Jupiter '42

13.5

Destroyer | U.K. | Tier VII

Tech Tree Position

Battle Levels

12345678910

VII

Special

Jupiter '42 — British special premium Tier VII destroyer.

The J-class was a group of 24 destroyers built for the Royal Navy between 1937 and 1941. They were intended as a smaller alternative to the preceding Tribal-class destroyers, with heavier torpedo armament but reduced main battery armament. The design also included a new two boiler room layout that allowed for a single funnel and resulted in a smaller hull profile and better AA firing arcs.

Jupiter '42 was the final vessel of the J-class destroyers, and was laid down September 28, 1937 and launched October 27, 1938. She began the war as part of the 7th destroyer flotilla, serving in convoy escort and blockade runner intercept duty until 1940.

In 1941 she joined Force Z, which was formed in response to increased Japanese aggression in the South Pacific, and sailed to Singapore but was not present during the December 8th attack. In early 1942 she sank the Japanese submarine I-60, and joined the ABDA cruiser force during the Battle of the Java Sea, where she would sink after striking a Dutch mine.

Jupiter '42 was first released for sale on 16 Feburary 2024.

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	9.2	12	105			2,500		0	420,000

	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 ()
Jupiter '42	14,300	6	16	3	1	2/1/1	1			0	600,000

	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 VII	0.5	120	7.2	18,433	59	7		0	430,000

	IDS_SHIP_PARAM_SUO_INCREASE_DIST (%)	Maximum Firing Range (km)		Research price (exp)	Purchase price ()
Mk VII mod. 2		0		0	350,000

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 44,000 hp	36		0	405,000

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4

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.

The Ship

Jupiter '42 is a British destroyer that offers a more aggressive play style than the Tier VII tech tree destroyer Jervis. Her concealment is excellent, and has improved high damage AP shells. In exchange, she has less torpedo armament and no HE shells.

Her hull is the same as her sister. Her hull is covered with 16 mm plating, thin enough to allow most AP shells to pass through without arming but thick enough to bounce light cruiser AP shells at steep angles. Her superstructure is 10 mm thick and the gun mount plates are 6 mm thick. Like most destroyers, she is vulnerable to HE rounds, and large-caliber HE rounds will easily knock out her modules.

Jupiter '42 has a base speed of 36 knots with a 590 m turning circle. Her rudder shift is 3.5 seconds, hitpoint pool is 14,300, and base detectability is 6.3 km. Her hitpoint total can be increased to 16,750 using Survivability Expert, and her concealment can be reduced to 5.7 km using Concealment Expert, both of which are recommended.

Armament

Jupiter '42 uses the same guns and turret layout as her sister Jervis, six 120 mm guns in an AB-X turret layout, with a pair of superfiring turrets in the front and one in the rear. The rear turret is able to rotate 360 degrees, making it easy to keep all guns on target when facing forward. She exclusively fires AP shells, but they have traits that are normally reserved for high tier British destroyers. Her AP shells can be reliably used against enemy destroyers, due to their improved penetration angles and reduced arming threshold and fuse time. Her base AP damage is higher than Jervis at 2500, and her reload time is increased to 6.5 seconds. Her firing range is 12.1 km. Her shell ballistics are also the same as Jervis, with low velocity overall and particularly floaty when used beyond 10 km. These traits are excellent for dealing with enemy destroyers, but she will struggle to deal with angle and heavily armored targets.

She carries a single quintuple launcher; like other UK cruisers and destroyers, she can single launcher her torpedoes. They have a 7 km range and reload in 120 seconds. Their damage is high for Tier VII at 18,433. Her torpedoes are not intended to be her primary means of attack, but a well-placed torpedo salvo can be devastating against most ships she faces.

She has another interesting trait. She is one of the few destroyers able to potentially, but not likely, achieve a secondary armament kill. Where a second torpedo launcher would normally be, she instead has a 102 mm secondary gun. This gun has a short firing range of 4 km and will play no part in most engagements, but can result in the entertaining secondary hit ribbon or even kill on occasion.

Consumables

Jupiter '42 carries a consumable set that captains of the British destroyer line will be familiar with, but also gains an Engine Boost . She has access to Damage Control Party , Short-Burst Smoke Generator , Short-Range Hydro-Acoustic Search , and Engine Boost . The smoke screen has a short duration and short cooldown between uses. It is best used defensively as a tool to break line of sight with an adversary, whether this be ambushing an unsuspecting target and then disappearing before they can retaliate or as means of escaping a bad situation. The Short-Range Hydro-Acoustic Search  is primarily intended for defensive use, with an extended action time but short ship acquisition range.

