| |
| Class overview | |
|---|---|
| Name | Adder class |
| Operators |  Royal Netherlands Navy |
| Preceded by | Heiligerlee class |
| Succeeded by | Draak |
| Completed | 6 |
| Lost | 1 |
| Scrapped | 5 |
| General characteristics (as completed) | |
| Class and type | Adder-class monitor |
| Displacement | 1,555–1,585 long tons (1,580–1,610 t) |
| Length | 192.25–195.4 ft (58.6–59.6 m) (o/a) |
| Beam | 44 ft (13.4 m) |
| Draft | 9 ft 9 in (3.0 m) |
| Installed power | 560–740 ihp (420–550 kW) |
| Speed | 7–8 knots (13–15 km/h; 8.1–9.2 mph) |
| Complement | 117 |
| Armament |
|
| Armor |
|
The Adder-class monitors were a group of six ironclad monitors built for the Royal Netherlands Navy in the 1870s.