6-inch gun M1897

6-inch gun M1900
6-inch gun M1905 on disappearing carriage M1903, Battery Chamberlin, Fort Winfield Scott, Presidio of San Francisco
Type	coastal artillery field gun
Place of origin	United States
Service history
In service	1897–1945
Used by	United States Army
Wars	World War I, World War II
Production history
Designer	Watervliet Arsenal
Designed	1897
Manufacturer	Watervliet Arsenal, possibly others
Variants	M1897, M1900, M1903, M1905, M1908, M1 (a.k.a. T2)
Specifications
Mass	19,114 pounds (8,670 kg)
Length	310.4 inches (788 cm)
Barrel length	50 calibers (300 inches (760 cm)) M1897 & M1908: 45 calibers (270 inches (690 cm))
Shell	separate loading, 108 pounds (49 kg) or 105 pounds (48 kg) AP shot & shell, 90 pounds (41 kg) HE[1][2]
Caliber	6 inch (152 mm)
Breech	Interrupted screw, De Bange type
Recoil	Hydro-spring
Carriage	M1898, M1903, or M1905 disappearing M1900 or M1910 pedestal M1, M2, M3, M4 shielded barbette most carriages manufactured by Watertown Arsenal[3]
Elevation	disappearing: 15° pedestal: 20° WWII high-angle barbette: 47°
Traverse	disappearing: 170° (varied with emplacement) pedestal: 360° (varied with emplacement) WWII high-angle barbette: 360° (varied with emplacement)
Maximum firing range	disappearing: 14,600 yards (13,400 m) pedestal: 17,000 yards (16,000 m) WWII high-angle barbette with M1 gun: 27,500 yards (25,100 m)[1]
Feed system	hand

The 6-inch gun M1897 (152 mm) and its variants the M1900, M1903, M1905, M1908, and M1 (a.k.a. T2) were coastal artillery pieces installed to defend major American seaports between 1897 and 1945. For most of their history they were operated by the United States Army Coast Artillery Corps. They were installed on disappearing carriages or pedestal (a.k.a. barbette) mountings, and during World War II many were remounted on shielded barbette carriages.^[4] Most of the weapons not in the Philippines were scrapped within a few years after World War II.