Cossack B

13.10

Cossack B

Destroyer | U.K. | Tier VIII

Tech Tree Position

General

Purchase priceSpecial

Hit Points15,200

Main Battery

120 mm/45 Mk.IX on a CPXIX mount4 х 2 pcs.

Rate of Fire12 shots/min.

Reload Time5 sec.

Rotation Speed20 deg./sec.

180 Degree Turn Time9 sec.

Firing Range11.89 km.

Maximum Dispersion104 m.

HE Shell120 mm HE

Maximum HE Shell Damage1,700

Chance of Fire on Target Caused by HE Shell8 %

Initial HE Shell Velocity808 m./s.

HE Shell Weight22.68 kg.

AP Shell120 mm AP

Maximum AP Shell Damage2,100

Initial AP Shell Velocity808 m./s.

AP Shell Weight22.68 kg.

Torpedo Tubes

533 mm QR Mk II1 х 4 pcs.

Rate of Fire0.91 shots/min.

Reload Time66 sec.

Rotation Speed25 deg./sec.

180 Degree Turn Time7.2 sec.

Torpedo533 mm Mk IXM

Maximum Damage16,767

Torpedo Speed62 knot

Torpedo Range9.99 km.

AA Defense

40 mm/39 Vickers QF Mk.VIII on a Mk.VII mount1 х 4 pcs.

. . . Average Damage per Second12.9

. . . Firing Range2.49 km.

12.7 mm Mk.III2 х 4 pcs.

. . . Average Damage per Second4.2

. . . Firing Range1.2 km.

Maneuverability

Maximum Speed36 knot

Turning Circle Radius610 m.

Rudder Shift Time3.6 sec.

Concealment

Surface Detectability Range6.76 km.

Air Detectability Range3.12 km.

Battle Levels

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13.10

Cossack B

Destroyer | U.K. | Tier VIII

Tech Tree Position

General

Purchase priceSpecial

Hit Points15,200

Main Battery

120 mm/45 Mk.IX on a CPXIX mount4 х 2 pcs.

Rate of Fire12 shots/min.

Reload Time5 sec.

Rotation Speed20 deg./sec.

180 Degree Turn Time9 sec.

Firing Range11.89 km.

Maximum Dispersion104 m.

HE Shell120 mm HE

Maximum HE Shell Damage1,700

Chance of Fire on Target Caused by HE Shell8 %

Initial HE Shell Velocity808 m./s.

HE Shell Weight22.68 kg.

AP Shell120 mm AP

Maximum AP Shell Damage2,100

Initial AP Shell Velocity808 m./s.

AP Shell Weight22.68 kg.

Torpedo Tubes

533 mm QR Mk II1 х 4 pcs.

Rate of Fire0.91 shots/min.

Reload Time66 sec.

Rotation Speed25 deg./sec.

180 Degree Turn Time7.2 sec.

Torpedo533 mm Mk IXM

Maximum Damage16,767

Torpedo Speed62 knot

Torpedo Range9.99 km.

AA Defense

40 mm/39 Vickers QF Mk.VIII on a Mk.VII mount1 х 4 pcs.

. . . Average Damage per Second12.9

. . . Firing Range2.49 km.

12.7 mm Mk.III2 х 4 pcs.

. . . Average Damage per Second4.2

. . . Firing Range1.2 km.

Maneuverability

Maximum Speed36 knot

Turning Circle Radius610 m.

Rudder Shift Time3.6 sec.

Concealment

Surface Detectability Range6.76 km.

Air Detectability Range3.12 km.

Battle Levels

12345678910

VIII

Special

Cossack B — British special premium Tier VIII destroyer.

One of the renowned Tribal-class destroyers, different from her British same-type contemporaries in her large size and emphasis on gunnery over torpedo warfare. At the time of her commissioning, she carried four twin 120 mm mounts as her main battery.

Cossack B was first released in late November 2020 for the Black Friday event. Other than her attractive camouflage, she is in all particulars identical to Cossack.

