Difference between revisions of "IJN Mikuma"

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== Description ==
 
== Description ==
 
<!-- ''In the first part of the description, cover the history of the ship's creation and military application. In the second part, tell the reader about using this ship in the game. Add a screenshot: if a beginner player has a hard time remembering vehicles by name, a picture will help them identify the ship in question.'' -->
 
<!-- ''In the first part of the description, cover the history of the ship's creation and military application. In the second part, tell the reader about using this ship in the game. Add a screenshot: if a beginner player has a hard time remembering vehicles by name, a picture will help them identify the ship in question.'' -->
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The '''{{Specs|name}}''' (三隈, [[Abbreviations#.28JP.29_Naval|namesake]]: Mikuma River) is a premium rank {{Specs|rank}} Japanese light cruiser {{Battle-rating}}. It was introduced in [[Update 1.97 "Viking Fury"]] purchasable in-game with Golden Eagles {{ge}}. The IJN Mikuma was included in a [[wt:en/news/7087-shop-new-packs-and-a-unique-bundle-en|premium pack]] in March 2021, but it was removed from the store after the [[wt:en/news/7417-shop-war-thunder-birthday-sale-in-gaijin-net-store-en|9th Anniversary Sale]].
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The second of the Mogami-class cruisers, the Mikuma (三隈, [[Abbreviations#.28JP.29_Naval|namesake]]: Mikuma River) was designed as a heavy cruiser right from the start but, due to restrictions from the London Naval Treaty, the Imperial Japanese Navy mounted turrets with 155 mm guns in order to pass it off as a light cruiser. That the turrets were easy to remove and replace and that there were a number of 20 cm turrets lying around in storage that would perfectly fit into the ships was considered a convenient coincidence.
  
−
As a part of the Mogami-class cruisers, the {{PAGENAME}} was designed as a heavy cruiser right from the start, but restrictions from the London Naval Treaty forced the Imperial Japanese Navy to mount smaller but more numerous 155 mm guns and pass it off as a light cruiser instead. As the Mogami-class were built around high top speed and firepower, the Mikuma's lighter armaments result in improved mobility while having the same protection as her heavier-armed sister ship.
+
Mikuma was introduced in [[Update 1.97 "Viking Fury"]] purchasable in-game with Golden Eagles {{ge}}. It was included in a [[wt:en/news/7087-shop-new-packs-and-a-unique-bundle-en|premium pack]] in March 2021, but it was removed from the store after the [[wt:en/news/7417-shop-war-thunder-birthday-sale-in-gaijin-net-store-en|9th Anniversary Sale]]. Compared to her tech-tree counterpart, the [[IJN Suzuya|Suzuya]], Mikuma's only two difference is that she features slightly more crew (958 vs. 918), and that she carries one less scout plane in her visual model (3 vs 4 on Suzuya), although only two can be launched from both ships. As the Mogami-class were built around high top speed and firepower, the Mikuma's lighter armaments result in improved mobility while having the same protection as her heavier-armed sister [[IJN Mogami|Mogami]].
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Compared to her tech-tree counterpart, the [[IJN Suzuya|Suzuya]], Mikuma's only two difference is that she features slightly more crew (958 vs. 918), and that she carries one less scout plane in her visual model (3 vs 4 on Suzuya), although only two can be launched from both ships.
 
  
 
== General info ==
 
== General info ==
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Being essentially a heavy cruiser with light cruiser guns, the Mikuma is generally well-protected. Mikuma's citadel is protected with ~100 mm of RHA at the belt, 65 mm at the angled top, and 35 mm at the deck, which is strong enough to bounce several shots at longer range especially when angled. Her magazine, which sat on the waterline, is even better-protected with 140 mm at the belt and 40 mm at the deck. While most of her modest 951 crewmembers were packed inside her midship section, angling the ship will mitigate the issue and make them less vulnerable.
 
Being essentially a heavy cruiser with light cruiser guns, the Mikuma is generally well-protected. Mikuma's citadel is protected with ~100 mm of RHA at the belt, 65 mm at the angled top, and 35 mm at the deck, which is strong enough to bounce several shots at longer range especially when angled. Her magazine, which sat on the waterline, is even better-protected with 140 mm at the belt and 40 mm at the deck. While most of her modest 951 crewmembers were packed inside her midship section, angling the ship will mitigate the issue and make them less vulnerable.
  
