Template:FtStevensBatteryClark
| No. | Caliber | Length | Model | Serial No. | Manufacturer | Carriage | Service Dates | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| A-1 | 12" Mortar Rifle | 129.25" | 1890MI | 32 | Builders Industrial Foundry | Mortar 1896MI | 1899-1942 | ||
| A-2 | 12" Mortar Rifle | 129.25" | 1890MI | 29 | Builders Industrial Foundry | Mortar 1896MI | 1899-1917 | To Battery Guenther 1917 | |
| A-3 | 12" Mortar Rifle | 129.25" | 1890MI | 50 | Watertown | Mortar 1896MI | 1899-1942 | ||
| A-4 | 12" Mortar Rifle | 129.25" | 1890MI | 35 | Builders Industrial Foundry | Mortar 1896MI | 1899-1917 | To Battery Guenther 1917 | |
| B-1 | 12" Mortar Rifle | 129.25" | 1890MI | 51 | Watertown | Mortar 1896MI | 1899-1942 | ||
| B-2 | 12" Mortar Rifle | 129.25" | 1890MI | 48 | Watervliet | Mortar 1896MI | 1899-1917 | To Battery Guenther 1917 | |
| B-3 | 12" Mortar Rifle | 129.25" | 1890MI | 34 | Watertown | Mortar 1896MI | 1899-1942 | ||
| B-4 | 12" Mortar Rifle | 129.25" | 1890MI | 34 | Watervliet | Mortar 1896MI | 1899-1917 | To Battery Guenther 1917 | |
| Source: Coastal Defense Study Group | |||||||||