Modules

	Rate of Fire (shots/min)	180° Turn Time (sec)	Maximum Dispersion (m)	Maximum HE Shell Damage (HP)	Chance of Fire on Target Caused by HE Shell (%)	Maximum AP Shell Damage (HP)		Research price (exp)	Purchase price ()
120 mm/45 Mk.IX on a CPXIX mount	12	9	104	1,700	8	2,100		0	0

	Hit Points (HP)	Armor (mm)	Armor (mm)	Main Turrets (pcs.)	Secondary Gun Turrets (pcs.)	AA Mounts (pcs.)	Torpedo Tubes (pcs.)	Hangar Capacity (pcs.)		Research price (exp)	Purchase price ()
Cossack B.	15,200	6	20	4		2/1	1			0	0

	Rate of Fire (shots/min)	Torpedo Tubes Reload Time (sec)	180° Turn Time (sec)	Maximum Damage (HP)	Torpedo Speed (knot)	Torpedo Range (km)		Research price (exp)	Purchase price ()
533 mm Mk IXM	0.9	66	7.2	16,766	62	10		0	0

	IDS_SHIP_PARAM_SUO_INCREASE_DIST (%)	Maximum Firing Range (km)		Research price (exp)	Purchase price ()
Mk VIII mod. 1		0		0	0

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 44,000 hp	36		0	0

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4
Slot 5

Player Opinion

Performance

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

Tier VIII Premium Cossack B is a comfortable blend of firepower and concealment. Captains will notice many similarities between Cossack B and Tier VII Premium Commonwealth destroyer Haida. Her performance is very similar and she shares many of the same strength and weaknesses as her sister ship. The most obvious difference between the two ships if the number of main battery rifles, with Cossack B bringing an extra pair of them to the fight.

The guns on Cossack B are plentiful and provide the ship with excellent firepower, although captains will note the firing angles on the 'Y' turret are quite poor; Cossack B must expose a lot of her profile in order to bring all four turrets into a fight. However, when she does manage to get all her guns firing, she boasts an impressive damage rate with her HE shells (complimented by a base fire chance of 8%). This presents Cossack B with almost unrivaled gun power for her tier, capable of quickly dispatching of destroyers that get caught out by her good concealment.

Cossack B’s Smoke Generator  provides her with a quick smoke screen which will allow her to bring her guns into play before before she is forced to move on by the relatively short duration of her smoke. This does, however, promote usage of her smoke primarily for defensive play, as she is able to deploy it to quickly break line of sight with pursuing enemy ships. Captains of Cossack B will find that because of the relatively short smoke duration they are forced to re-position frequently, but her excellent concealment blends well with this.

Cossack B also gains access to a Hydroacoustic Search ; however, she trades most of its offensive usability for defensive flexibility. Despite being very short-ranged (only 3.0 km), it provides plenty of forewarning about hostile torpedoes. The long duration of this consumable helps to ensure Cossack B captains are almost never caught out by hostile torpedoes, able to keep themselves safe during prolonged confrontations. Captains may also opt to use her hydro in a more aggressive manner by pushing close to enemy smoke screens that may have destroyers lurking within, but the short range of her hydro makes doing so a fairly risky play. However, the Hydroacoustic Search  is less than ideal for this task as it falls short on spotting range when compared to that of other destroyers at her tier, such as German Z-23 or Pan-Asian Loyang.

Another of Cossack B’s key strengths is her excellent concealment. Her low base detection range allows her to deal with enemy destroyers while providing her with the flexibility to control an engagement, choosing when and where to open fire. Her concealment provides her with a buffer zone against other destroyers, allowing Cossack B to evade ships which outgun her, while outgunning ships which out-spot her. Her smoke screen benefits her when used to enable such a play style, allowing her to break detection and disengage if required.