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Unfortunately, since the Mikuma was designed with the emphasis on high offensive capabilities and good mobility, some compromises were required to achieve the goal. The Mikuma, as with the other IJN cruisers, has very poor turret and shell elevator protection. With a measly 25 mm of armour plate, Mikuma's guns can be easily disabled even by an average destroyer-caliber guns. Additionally, Mikuma's greatest strength of having numerous Type 93 "Long Lance" torpedoes at her disposal is also her greatest weakness as half of the 24 "Long Lance" are stored just nearby the torpedo tubes, essentially acting as an ammo racks that can be detonated and cause severe damage to the ship.
+
Unfortunately, since the Mikuma was designed with the emphasis on high offensive capabilities and good mobility, some compromises were required to achieve the goal. The Mikuma, as with the other IJN cruisers, has very poor turret and shell elevator protection. With a measly 25 mm of armour plate, Mikuma's guns can be easily disabled even by an average destroyer-calibre guns. Additionally, Mikuma's greatest strength of having numerous Type 93 "Long Lance" torpedoes at her disposal is also her greatest weakness as half of the 24 "Long Lance" are stored just nearby the torpedo tubes, essentially acting as an ammo racks that can be detonated and cause severe damage to the ship.
  
 
=== Mobility ===
 
=== Mobility ===
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Despite her massive size and displacement, the Mikuma is tied with her sister ship [[IJN Suzuya|Suzuya]] and a smaller [[IJN Isuzu|Isuzu]] as the second fastest cruiser in the game (after a much smaller "scout cruiser" [[RN Attilio Regolo|Attilio Regolo]]) at 78 km/h (AB) or 67 km/h (RB). Owning to powerful 10 Kampon boilers powered four propeller shafts with 152,000 horsepower. With her high top speed, the Mikuma is capable of out-pacing almost every cruisers she will face and is able to closing in the gap at a faster rate.
 
Despite her massive size and displacement, the Mikuma is tied with her sister ship [[IJN Suzuya|Suzuya]] and a smaller [[IJN Isuzu|Isuzu]] as the second fastest cruiser in the game (after a much smaller "scout cruiser" [[RN Attilio Regolo|Attilio Regolo]]) at 78 km/h (AB) or 67 km/h (RB). Owning to powerful 10 Kampon boilers powered four propeller shafts with 152,000 horsepower. With her high top speed, the Mikuma is capable of out-pacing almost every cruisers she will face and is able to closing in the gap at a faster rate.
  
−
However, due to the aforementioned large size and displacement, the Mikuma is quite slow to decelerate and is slugglsh to handle at times. This can be detrimental, especially when it comes to dodging torpedoes and mines.
+
However, due to the large size and displacement, the Mikuma is quite slow to decelerate and sluggish to handle at times. This can be detrimental, especially when it comes to dodging torpedoes and mines.
  
 
{{NavalMobility}}
 
{{NavalMobility}}
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=== Primary armament ===
 
=== Primary armament ===
 
{{Specs-Fleet-Primary}}
 
{{Specs-Fleet-Primary}}
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<!--''Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells. Add a link to the main article about the weapon: <code><nowiki>{{main|Weapon name (calibre)}}</nowiki></code>. Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.''-->
 
{{main|155 mm/60 3rd Year Type (155 mm)}}
 
{{main|155 mm/60 3rd Year Type (155 mm)}}
  
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''Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells. Add a link to the main article about the weapon: <code><nowiki>{{main|Weapon name (calibre)}}</nowiki></code>. Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.''
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Mikuma's main armament consists of 15 x 155 mm/60 3rd Year Type cannons mounted in five triple turrets in A-B-Cs-X-Y setup. Due to the gun's setup, the Mikuma is able to deliver a full salvo at a steep 60 degrees angle, thus increasing the ship's protection effectiveness.
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 +
The 155 mm guns have three shell choice; a rudimentary HE shell with 3.39 kg of TNT equivalent, an APHEBC shell with high penetration (186 mm at 10 km) and a sizeable filler of 1.21 kg of TNT equivalent, and a HE-TF shell with the same filler as the HE shell, though is not useful due to the gun's slow reload and traverse. As with other similar guns, both shell has a high shell velocity at 920 m/s and thus were reasonably accurate at all ranges.
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 +
The guns have a rather mediocre rate of fire for its calibre at 6 RPM (10 second reload with ace crew) compared to other 150-155 mm guns with 7-8 RPM as baseline. This is made up with the sheer volume of rounds it can deliver for each salvo, with a well-aimed barrage capable of causing severe damage to the enemy ship.
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 +
{{:155 mm/60 3rd Year Type (155 mm)/Ammunition|155 mm Type 0 HE, 155 mm Type 91 APHE, 155 mm Type 0 HE-TF}}
  
