O'Brien-Class
First 21-inch Torpedoes - Major upgrade from 18-inch to 21-inch (533mm) Mark 8 torpedoes, significantly increasing striking power.
Specifications
- Displacement (std)
- 1050 t
- Displacement (full)
- 1187 t
- Length
- 305.4 ft
- Beam
- 31.2 ft
- Crew
- 99
- Ships built
- 6
- Commissioned
- 1914-1915
- Decommissioned
- 1920s
Performance
- Top speed
- 29 kn
- Range
- 5300 nm at 12 knots
Armament
- Main guns
- 4× 4-inch/50 cal Mark 9
- Secondary guns
- None
- Torpedoes
- 8× 21-inch (4× twin)
Armor & Systems
- Belt
- None
- Fire control
- Not documented
In-Game
- Tier
- T2
- Game power
- 22.19
- Research cost
- 1,953
- Credit cost
- 15,533
Notable
- First US destroyers with 21-inch torpedoes