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Mainz B

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Mainz B
Cruiser | Germany | Tier VIII
Tech Tree Position
Purchase priceSpecial Doubloons
Hit Points42,500 
Main Battery
150 mm/60 SK C/25 on a Drh Tr C/25 mount4 х 3 pcs.
Rate of Fire10 shots/min.
Reload Timesec.
Rotation Speed7.6 deg./sec.
180 Degree Turn Time23.68 sec.
Firing Range17.52 km.
Maximum Dispersion153 m.
HE Shell150 mm Spr.Gr. L/4.4 Kz. Ausf.B 
Maximum HE Shell Damage1,700 
Chance of Fire on Target Caused by HE Shell%
Initial HE Shell Velocity960 m./s.
HE Shell Weight45.5 kg.
AP Shell150 mm P.Spr.Gr. L/3.7 Ausf.B 
Maximum AP Shell Damage3,900 
Initial AP Shell Velocity960 m./s.
AP Shell Weight45.5 kg.
Secondary Armament #1
105 mm/65 SK C/33 on a Dop. L. C/31 mount6 х 2 pcs.
Firing Range7.6 km.
Rate of Fire17.91 shots/min.
Reload Time3.35 sec.
HE Shell105 mm Spr.Gr. Kz. 
Maximum HE Shell Damage1,200 
Initial HE Shell Velocity900 m./s.
Chance of Fire on Target Caused by HE Shell%
Torpedo Tubes
533 mm Vierling4 х 4 pcs.
Rate of Fire0.67 shots/min.
Reload Time90 sec.
Rotation Speed25 deg./sec.
180 Degree Turn Time7.2 sec.
TorpedoG7a T1 
Maximum Damage13,700 
Torpedo Speed64 knot
Torpedo Rangekm.
AA Defense
105 mm/65 SK C/33 on a Dop. L. C/31 mount6 х 2 pcs.
. . . Average Damage per Second99.6 
. . . Firing Range4.5 km.
37 mm/69 Flak M42 on an LM/42 mount18 х 2 pcs.
. . . Average Damage per Second185.4 
. . . Firing Range3.51 km.
20 mm/65 C/38 on a Flak 35 Vierling L/38 mount12 х 4 pcs.
. . . Average Damage per Second72 
. . . Firing Range2.01 km.
Maximum Speed32 knot
Turning Circle Radius720 m.
Rudder Shift Time10.5 sec.
Surface Detectability Range14.84 km.
Air Detectability Range7.5 km.
Battle Levels

Mainz B — German special premium Tier VIII cruiser.

In 1936, Germany ordered two cruisers armed with 150 mm guns housed in four triple-gun turrets. However, the cruisers were designed in such a way that their barbettes were identical to those of cruisers carrying 203 mm guns, which could easily be mounted instead of the 150 mm ones. That replacement was made in 1937, even before the ships had been launched.

Mainz B was first released for sale on 18 November 2022.


Main Battery Guns Rate of Fire
180° Turn Time
Maximum Dispersion
Maximum HE Shell Damage
Chance of Fire on Target Caused by HE Shell
Maximum AP Shell Damage
Research price
Purchase price
150 mm/60 SK C/25 on a Drh Tr C/25 mount1023.71531,70083,900 00
Hull Hit Points
Main Turrets
Secondary Gun Turrets
AA Mounts
Torpedo Tubes
Hangar Capacity
Research price
Purchase price
Mainz B.42,500131504612/18/64 00
Torpedoes Rate of Fire
Torpedo Tubes Reload Time
180° Turn Time
Maximum Damage
Torpedo Speed
Torpedo Range
Research price
Purchase price
G7a T10.7907.213,700646 00
Maximum Firing Range
Research price
Purchase price
FKS Typ 8 Mod. 10 00
Engine Maximum Speed
Research price
Purchase price
Propulsion: 132,000 hp32 00