Things are not all smooth sailing for Cossack B though, and she has a few glaring weaknesses. Her foremost issue is her torpedoes, which — although good — are lacking in quantity, as she mounts only a single quadruple-tube launcher. On top of this, the restrictive gun angles of her main battery can also limit the true effectiveness of her guns during close quarter duels. This, when combined with her relatively small health pool can make close quarter duels a somewhat risky business. Lastly, her anti-aircraft defenses are inadequate even for self-defense, so captains must fall back to their team for defense against enemy air attacks.

Captains of Cossack B will find the most success using her concealment to sneak upon unsuspecting destroyers and from here pushing into a knife fight to secure the kill. This will allow her to ensure her guns land as many hits as possible, using a mix of her single launch torpedoes and high DPM main battery. Careful and calculated usage of her Smoke Generator  will allow captains to effectively fight or flee from any enemy ships will allow Cossack B to best perform her role as a defensive scout, providing spotting for the team and probing around caps while remaining close to friendly ships to deter attacks from hostile destroyers.

Pros:

• Eight main guns in four twin turrets with good rate of fire and very quick turret traverse
• Good torpedo damage, range and reload speed
• Excellent concealment, as low as 5.5km with all the relevant upgrades
• Access to a long lasting Hydroacoustic Search  consumable
• The Smoke Generator  consumable has many charges and reloads quickly

Cons:

• The rearmost turret has very bad firing angles
• Only a single quadruple torpedo launcher with bad firing angles
• Virtually useless AA suite, very vulnerable to planes
• Smoke from Smoke Generator  disperses very quickly
• The Hydroacoustic Search  consumable has a very short detection range

Research

As a Premium ship, Cossack B doesn't have any upgrades to research.

Optimal Configuration

Upgrades

The recommended upgrades for Cossack B are as follows:

• Slot 1: Main Armaments Modification 1
• Slot 2: Engine Room Protection  *
• Slot 3: Aiming Systems Modification 1
• Slot 4: Steering Gears Modification 1
• Slot 5: Concealment System Modification 1 

Also for Slot 2 the Hydroacoustic Search Modification 1 special upgrade provides a 20% (36 second) action time boost to Hydro. And the Engine Boost Modification 1 special upgrade provides a 30% (36 second) action time boost to Engine Boost. Both are viable and may match your play style better than the alternatives.

Commander Skills

Key skills for Cossack B commanders include Last Stand and Concealment Expert.

Recommended Commander Skills
Cost (points)	Attack				Defense
1	Grease the Gears +15% main battery traverse speed.	Liquidator +30% chance (multiplicative) of causing flooding. ★	Consumables Specialist −7.5% cooldown time of all Consumables except:  Damage Control Party ,  Repair Party .	Gun Feeder -40% time to switch shell type.	Incoming Fire Alert Receive a warning about a salvo fired at your ship from more than 4.5 km.	Preventive Maintenance −30% chance of main armament, engines, steering becoming incapacitated +15% to HP of secondary and AA guns. ★★
2	Demolition Expert +1% chance of main and secondary HE shells causing a fire. +15% to the damage-inflicting area of HE shells fired at submarines. ★★	Swift Fish +5% torpedo speed.	Consumables Enhancements +10% action time of: Hydroacoustic Search , Surveillance Radar , Smoke Generator , & Engine Boost . ★	Extra-Heavy Ammunition +7.5% main battery AP shell damage. +10% damage from depth charges.	Priority Target The detection indicator will show the number of enemies aiming at you with main battery. ★	Last Stand The ship remains able to move and maneuver - slowly - while the engine or steering gears are incapacitated. ★★★
3	Main Battery & AA Specialist -5% main battery reload time. +10% continuous AA damage. ★★	Fill the Tubes -10% torpedo tubes reload time.	Adrenaline Rush -0.2% reload time of all armaments per 1% HP lost +0.2% AA continuous damage per 1% HP lost. ★★	Inertial Fuse for HE Shells +25% armor penetration of HE shells Base fire chance reduced by half.	Superintendent +1 charge to all consumables. ★★	Survivability Expert +350 HP per ship tier. ★★
4	Main Battery & AA Expert +20% main battery range. +15% flak damage.	Swift in Silence So long as the ship remains undetected: +8% ship speed +5% main battery reload time.	Radio Location Shows the direction to the nearest enemy ship. The enemy is alerted that a bearing has been taken..	Fearless Brawler +1 flak burst per salvo. -10% main battery reload when ship is spotted.	Concealment Expert -10% detectability range of the ship. ★★★	Dazzle For 15 seconds after you are detected: * +20% dispersion of enemy shells fired at you. * +8% ship speed.
Key: ★★★ - Extremely Useful      ★★ - Frequently Useful      ★ - Occasionally Useful     No stars - Not Useful

