – Expanded Response) are cruise missile variants.
Trond Wikborg's (Norwegian gun collector) page on the Jarman M1884; Page with some pictures and information on the Jarmann Archived 30 September 2018 at the Wayback Machine; More pictures of the Jarmann; Closeups of the Jarmann bolt assembly; Photo of the M28 from the left side, right side with harpoon and closeup of harpoon and line.
The M28 Jarmann harpoon rifle was a modification of the Jarmann M1884 Norwegian service rifle. Between the wars, several Norwegian gunsmiths attempted to create harpoon guns, [ 1 ] intended for hunting seals and shooting rescue lines to boats in distress.
Developed from the AGM-84E SLAM (Standoff Land Attack Missile, itself developed by Boeing Integrated Defense Systems from the McDonnell Douglas Harpoon anti-ship missile), the SLAM-ER is capable of attacking land and sea targets medium to long range (over 155 nautical miles/270 km maximum). [7]
A slump in oil prices after the American Civil War forced their endeavor into bankruptcy in 1867. [12] An early version of the explosive harpoon was designed by Jacob Nicolai Walsøe, a Norwegian painter and inventor. His 1851 application was rejected by the interior ministry on the grounds that he had received public funding for his experiments.
The choke bored guns performed better than the cylinder guns in all these tests, and W.W. Greener choke bore guns won the class 1, class 2 and class 4 categories. Greener Choke bores also won at the London Gun Trials of 1877 and 1879, and the Chicago Field Gun Trial of 1879.
Firstly, the gun can be used to push off sharks or signal the boat driver, and secondly to prevent loss of the gun should the fish break the line, or should the spearfisher lose grip on the buoy. This setup can be used in conjunction with elastic bungee -style rope and a body board style float with locking cleats.