Anti-Aircraft

Unlike Jervis, Jupiter '42 carries long-range anti-aircraft armament. Her short, mid, and long-range auras extend out to 1.5, 2.5, and 4 km respectively. Her short- and mid-range continuous damage is half of what Jervis has at 18 and 42 dps respectively. The majority of her damage will come from aircraft straying into the single flak cloud from her long-range AA gun, but that relies on the pilot making a mistake. The short range of her other armament will make dealing with aircraft difficult and engagement times short. Her best defense against aircraft will be avoiding detection, using her smoke screen if necessary. Captains will need to be wary of leaving her AA enabled around aircraft, as the long range AA will extend her air detectability to 4 km once it fires.

Battle Performance

Jupiter '42 has a play style that encourages short-ranged knife fighting with other destroyers and lightly armored vessels. She performs well at cap contesting and zoning out enemy destroyers. Her low detection range is good even by Tier VIII and XI standards, and most destroyers she does not outspot she will be able to counter spot when she is detected herself. She excels at ambushing destroyers that are not main battery-focused, with daring captains able to use her Engine Boost  and Short-Range Hydro-Acoustic Search  as offensive tools to charge in and rush isolated destroyers.

Captains should be aware of the ships that they are able to effectively engage and those it would be best to run from. Her DPM is average, and sustained firefights are not recommended against destroyers or cruisers with high DPM . Instead, a more defensive playstyle is recommended here, using her high-damage AP to deliver a few damaging salvoes and then her Short-Burst Smoke Generator  or Engine Boost  to disengage.

Against armored cruisers or battleships, her torpedoes will be her most effective weapon. Her average main battery DPM and lack of HE shells make it difficult to deal with most armored targets with her guns. If the target is sailing away, chasing isn't recommended. If they are pushing, captains will need to skillfully target her high-damage torpedoes to significantly damage them.

Pros:

Excellent AP with high alpha, improved penetration angles, and reduced fuse timer and arming threshold.
High torpedo damage.
Excellent concealment for a Tier VII destroyer, as low as 5.7 km.
Long duration Short-Range Hydro-Acoustic Search .
Access to Engine Boost  consumable.

Cons:

Slow main battery reload.
Low number of torpedoes with long reload
No HE shells.
Poor AA defenses.

Research

As a premium ship, Jupiter '42 has no module upgrades to research.

Optimal Configuration

Jupiter '42 should be tailored toward improving her survivability and main battery firepower, with second priority going to her consumables. Her torpedoes are less impactful and should hold less priority than her guns.

Upgrades

The recommended upgrades are:

Slot 1: Main Armaments Modification 1
Slot 2: Engine Room Protection or Hydroacoustic Search Modification 1
Slot 3: Aiming Systems Modification 1
Slot 4: Steering Gears Modification 1

Commander Skills

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

Jupiter '42 equips the following consumables:

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

Camouflage

As a premium ship, Jupiter '42 comes with Default permanent camouflage and a set of permanent combat bonuses.

Signals

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

References

Ships of U.K.

Destroyers	II Medea • III Valkyrie • III Campbeltown • IV Wakeful • V Acasta • VI Icarus • VI Gallant • VII Jervis • VII Jupiter '42 • VIII Lightning • VIII Cossack • VIII Cossack B • IX Jutland • IX Somme • X Daring • X Druid
Cruisers	I Black Swan • II Weymouth • III Caledon • IV Danae • V Emerald • V Hawkins • V Exeter • VI Leander • VI Devonshire • VI London • VI Dido • VI Orion '44 • VII Fiji • VII Surrey • VII Belfast • VIII Edinburgh • VIII Albemarle • VIII Cheshire • VIII Tiger '59 • VIII Belfast '43 • VIII Hampshire • VIII Nottingham • VIII AL Cheshire • VIII STAR Edinburgh • IX Neptune • IX Drake • X Monmouth • X Minotaur • X Goliath • X Plymouth • X Gibraltar • X Defence • ★ Edgar
Battleships	III Bellerophon • III Indefatigable • III Dreadnought • IV Orion • IV Queen Mary • V Iron Duke • V Tiger • V Agincourt • VI Warspite • VI Queen Elizabeth • VI Renown • VI Repulse • VI Repulse B • VII King George V • VII Rooke • VII Hood • VII Nelson • VII Duke of York • VII Collingwood • VII Renown '44 • VII Duke of Bronte • VIII Monarch • VIII Hawke • VIII Vanguard • IX Lion • IX Duncan • IX Marlborough • IX Scarlet Thunder • X Conqueror • X St. Vincent • X Thunderer • X Incomparable • ★ Devastation
Aircraft Carriers	IV Hermes • VI Furious • VI Ark Royal • VIII Implacable • VIII Indomitable • VIII Colossus • X Audacious • X Malta • ★ Eagle