 
=== Secondary armament ===
 
=== Secondary armament ===
 
{{Specs-Fleet-Secondary}}
 
{{Specs-Fleet-Secondary}}
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<!--''Some ships are fitted with weapons of various calibres. Secondary armaments are defined as weapons chosen with the control <code>Select secondary weapon</code>. Evaluate the secondary armaments and give advice on how to use them. Describe the ammunition available for the secondary armament. Provide recommendations on how to use them and which ammunition to choose. Remember that any anti-air armament, even heavy calibre weapons, belong in the next section. If there is no secondary armament, remove this section.''-->
 
{{main|5 inch/40 Type 89 (127 mm)}}
 
{{main|5 inch/40 Type 89 (127 mm)}}
  
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''Some ships are fitted with weapons of various calibres. Secondary armaments are defined as weapons chosen with the control <code>Select secondary weapon</code>. Evaluate the secondary armaments and give advice on how to use them. Describe the ammunition available for the secondary armament. Provide recommendations on how to use them and which ammunition to choose. Remember that any anti-air armament, even heavy calibre weapons, belong in the next section. If there is no secondary armament, remove this section.''
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Mikuma features 8 x 127 mm/40 Type 89 dual-purpose guns in four twin turrets placed around the funnel, which are reasonably effective against coastal boats and destroyers due to fast reload time. As with the main guns,  it has two shell choices of a basic HE shell and a HE-TF shell with slightly higher filler but much better shell velocity (910 m/s).
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Since Mikuma's dedicated anti-air weapons is quite weak, it is possible to use the 127 mm as a supplementary flak battery. Due to the HE-TF shell's high velocity, it can be surprisingly effective at longer ranges, though its performance gradually decreases as the enemy gets closer than 2 km.
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 +
{{:5 inch/40 Type 89 (127 mm)/Ammunition|127 mm HE, 127 mm HE-TF}}
  
 
=== Anti-aircraft armament ===
 
=== Anti-aircraft armament ===
 
{{Specs-Fleet-AA}}
 
{{Specs-Fleet-AA}}
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<!--''An important part of the ship's armament responsible for air defence. Anti-aircraft armament is defined by the weapon chosen with the control <code>Select anti-aircraft weapons</code>. Talk about the ship's anti-air cannons and machine guns, the number of guns and their positions, their effective range, and about their overall effectiveness – including against surface targets. If there are no anti-aircraft armaments, remove this section.''-->
 
{{main|25 mm/60 Type 96 (25 mm)|Type 93 (13.2 mm)}}
 
{{main|25 mm/60 Type 96 (25 mm)|Type 93 (13.2 mm)}}
  
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''An important part of the ship's armament responsible for air defence. Anti-aircraft armament is defined by the weapon chosen with the control <code>Select anti-aircraft weapons</code>. Talk about the ship's anti-air cannons and machine guns, the number of guns and their positions, their effective range, and about their overall effectiveness – including against surface targets. If there are no anti-aircraft armaments, remove this section.''
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The Mikuma's dedicated anti-air armaments consists of 8 x 25 mm Type 96 autocannons and 4 x 13.2 mm Type 93 machine guns, both placed in a twin mounts around the amidship. These AA armaments are quite light for her size and is largely useless beyond 2.5 km range, though it can works well in tandem with the secondary 127 mm guns, a skilled enemy pilot will be able to slip past the defence and attack the ship. Thus, it is always recommended to man the gun yourselves when the enemy gets too close.
  
