RO-100-Class (Type KS)
Coastal Defenders - RO-100-class were small coastal defense submarines. 18 boats built 1942-1944. Very small (601/782 tons), four torpedoes with no reloads. 14 knots surfaced, 8 submerged. Mass-produced for homeland defense but many sent to distant waters. 13 lost in combat (72% loss rate). Showed limitations of coastal subs in Pacific - too small, too slow, too limited. Five survived to surrender.
Specifications
- Displacement (std)
- 611 t
- Displacement (full)
- 782 submerged t
- Length
- 199.8 ft
- Beam
- 19.7 ft
- Crew
- 38
- Ships built
- 18
- Commissioned
- 1942-1944
- Decommissioned
- 1945-1948 (combat losses and scrapping)
Performance
- Top speed
- 14.2 kn
- Range
- 3500 nm at 12 knots surfaced
Armament
- Secondary guns
- None
- Torpedoes
- 4× 533mm (21-inch) - bow tubes
Armor & Systems
- Belt
- None
In-Game
- Tier
- T4
- Game power
- 65.31
- Research cost
- 22,989
- Credit cost
- 45,717
Notable
- Mass-produced coastal defense submarines
- Four torpedoes, no reloads (one-shot design)
- 18 built rapidly 1942-1944
- 13 lost in combat (72% loss rate)
- Showed limitations of small coastal subs in Pacific