Combat envelope
Range and detection
Every bar uses the same 10 km scale. Surface detection is a visibility threshold, not a weapon range.
Ship Database
Tier I
Cruiser
Pan-Asia
Chengan
Taking advantage of a loophole in the London Naval Treaty that placed no restrictions on the number of ships with a displacement of up to 600 tons, Japan started building small ships in the 1930s that were classified as Kaibōkans—originally in Japan, this referred to obsolete ships repurposed for coastal defense needs. The project was developed by...
Read full ship history
Taking advantage of a loophole in the London Naval Treaty that placed no restrictions on the number of ships with a displacement of up to 600 tons, Japan started building small ships in the 1930s that were classified as Kaibōkans—originally in Japan, this referred to obsolete ships repurposed for coastal defense needs. The project was developed by Mitsubishi. Kaibōkan No. 40 was built at the Fujinagata shipyard. After the surrender of Japan, the ship was used in the fleets of the Anti-Hitler coalition countries as a minesweeper, and in the August of 1947, she was transferred to the Chinese fleet and renamed Chengan. In 1949, the ship became part of the Republic of China Navy.
At a glance
The numbers that shape the ship
- Hit points
- 4,900
- Maximum speed
- 19.0 knots
- Surface detection
- 5.9 km
- Main battery range
- 8.5 km
- Main battery reload
- 5.0 s
Damage comparison
Published maximum per hit
Bars are normalized only against this ship's highest listed hit. They are not salvo damage, expected damage or DPM.
Handling, concealment and protectionOverview
Handling
- Maximum speed
- 19.0 knots
- Turning circle radius
- 240 m
- Rudder shift time
- 2.0 s
Concealment
- Surface detection
- 5.9 km
- Air detection
- 6.4 km
- Submarine detection
- 6.4 km
Survivability
- Hit points
- 4,900
- Torpedo damage reduction
- 0 %
Published armour thickness
Only positive values supplied by the API are shown.
- Overall published range
- 6–13 mm
Weapons and payloadsArmament
Surface armament
Main battery
- Maximum range
- 8.5 km
- Reload time
- 5.0 s
- Rate of fire
- 10.9 rounds/min
- 180° turn time
- 15.0 s
- Maximum dispersion
- 79 m
Shells
Damage is the API's published maximum for one shell hit.
127 mm HE Type1
HE- Maximum damage per hit
- 1,050
- Fire chance
- 8.0 %
- Muzzle velocity
- 725 m/s
- Shell mass
- 23 kg
Gun layout
- Mount
- 127 mm/40 Type 89 on a Model A1 Mod.1 mount
- Mounts
- 2
- Barrels each
- 2
Automatic armament
Secondary battery
Anti-aircraft defence
- Aura
- 25 mm/60 Type 96 on a triple mount
- Calibre
- 25 mm
- Mounts
- 2
- Aura
- 127 mm/40 Type 89 on a Model A1 Mod.1 mount
- Calibre
- 127 mm
- Mounts
- 2
Modules, hull and progressionTechnical data
Default hull
- Hull hit points
- 4,900
- Main-battery barrels
- 2
- AA mounts
- 4
Engine
- Published maximum speed
- 19.0 knots
Fire control
Module research tree
Names, research prices and defaults are reported directly by the API.
Chengan (A)
Default- Type
- Hull
- Next ships
- 1
Propulsion: 2,500 hp
Default- Type
- Engine
Type1 mod. 1
Default- Type
- Suo
127 mm/40 Type 89 on a Model A1 Mod.1 mount
Default- Type
- Artillery
Compatible upgrades
Official modernization descriptions and listed purchase prices. Effects still depend on the slot and configuration used in game.
Main Armaments Modification 1
Modernization- Credits
- 125,000
Auxiliary Armaments Modification 1
Modernization- Credits
- 125,000
Next ships
Research costs published in this ship's official progression data.
- Ship
- Longjiang
- Research cost
- 100 XP
- Available module groups
- 10
- Compatible upgrades
- 2
- Researchable next ships
- 1
- Upgrade slots
- 1
- Published battle levels
- 1–1
Cross-nation comparison
Ships that fill a similar slot
Closest same-tier, same-class matches from other nations, ranked by published base statistics.