 
=== Additional armament ===
 
=== Additional armament ===
 
{{Specs-Fleet-Additional}}
 
{{Specs-Fleet-Additional}}
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<!--''Describe the available additional armaments of the ship: depth charges, mines, torpedoes. Talk about their positions, available ammunition and launch features such as dead zones of torpedoes. If there is no additional armament, remove this section.''-->
 
{{main|Type 93 Model 1, Mod 2 (610 mm)}}
 
{{main|Type 93 Model 1, Mod 2 (610 mm)}}
  
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''Describe the available additional armaments of the ship: depth charges, mines, torpedoes. Talk about their positions, available ammunition and launch features such as dead zones of torpedoes. If there is no additional armament, remove this section.''
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The Mikuma features 24 x 610 mm Type 93 Model 1 Mod 2 "Long Lance" torpedoes launched from a pair of triple launchers on each sides of the seaplane catapults. Twelve were pre-loaded inside the launchers, while the other half were stored in ready racks near the launcher. With a large quantities of the dreaded "Long Lance" torpedoes, the Mikuma is capable of sinking several ships at longer ranges (including battleships) and capable of doing so multiple times (especially in Arcade). Although the launchers have a restricted arc and requires showing full broadsides to the enemy, exposing the ship to damage in the process.
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 +
However, since the Mikuma is already packed with several heavy weapons, Japanese engineer were unable to put the extra "Long Lance" storages at a safer place. As mentioned in the "Survivability and armour" section, these extra torpedoes are essentially external ammo racks that can be detonated and is detrimental to Mikuma's survival. Thus, it is recommended to unload these torpedoes when playing in a map where torpedoes are less useful, such as maps with numerous islets and covers.
  
 
=== Scout plane ===
 
=== Scout plane ===
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{{main|E7K2}}
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{{Specs-Fleet-Plane}}
  
 
Located amidships are two catapults carrying one E7K2 scout plane each (the E7K2 stored on the trolley is not available) which provides unique offensive and defensive abilities, expanding tactical options. Ship-launched scout planes fly just like regular tree units but lack munition choices and cockpit views. The E7K2 is equipped with only defensive machine gun turrets (ventral as well as dorsal) and carries 4 x 60 kg bombs. It also has the scout plane ability to cap zones and lay down smoke cover (up to 3 times). Captains will be wise to remember to utilize the aircraft and consider when best to use it, for example to cap a point early or late in the match, to create a smoke screen to stymie enemy bombardment and repair, to attack enemy units directly, or perhaps something completely new! Carrying a heavier bomb load than most other scout planes, this unit has a very good chance to sink enemy boats or even a destroyer.
 
Located amidships are two catapults carrying one E7K2 scout plane each (the E7K2 stored on the trolley is not available) which provides unique offensive and defensive abilities, expanding tactical options. Ship-launched scout planes fly just like regular tree units but lack munition choices and cockpit views. The E7K2 is equipped with only defensive machine gun turrets (ventral as well as dorsal) and carries 4 x 60 kg bombs. It also has the scout plane ability to cap zones and lay down smoke cover (up to 3 times). Captains will be wise to remember to utilize the aircraft and consider when best to use it, for example to cap a point early or late in the match, to create a smoke screen to stymie enemy bombardment and repair, to attack enemy units directly, or perhaps something completely new! Carrying a heavier bomb load than most other scout planes, this unit has a very good chance to sink enemy boats or even a destroyer.
  
