| O Class | |
|---|---|
| Price | 668,230 credits |
| Exp Cost | 1,080,393 |
| Previous Ship | P Class (SS) |
| Next Ship | A Class (SS) |
| Durability | 18,945 |
| Speed | 22 Knots (before Boiler or research) (max 31 surface, 26.5 submerged) |
| Armament | 1X Deck Gun (Marks XXIII (HE: 699)), 8 X 21" Torpedo Launchers (6 front, 2 rear) (12,662 Damage) |
| Other attributes
| |
| Defense Level | 4 |
| AAW Accuracy | 33.1% |
| Upgradeable Stats | Torpedo Reload Time, Ship Speed, Hull Limit Reliability (damage required to lower ship speed), Sonar Detection Duration |
| Landing Force Power | 0 |
| Available Aircraft | 0 |
| Aircraft Space | 0 |
| Launch Capacity | 0 |
| Dive Duration | 115.2 |
| Max Depth | 10 |
Tier 10 U.K. sub. She has a deck gun, slightly longer dive time and significantly more speed than her Tier 9 equivalent.
SUGGESTED STRATEGY 
Edit
The main difference between this sub and her predecessor, the P Class, is speed. With 550 more Durability, but no ability to research the Defense Level above 4, this boat remains a glass cannon. Though the damage output and reload time are identical to the P Class, expect your kills to increase a good bit with this boat due to the ability to get into good firing position faster and more often. The increase in speed from Tier 9 is substantial, making the O Class one of the fastest subs in the game and nearly as fast as the A Class. Keeping up with your team, and getting away from enemy sub-hunters is a little easier now. And it is now finally possible (with a gold Boiler) to catch up to some enemy battleships that are heading away from you. Most will still be able to pull away, but for once you have a chance some of the time. If you liked the P Class, you will love the O Class.
SUGGESTED EQUIPMENT Edit
Boiler, Repair Crew