Consumables

Cossack B equips the following consumables:

• Slot 1: Damage Control Party 
• Slot 2: Short-Burst Smoke Generator  – 6 charges
• Slot 3: Engine Boost  – 3 charges
• Slot 4: Short-Range Hydro-Acoustic Search  – 3 charges

Camouflage

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

Signals

Cossack B captains should mount standard signal flags to improve the ship's performance in battle. Sierra Mike () signal flags are highly recommended to increase the ship's top speed. Victor Lima () and India X-Ray () flags can be mounted to improve the ship's main battery fire chance. November Foxtrot () is also recommended to reduce consumable cooldown timers.

Recommended Signal Flags
Combat
Juliet Charlie -100% to the risk of magazine detonation. ★★	Juliet Yankee Bissotwo -20% to flooding duration.	India Yankee -20% to fire duration. ★★	Hotel Yankee -20% to damage received when ramming the enemy. +50% to damage dealt when ramming the enemy.	Victor Lima +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. +4% chance of torpedoes causing flooding. ★★	India X-Ray +1% chance for HE bombs and shells with a caliber above 160mm causing a fire. +0.5% chance for bombs and smaller shells causing a fire. +5% to the risk of your ship's magazine detonating. ★
Juliet Whiskey Unaone +15% chance of causing flooding. +5% to the risk of your ship's magazine detonating. ★	Mike Yankee Soxisix +5% to secondary battery maximum firing range. -5% to maximum dispersion of secondary battery shells. -5% to secondary battery loading time.	November Echo Setteseven +5% continuous AA damage at all ranges. +5% damage from flak bursts. ★	Sierra Mike +5% to the ship's maximum speed. ★★★	November Foxtrot -5% reload time on all consumables. ★★	India Delta +20% to the amount of HP recovered when Repair Party  is used.
X-Ray Papa Unaone +10% action time of a Smoke Generator . ★★	Sierra Bravo +10% action time of Hydroacoustic Search  -10% reload time of Defensive AA Fire . ★

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

Gallery

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  Cossack can single-fire her torpedoes, much like the other British ships.

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Historical Info

HMS Cossack, 1938

Construction

Builder: Vickers-Armstrong Ltd,
   Newcastle-upon-Tyne, United Kingdom

Laid down: 9 June 1936

Launched: 8 June 1937

Commissioned: 7 June 1938

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Specifications

Displacement: 1,921 tons, standard

Length: 115m

Beam: 11.13m

Draft: 3.43m

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Machinery

3 Admiralty triple-drum boilers,
   2 Parsons geared turbines

505-515 tons of fuel

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Performance

36 knots at 44,000 shaft horsepower

5,700 nautical miles at 15 knots

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Armament

Main

Eight (4x2) 120mm/45 QF Mk XII guns

Anti-Aircraft

Four (1x4) 40mm QF 2-pdr Mk VIII guns

Eight (2x4) 12.7mm QF Mk III guns

Torpedoes

Four (1x4) 533mm launchers

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Complement

190 men (peace time) – 250 men (war time)

HMS Cossack at anchor, date and location unknown.