 
== Usage in battles ==
 
== Usage in battles ==
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''Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don't try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).''
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<!-- ''Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don't try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).'' -->
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With a combination of strong protection, large number of 155 mm guns, high top speed, and large amounts of Long Lance torpedoes, the Mikuma is highly versatile in terms of playstyle. The ship is capable to act as a spearhead by getting close to the enemy using its fast top speed and deal high burst damage to quickly dispatch enemy ship, or staying behind as a support and dealing damage using its guns and large number of torpedoes. However, the Mikuma does still suffer from a common weakness of Japanese cruisers, namely the poorly-protected turrets and lacklustre anti-air defence.
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A common mistake made by many "heavy light cruiser" players is to venture too deep into the enemy territory due to their fast speed and heavy protection also applies with the Mikuma. To prevent from overextending and exposing yourself as a target in the process, situational awareness is key. Always look at the minimap to make sure you're not getting to close to the enemy, and make sure to find a way to retreat before others notice you. Knowing the type of enemy ships you face is also beneficial as the Mikuma has a high burst damage potential, and knowing where to shoot can also help destroy the enemy faster.
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;Enemies worth noting
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* [[Brooklyn (Family)|Brooklyn-class]] - While these US light cruisers are similar to the Mikuma in terms of main armament (15 x 152 mm guns), the Brooklyns are more specialized in gunnery compared to the Mikuma, with them sacrificing speed and torpedoes for absurd rate of fire of up to 10 rounds per minute (with an aced crew). The results of a 1-vs-1 fight between both ships were thus often depending on who managed to deal a crippling damage against the other's main turrets first. Mikuma's paper-thin turrets can be easily disabled by a few accurate salvoes, while Brooklyn's has a large magazine sitting way above the waterline that can cause devastating damage if it detonates.
  
 
=== Pros and cons ===
 
=== Pros and cons ===
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* High top speed for such a large ship (78 (AB)/67 km/h (RB))
 
* High top speed for such a large ship (78 (AB)/67 km/h (RB))
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* Features the same hull as the Mogami heavy cruiser; able to withstand a fair amount of enemy fire before sinking
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* Features the same hull as the [[IJN Mogami|Mogami]] heavy cruiser; able to withstand a fair amount of enemy fire before sinking
−
* Numerous powerful 155 mm guns (5 turrets with 3 guns each, 15 in total)
+
* Numerous powerful 155 mm guns (5 turrets with 3 guns each, 15 in total) with good coverage
 
* 24 Long Lance torpedoes which have the capability to heavily damage battleships and wreck everything else
 
* 24 Long Lance torpedoes which have the capability to heavily damage battleships and wreck everything else
 
* Two scout planes
 
* Two scout planes
  
 
'''Cons:'''
 
'''Cons:'''
 +
 
* Poorly-protected main turrets and elevators, very easy to get disabled
 
* Poorly-protected main turrets and elevators, very easy to get disabled
−
* Like most Japanese cruisers, very weak anti-aircraft armament and secondary guns
+
* Mediocre anti-air defense, especially at closer ranges
 
* Wide hull makes evading enemy torpedoes difficult as it takes some time to manoeuvre the ship
 
* Wide hull makes evading enemy torpedoes difficult as it takes some time to manoeuvre the ship
 
* External Long Lance torpedo storages can be detonated when being hit
 
* External Long Lance torpedo storages can be detonated when being hit
 
* Torpedo arcs are limited, have to show almost full broadside to launch torpedoes
 
* Torpedo arcs are limited, have to show almost full broadside to launch torpedoes
 +
* The 155 mm guns lack the penetration and damage performance to reliably combat battleships or heavy cruisers Mikuma will face often
 +
* The importance of torpedoes makes Mikuma very map dependent: torpedoes are harder to use on maps with lots of cover, greatly reducing the potential of its most potent weapon
  
 
== History ==
 
== History ==
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Mikuma was the second of four Mogami-class cruisers. To comply with the Washington Naval Treaty, she was initially classified as a light cruiser with an official displacement of 8,500 tons. However, she was designed from the outset to be refitted with 8-inch (203 mm) guns and made into a heavy cruiser in a later refit. Her main armament consisted of fifteen 6-inch (152 mm) guns in five triple turrets, giving her one of the heaviest broadsides of any Treaty cruiser. She was also fitted with moderate anti-aircraft protection and four triple torpedo tube launchers carrying the deadly Type 93 "Long Lance" torpedoes.
 
Mikuma was the second of four Mogami-class cruisers. To comply with the Washington Naval Treaty, she was initially classified as a light cruiser with an official displacement of 8,500 tons. However, she was designed from the outset to be refitted with 8-inch (203 mm) guns and made into a heavy cruiser in a later refit. Her main armament consisted of fifteen 6-inch (152 mm) guns in five triple turrets, giving her one of the heaviest broadsides of any Treaty cruiser. She was also fitted with moderate anti-aircraft protection and four triple torpedo tube launchers carrying the deadly Type 93 "Long Lance" torpedoes.
  
