Template:FtWordenBatteryPowell
| No. | Caliber | Length | Model | Serial No. | Manufacturer | Carriage | Service Dates | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| A-1 | 12" Mortar Rifle | 141.125" | M1890MI | 16 | Niles Tool Works | Mortar 1896MI, 251, Barig. Engr. Co. | 1901-1942 | ||
| A-2 | 12" Mortar Rifle | 141.125" | M1890MI | ? | ? | Mortar 1896MI, | 1901-1918 | Removed 1818 | |
| A-3 | 12" Mortar Rifle | 141.125" | M1890MI | 52 | Builders Iron Foundry | Mortar 1896MI, 248, Barig. Engr. Co. | 1901-1942 | Changed to A-2 | |
| A-4 | 12" Mortar Rifle | 141.125" | M1890MI | ? | ? | Mortar 1896MI, | 1901-1918 | Removed 1818 | |
| B-1 | 12" Mortar Rifle | 141.125" | M1890MI | 27 | Builders Iron Foundry | Mortar 1896MI, 247, Barig. Engr. Co. | 1901-1942 | ||
| B-2 | 12" Mortar Rifle | 141.125" | M1890MI | ? | ? | Mortar 1896MI, | 1901-1918 | Removed 1918 | |
| B-3 | 12" Mortar Rifle | 141.125" | M1890MI | 20 | Niles Tool Works | Mortar 1896MI, 244, Barig. Engr. Co. | 1901-1942 | Changed to B-2 | |
| B-4 | 12" Mortar Rifle | 141.125" | M1890MI | ? | ? | Mortar 1896MI, | 1901-1918 | Removed 1918 | |
| Source: RCW Form 1 Nov 1925 | |||||||||