Template:FtWordenBatteryBrannan
| No. | Caliber | Length | Model | Serial No. | Manufacturer | Carriage | Service Dates | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| A-1 | 12" Mortar Rifle | 141.125" | 1890MI | 51 | Builders Industrial Foundry | Mortar 1896MI, 259, Barig. Engr. Co. | 1901-1942 | ||
| A-2 | 12" Mortar Rifle | 141.125" | 1890MI | 54 | Watervliet | Mortar 1896MI, 256, Barig. Engr. Co. | 1901-1942 | ||
| B-1 | 12" Mortar Rifle | 141.125" | 1890MI | 49 | Builders Industrial Foundry | Mortar 1896MI, 255, Barig. Engr. Co. | 1901-1942 | ||
| B-2 | 12" Mortar Rifle | 141.125" | 1890MI | 21 | Niles Tool Works | Mortar 1896MI, 252, Barig. Engr. Co. | 1901-1942 | ||
| Source: RCW Form 1, Sep 1927 | |||||||||