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Mikuma's relatively heavy armour and large armament placed extensive strain on the 10000 ton limit that she was built to comply with. In fact, a British Admiral once quipped that "[The Japanese] are either lying to us or building [the Mogamis] out of cardboard." Indeed, the low displacement gave the Mikuma relatively weak stability, which was improved later on through the addition of large bulges on the sides of the hull. Mikuma was initially launched in 1935, but didn't see active service before the Second World War to enable Japanese engineers to install her bulges and replace her original 6-inch main armament with an improved 6-inch main battery.
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Mikuma's relatively heavy armour and large armament placed extensive strain on the 10,000-ton limit that she was built to comply with. In fact, a British Admiral once quipped that "[The Japanese] are either lying to us or building [the Mogamis] out of cardboard." Indeed, the low displacement gave the Mikuma relatively weak stability, which was improved later on through the addition of large bulges on the sides of the hull. Mikuma was initially launched in 1935, but didn't see active service before the Second World War to enable Japanese engineers to install her bulges and replace her original 6-inch main armament with an improved 6-inch main battery.
  
 
=== Operational history ===
 
=== Operational history ===
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;Skins
 
;Skins
 +
 
* [https://live.warthunder.com/feed/camouflages/?vehicle=jp_cruiser_mogami_mikuma Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
 
* [https://live.warthunder.com/feed/camouflages/?vehicle=jp_cruiser_mogami_mikuma Skins and camouflages for the {{PAGENAME}} from live.warthunder.com.]
  
 
== See also ==
 
== See also ==
 
''Links to articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 
''Links to articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 +
 
* ''reference to the series of the ship;''
 
* ''reference to the series of the ship;''
 
* ''links to approximate analogues of other nations and research trees.''
 
* ''links to approximate analogues of other nations and research trees.''

Latest revision as of 18:10, 4 August 2024

Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
This page is about the premium Japanese light cruiser IJN Mikuma. For other Mogami-class cruisers, see Mogami (Family).
IJN Mikuma
jp_cruiser_mogami_mikuma.png
GarageImage IJN Mikuma.jpg
StoreImage IJN Mikuma 003.jpg
StoreImage IJN Mikuma 005.jpg
IJN Mikuma
Japan flag.png Japan
V Rank
Battle rating:
AB RB SB
6.0 6.0 6.0
Class:
PREMIUM
Purchase:8 020 Specs-Card-Eagle.png
Show in game

Description

The second of the Mogami-class cruisers, the Mikuma (三隈, namesake: Mikuma River) was designed as a heavy cruiser right from the start but, due to restrictions from the London Naval Treaty, the Imperial Japanese Navy mounted turrets with 155 mm guns in order to pass it off as a light cruiser. That the turrets were easy to remove and replace and that there were a number of 20 cm turrets lying around in storage that would perfectly fit into the ships was considered a convenient coincidence.

Mikuma was introduced in Update 1.97 "Viking Fury" purchasable in-game with Golden Eagles Ge icon.png. It was included in a premium pack in March 2021, but it was removed from the store after the 9th Anniversary Sale. Compared to her tech-tree counterpart, the Suzuya, Mikuma's only two difference is that she features slightly more crew (958 vs. 918), and that she carries one less scout plane in her visual model (3 vs 4 on Suzuya), although only two can be launched from both ships. As the Mogami-class were built around high top speed and firepower, the Mikuma's lighter armaments result in improved mobility while having the same protection as her heavier-armed sister Mogami.

General info

Survivability and armour

Armourfront / side / back
Citadel105 / 100 / 35 mm
Main fire tower25 / 25 / 25 mm
Hull25 mm (steel)
Superstructure13 mm (steel)
Number of section9
Displacement15 057 t
Crew951 people

Being essentially a heavy cruiser with light cruiser guns, the Mikuma is generally well-protected. Mikuma's citadel is protected with ~100 mm of RHA at the belt, 65 mm at the angled top, and 35 mm at the deck, which is strong enough to bounce several shots at longer range especially when angled. Her magazine, which sat on the waterline, is even better-protected with 140 mm at the belt and 40 mm at the deck. While most of her modest 951 crewmembers were packed inside her midship section, angling the ship will mitigate the issue and make them less vulnerable.