Compatible Upgrades

 Slot 1 
Main Armaments Modification 1
Auxiliary Armaments Modification 1
Magazine Modification 1
Damage Control Party Modification 1
 Slot 2 
Damage Control System Modification 1
Defensive AA Fire Modification 1
Hydroacoustic Search Modification 1
Engine Room Protection
 Slot 3 
Main Battery Modification 2
Secondary Battery Modification 1
AA Guns Modification 1
Aiming Systems Modification 1
Torpedo Tubes Modification 1
 Slot 4 
Damage Control System Modification 2
Propulsion Modification 1
Steering Gears Modification 1
Depth Charges Modification 1
 Slot 5 
Torpedo Lookout System
Concealment System Modification 1
Steering Gears Modification 2
Ship Consumables Modification 1

Player Opinion


Warning. The data presented in the AA Defense sidebar section may be incorrect.
Refer to the in-game Port screens for more useful data.

Mainz B, or Mainz Black, is a clone of Mainz with an attractive black skin.

Mainz B's main battery is one of the key differences to her same tier half sisters. Unlike Admiral Hipper and Prinz Eugen Mainz B does not carry eight 203mm guns in four twin turrets, but instead uses twelve 150mm guns in four triple turrets. The guns and turrets that she has equipped are identical to those found on Tier VI Nürnberg. As such they also benefit from the baked in 1/4 HE penetration, which helps Mainz B penetrate the hull plating of Tier VIII to X battleships, whereas other light cruisers are required to equip IFHE to achieve similar results. This results in four captain skill points that don’t have to be spent on said captain skill as well as avoiding the -50% fire chance penalty that comes with IFHE, resulting in Mainz B having an easier time setting fires on enemy warships when using that skill. A disadvantage to Mainz B’s HE shells is a relatively low HE Alpha, resulting in her dpm being comparable to Chapayev.

The AP shells on Mainz B compare a bit differently to other AP shells. While the HE shells offer a rather uninspiring damage output, the potential output of Mainz B’s AP shells is outstanding. None of the Tier VIII light cruisers save for Bayard during the usage of Main Battery Reload BoosterWhen used, main battery reload time is significantly reduced. can match the AP dpm of Mainz B. In terms of penetration these shells are average, sitting right in between Cleveland and Bayard. What this means however is that these shells are not capable of landing citadel hits unless at short range, but they do deal tremendous amounts of damage should a target reveal its side.

A formidable main battery firing range of 17.5km ensures that Mainz B is able to apply her damage even on some of the less favorable high tier maps, but her firing angles are rather limiting. Towards the bow a full broadside is possible at 38°, towards the rear only at 40°, meaning that Mainz B is open to penetrations against her hull while firing broadsides. A high muzzle velocity results in good shell flight times in comparison to other 152mm armed ships at her tier.

Where Mainz B offers a rather nasty sting is in terms of torpedo armament. Her torpedo batteries match that of Tier X cruiser Hindenburg with two quadruple launchers on each side of the ship. While the potential damage that such a salvo can deliver is in theory enough to destroy most ships in the game with one broadside, the range is just as short as it is on the other heavy cruisers with only 6km range, limiting the usage.

While the Secondary battery also benefits from the 1/4 HE penetration rule, the 105mm guns are mostly useless due to the lacking range and lacking damage output. At best they will set a fire on a hostile vessel.

In terms of survivability Mainz B sitson a similar level compared to her half sister Admiral Hipper. A large hitpool, far beyond that of other Tier VIII light cruisers, but also a large hull as well as a thin armor belt mean that while Mainz B has the reserves to take hits, these are highly likely to deal damage. And unlike Prinz Eugen, Mainz B has no Repair PartyWhile active, restores a percentage of the ship's health points each second.. She also does not have the 27mm hull plating that her half sisters can offer, only her midship deck is 27mm thick while the upper belt and upper bow are only 25mm thick. This does make Mainz B vulnerable against 380/381mm AP shells that can overmatch through large sections of her hull. The turtleback, while offering additional protection for the vital areas, does not prevent painful normal penetrations. Some protection can be gained from the icebreaker bow, which covers roughly half of her bow with a thickness of 40mm. However outside of close range encounters it is difficult to capitalize on this plating, and it cannot be relied on. What comes on top is that Mainz B shares the rather fragile turrets of Nürnberg, making her main battery prone to incapacitations against HE shells and most AP shells.

