The Nexter Narwhal is a type of remotely operated naval artillery turret made by the French company Nexter. It houses a 20 mm autocannon based on the Nexter M621 and M693. The name Narwhal is a backronym of NAval Remote Weapon, Highly Accurate, Lightweight.[2] It is designed to fit warships of all types ranging from patrol boats to frigates to aircraft carriers, notably as a close-quarters self-defence weapon.Type AutocannonPlace of origin FranceService historyIn service 2013 —Used by French NavyEgyptian NavyCoast Guard of AlbaniaRoyal Saudi NavyGabonese NavyArmed Forces of SenegalProduction historyDesigner NexterDesigned 2011Manufacturer NexterVariants
Narwhal 20ANarwhal 20BSpecificationsMass 390 kg (860 lb) (without ammunition)Crew 1Caliber 20×102mm (Narwhal 20A)20×139mm (Narwhal 20B)Action Gas unlocked, delayed blowback[1]Elevation +75°/-20°Traverse 360°Rate of fire 800 round/minMuzzle velocity 1,050 m/s (3,400 ft/s)Effective firing range 1,500 m (4,900 ft) against aerial targets