I-56 '44: Tier X Japanese Premium Submarine 1944
One of three B3-class cruiser submarines built under a naval shipbuilding program adopted just before the outbreak of World War II. I-56 entered service in June 1944. Initially armed with a 140 mm gun, the submarine retained this configuration only briefly. By October 1944, she had already begun conversion into a carrier for manned torpedoes.
{tocify} $title={Table of Contents}

Flip your mobile device to landscape for better viewing.
Ship Info
Ship Name:
X I-56 '44


Level: 10
WG Introduction: March 27, 2025
Status during Testing:
Special Ship

Estimated Released: 14.6
Base Value:
34,650

Nation:
Japan

Current Development Status: Work in Progress
Survivability
Hit Points: 25,600 hp
Plating: 19 mm
Fore / Middle / Aft Light Hull Plating: 19 mm
Fore / Middle / Aft Pressure Hull Plating: 25 mm
Deck Plating: 16 mm
Turret Plating: 6 mm
Tonnage: 3,747 tn
Main Battery Armament
1×1 140 mm/40 11th Year Type:
Max Range: 10.0 km
Reload: 2.0 s
180° Turn Time: 7.2 s
Dispersion at Max Range: 50 m
Sigma: 2.0σ
Shell Types
HE Shells
1× 140 mm HE Type1:
Alpha Damage: 2,500
Alpha Piercing HE: 23.0 mm
Ammo Type: High Explosive
Shell Air Drag: 0.34
Shell Always Ricochet At: 60.0°
Normalization: 68.0°
Shell Detonator: 0.001
Shell Detonator Threshold: 2.0
Shell Diameter: 140 mm
Shell Krupp: 360.0
Shell Mass: 38.0 kg
Shell Ricochet At: 91.0°
Shell Speed: 850.0 m/s
Burn Probability: 16%
Sonar
Reload: 6.5 s
Duration of a ping effect on a highlighted sector: once 25 s/ twice 55 s
Ping velocity: 600 m/s
Ping width: 18 m
Max Range: 7.0 km
Torpedoes
6×1 533 mm Type95 mod. 3:
*Max Damage: 20,800 (After 10 km)
Range: 15.0 km
Reload: 45 s
Speed: 78 kts
Launcher 180° Turn Time: 15.0 s
Bow torpedo tubes: x6
Torpedo detectability: 2.1 km
- Damage Also Increases with Distance, but in a different way to normal submarine torpedoes:
- Up to 3km, they have only reached 50% of their max damage of 10,400 (unlike standard torpedoes, which would be at 100% by this point).
- Damage continues increasing beyond 3km, scaling up further.
- Max Damage at 10km: They finally reach 100% damage potential after traveling 10 kilometers.
Dive Capacity
Dive capacity: 90 units
Dive capacity depletion: 1.0 units/s
Dive capacity recharge rate: 2.0 units/s
Mobility
Surfaced Speed
Maximum speed: 30 knots
Turning circle radius: 590 m
Rudder shift time: 9.0 s
Propulsion: 9,400 hp
Submerged Speed
Maximum speed: 13 knots
Drive plane shift time: 25.9 s
Dive and ascent speed: 2.9 m/s
Detection
Surface Detectability: 7.1 km
Air Detectability: 2.6 km
Detectability by depths: 0-2.6 km
Detectability whilst firing in smoke: 3.0 km
Available Consumables
Slot 1: Damage Control Party:
Charges: 3
Action time: 15 s
Reload time: 60 s
Slot 2: Hydrophone:
Charges: 4
Action Time: 1 s
Ship Bearing Distance: 7.0 km
Revealing Ships Positions Time: 6 s
Reload Time: 80 s
Slot 3: Reserve Battery Unit:
Charges: 2
Action Time: 60 s
Reload Time: 120 s
Slot 4: Main Battery Reload Booster:
Charges: 3
Action Time: 8 s
Main Battery Recharge Time: -50%
Reload Time: 100 s
Slot 5: Submarine Surveillance:
Charges: Infinite
Action Time: 30 s
Submarine Spotting Range at Maximum Depth: 5.0 km
Preparation Time at the Beginning of the Battle: 330 s
Reload Time: 120 s