The maneuverability of Mainz B leaves something to be desired. The rudder shift is rather long, the top speed among the lowest and the turning circle is nothing to write home about. In combination with the lack of armor on her hull this means that Mainz B will struggle to consistently and effectively avoid incoming damage at medium ranges.

The AA protection of Mainz B is rather decent compared to her half sisters. She shares the same 105mm dual purpose guns, but also carries a large array of 37mm guns which will throw out 319 damage per second against aircraft, almost on the same level as Baltimore. While this can make Mainz B a costly target to drop, it does not grant her immunity against aircraft however, even when applying additional AA improvements such as Defensive AA FireWhile active, the damage per second of large caliber anti-aircraft guns is increased. or captain skills.

One of Mainz B’s major weaknesses is her surface detection. Even when fully investing into concealment she only reaches 12km, worse than any other Tier VIII light cruiser. This results in Mainz B being unable to dictate the engagement, and should an opponent choose to keep her lit for the team to shoot at Mainz B will struggle to evade this threat.

In regards to Mainz B’s consumables she shares those of her half sister Admiral Hipper. Standard cruiser Damage Control PartyWhen activated, instantly repairs fires, floods, and incapacitations, and prevents more for the duration., the choice between the improved, German Hydroacoustic SearchWhile active, detects all enemy ships and torpedoes within the specified radius, without regard of obstacles such as smoke and terrain. or Defensive AA FireWhile active, the damage per second of large caliber anti-aircraft guns is increased. and a Catapult FighterWhile active, a group of fighter planes circles the ship providing protection by attacking incoming enemy aircraft..

What all this combines into is a medium to long range specialist. Decent ballistics and consistent damage output mean that Mainz B can engage targets at range where she can evade returning fire. Should the late game make it possible, getting into brawling range where the AP shells can be effectively applied as well as the devastating torpedo salvos. Depending on what is deemed more important – defending herself against air attacks or being able to spot torpedoes and ships – the decision between Defensive AA Fire and Hydroacoustic Search is up to the player.


  • Good main battery firing range
  • One of the best cruiser AP DPM values in its tier spread
  • For a German warship, Mainz B's HE DPM is quite good
  • High HE penetration (IFHE is not needed) and decent fire chance
  • Comfortable long range gunnery thanks to high shell velocity and flat arcs
  • Heavy torpedo armament of four quadruple launchers (two per side), great for close range combat
  • Turtleback armor scheme improves citadel protection at close range
  • Powerful AA suite
  • Same excellent Hydroacoustic SearchWhile active, detects all enemy ships and torpedoes within the specified radius, without regard of obstacles such as smoke and terrain. as Hindenburg


  • Unlike Prinz Eugen, Mainz B lacks the Repair PartyWhile active, restores a percentage of the ship's health points each second. consumable
  • Despite sharing the same hull, Mainz has thinner armor than Admiral Hipper
  • Poor main battery firing angles
  • Torpedoes are short-ranged
  • Lightly armored turrets can be disabled/destroyed easily
  • Sluggish handling for a light cruiser - average speed and slow rudder shift
  • Concealment is among the worst for a Tier VIII cruiser


As a premium ship, Mainz B has no module upgrades to research.

Optimal Configuration


The recommended upgrades are:

Commander Skills


Mainz B equips the following consumables:


As a premium ship, Mainz B comes with Default permanent camouflage and a set of permanent combat bonuses.


Note: Use of the Juliet Charlie signal makes detonation impossible.


Historical Info

Historical Gallery


Ship Change Log

See here for links to Update notes.

  • Available for purchase in the Premium Store during the Black Friday 2022 sale during Update 0.11.10. Could also drop from Black Friday containers.
  • Update 13.3:
    • Depth Charge damage increased from 2,200 to 2,400.

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