History

Design

First thoughts of a new destroyer class percolated within the Royal Navy as early as 1934, when became clear that a versatile and powerful destroyer leader design was needed which would displace not more than 1,850 tons to not break the 1930 London Naval Treaty. The intended tasks of such a vessel would range from patrol and guard duties over to escorting convoys, to supporting destroyer flotillas, up to defending fleets, convoys, and ports against air attacks. To fulfill these tasks, it was concluded that a heavy artillery component would be required, so early designs proposed ten (10) 120mm guns in five turrets, several machine guns for air defense, and also torpedo tubes in case of night battles. The idea of installing the 40mm 2-pdr “PomPoms” was quickly discarded, as such installations would only increase the displacement, and they could always be installed later on in case of hostilities, as in those cases the restrictions of any treaty would no longer be a factor.

As the design progressed through 1935, it was decided to abandon the idea of five turrets and incorporate the “PomPoms” into the design. This happened in part as a result of the American Somers-class, which also featured four twin turrets, and the British designers did not want to cause a naval arms race by building even stronger ships.

The initial configuration displaced 1,854 tons, and had machinery which allowed up to 44,000 shaft horsepower for a maximum speed of 36 knots. However, when fully loaded up to 2,519 tons displacement, this speed would drop to 32.5 knots. Like most destroyers of the British Navy, they had a very impressive cruising range of 5,700 statute miles, exceeding the operating range of many foreign destroyers. The armament consisted of four twin-mounted 120mm guns with a maximum elevation 40°, which were directed by a fire control system that could track both sea and air targets, giving the main armament a theoretical ability to engage low flying aircraft. One quadruple 40mm 2-pdr and two .50-caliber machine guns would ensure close range AA defense, while one quadruple 533mm torpedo launcher provided additional striking power against surface units. The anti-submarine armament consisted of 20 depth charges.

In 1936, seven ships were ordered; these began to enter service in 1938. Due to political reasons, and the increasing threat of foreign navies — particularly Germany, which had begun to build very large and combat capable destroyers — nine more were ordered only a few months after the first seven. In 1939, three further vessels were built for the Royal Australian Navy, and four more for the Royal Canadian Navy followed in 1940. Canada also built four more ships in their own shipyards, bringing the final tally to twenty-seven (27) vessels of the class constructed. Christened the Tribal class, all twenty-seven ships were named after indigenous tribes of native peoples found throughout the British Empire (such as Sikh, Iroquois, and Warramunga).

After the onset of World War II, aircraft proved to be a very effective counter to destroyers, and two Tribal-class ships were sunk by air attacks (HMS Afridi and HMS Gurkha). In the interest of increasing their anti-aircraft defenses, the X-turret was removed and replaced by a twin high-angle 102mm dual purpose gun. The light and medium AA was similarly revised and modernized by adding 20mm Oerlikons and the famous 40mm Bofors, which eventually replaced the 2-pdr quadruple and the .50-caliber machine guns. Additionally, the number of depth charges was increased to up to 46 as the ships saw increasing service performing convoy duties during the Battle of the Atlantic. As it became available, members of the class also received radar equipment; however, this only happened from 1944 onwards.

Service

Historical Inaccuracies

• The Admiralty light mottle type camouflage is actually the historical camouflage of HMS Matabele (F26). Cossack was never camouflaged; she was painted in overall Mediterranean White with a red funnel band during the pre-war period and was in solid grey at the time of her loss.

Historical Gallery

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  Ship's crest of HMS Cossack.

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  Cossack under way in 1938.

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  Cossack in port.

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  Photos of battle damage sustained by Cossack on 13 April 1940 near Narvik, Norway.

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  The remains of Cossack after being struck by a torpedo from a German submarine on 23 October 1941.

References

• HMS Cossack (F03) - Wikipedia
• Tribal-class destroyer (1936) - Wikipedia
• World of Warships Museum: HMS Cossack - News - World of Warships

Ship Change Log

See here for links to Update notes.

• Added to the game in Update 0.9.10.
• Update 0.9.11:
  • Fixed geometry and textures of the ship.

Ships of U.K.

Destroyers