Destroyers

Japan	II Tachibana • II Umikaze • II Tachibana Lima • III Wakatake • IV Isokaze • V Minekaze • V Fūjin • V Kamikaze • V Kamikaze R • V Mutsuki • VI Fubuki • VI Hatsuharu • VI Shinonome B • VI Shinonome • VII Akatsuki • VII Shiratsuyu • VII Yūdachi • VIII Akizuki • VIII Kagerō • VIII Asashio • VIII HSF Harekaze II • VIII Asashio B • VIII HSF Harekaze • VIII AL Yukikaze • IX Yūgumo • IX Kitakaze • IX Minegumo • IX STAR Kitakaze • X Shimakaze • X Harugumo • X Hayate • ★ Yamagiri
U.K.	II Medea • III Valkyrie • III Campbeltown • IV Wakeful • V Acasta • VI Icarus • VI Gallant • VII Jervis • VII Jupiter '42 • VIII Lightning • VIII Cossack • VIII Cossack B • IX Jutland • IX Somme • X Daring • X Druid
France	II Enseigne Gabolde • III Fusilier • IV Bourrasque • V Jaguar • V Siroco • VI Guépard • VI Aigle • VII Vauquelin • VIII Le Fantasque • VIII Le Terrible • IX Mogador • X Kléber • X Marceau • X Kléber CLR
U.S.S.R.	II Storozhevoi • III Derzki • IV Izyaslav • V Gremyashchy • V Podvoisky • V Okhotnik • VI Gnevny • VII Minsk • VII Leningrad • VII Tashkent '39 • VIII Ognevoi • VIII Kiev • IX Udaloi • IX Tashkent • IX Neustrashimy • X Khabarovsk • X Grozovoi • X Delny • ★ Zorkiy
U.S.A.	II Sampson • II Smith • III Wickes • IV Clemson • V Nicholas • V Hill • VI Farragut • VI Monaghan • VII Mahan • VII Sims • VII Sims B • VIII Benson • VIII Kidd • IX Fletcher • IX Benham • IX Halford • IX Black B • IX Black • X Gearing • X Somers • X Forrest Sherman • ★ Joshua Humphreys
Germany	II V-25 • III G-101 • IV V-170 • V T-22 • VI Ernst Gaede • VI T-61 • VI Karl von Schönberg • VII Leberecht Maass • VII Z-31 • VII Z-39 • VIII Z-23 • VIII Gustav-Julius Maerker • VIII Z-35 • IX Z-46 • IX Felix Schultz • IX Z-44 • IX ZF-6 • X Z-52 • X Elbing • X Z-42
Pan-Asia	II Longjiang • III Phra Ruang • IV Shenyang • V Jianwei • VI Fushun • VI Anshan • VII Gadjah Mada • VIII Hsienyang • VIII Siliwangi • VIII Loyang • VIII Fenyang • VIII Loyang B • VIII Ship Smasha • IX Chung Mu • X Yueyang • X Lüshun • ★ Kunming
Spain	X Álvaro de Bazán
Europe	II Tátra • III Romulus • IV Klas Horn • V Visby • V Muavenet • VI Västerås • VI Stord • VII Skåne • VII Grom • VII Błyskawica • VII Stord '43 • VIII Öland • VIII Split • VIII Orkan • IX Östergötland • IX Lambros Katsonis • IX Velos • IX Friesland • IX Jäger • X Halland • X Gdańsk • X Småland • X Ragnar • ★ Dalarna
Netherlands	IX Groningen • X Tromp
Italy	II Curtatone • III Nazario Sauro • IV Turbine • V Maestrale • VI Aviere • VI Leone • VII Luca Tarigo • VII FR25 • VIII Vittorio Cuniberti • IX Adriatico • IX Paolo Emilio • X Attilio Regolo
Commonwealth	III Vampire • VII Haida • VII Huron • X Vampire II
Pan-America	VI Juruá

Games

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Tools

Jupiter '42

Modules

Compatible Upgrades