Unfortunately, since the Mikuma was designed with the emphasis on high offensive capabilities and good mobility, some compromises were required to achieve the goal. The Mikuma, as with the other IJN cruisers, has very poor turret and shell elevator protection. With a measly 25 mm of armour plate, Mikuma's guns can be easily disabled even by an average destroyer-calibre guns. Additionally, Mikuma's greatest strength of having numerous Type 93 "Long Lance" torpedoes at her disposal is also her greatest weakness as half of the 24 "Long Lance" are stored just nearby the torpedo tubes, essentially acting as an ammo racks that can be detonated and cause severe damage to the ship.

Mobility

Speedforward / back
AB78 / 25 km/h
RB67 / 22 km/h

Despite her massive size and displacement, the Mikuma is tied with her sister ship Suzuya and a smaller Isuzu as the second fastest cruiser in the game (after a much smaller "scout cruiser" Attilio Regolo) at 78 km/h (AB) or 67 km/h (RB). Owning to powerful 10 Kampon boilers powered four propeller shafts with 152,000 horsepower. With her high top speed, the Mikuma is capable of out-pacing almost every cruisers she will face and is able to closing in the gap at a faster rate.

However, due to the large size and displacement, the Mikuma is quite slow to decelerate and sluggish to handle at times. This can be detrimental, especially when it comes to dodging torpedoes and mines.

Mobility Characteristics
Game Mode Upgrade Status Maximum Speed (km/h) Turn Time (s) Turn Radius (m)
Forward Reverse
AB Stock ___ ___
Upgraded 78 25
RB/SB Stock ___ ___
Upgraded 67 22

Modifications and economy

Repair cost
AB6 254 Sl icon.png
RB6 257 Sl icon.png
Crew training10 000 Sl icon.png
Experts800 000 Sl icon.png
Aces1 500 Ge icon.png
Research Aces1 340 000 Rp icon.png
Reward for battleAB / RB / SB
Talisman.png 2 × 450 / 600 / 50 % Sl icon.png
Talisman.png 2 × 190 / 190 / 190 % Rp icon.png
Modifications
Seakeeping Unsinkability Firepower
Mods new ship hull.png
Dry-Docking
Mods new ship rudder.png
Rudder Replacement
Mods new ship screw.png
Propeller Replacement
Mods new ship engine.png
Engine Maintenance
Mods ship damage control crew.png
Damage Control Division
Mods ship fire control crew.png
Fire Division
Mods engine smoke screen system.png
Smokescreen
Mods ship anti fragmentation protection.png
Shrapnel Protection
Mods ship venting.png
Ventilation
Mods new ship pumps.png
New Pumps
Mods ship ammo wetting.png
Ammo Wetting
Mods new aa caliber turrets.png
Anti-Air Armament Targeting
Mods tank ammo.png
155mm_jp_type91_navy_ap_ammo_pack
Mods new aux caliber turrets.png
Auxiliary Armament Targeting
Mods tank ammo.png
127mm_jp_type1_naval_aa_distant_fuse_he_ammo_pack
Mods new main caliber turrets.png
Primary Armament Targeting
Mods ship rangefinder.png
Improved Rangefinder
Mods shipSupportPlane.png
Hydroplane
Mods tank ammo.png
155mm_jp_type91_navy_he_tf_ammo_pack

Armament

Primary armament

5 х Turret3 x 155 mm/60 3rd Year Type cannon
Ammunition450 rounds
Vertical guidance-7° / 55°
Main article: 155 mm/60 3rd Year Type (155 mm)

Mikuma's main armament consists of 15 x 155 mm/60 3rd Year Type cannons mounted in five triple turrets in A-B-Cs-X-Y setup. Due to the gun's setup, the Mikuma is able to deliver a full salvo at a steep 60 degrees angle, thus increasing the ship's protection effectiveness.

The 155 mm guns have three shell choice; a rudimentary HE shell with 3.39 kg of TNT equivalent, an APHEBC shell with high penetration (186 mm at 10 km) and a sizeable filler of 1.21 kg of TNT equivalent, and a HE-TF shell with the same filler as the HE shell, though is not useful due to the gun's slow reload and traverse. As with other similar guns, both shell has a high shell velocity at 920 m/s and thus were reasonably accurate at all ranges.

The guns have a rather mediocre rate of fire for its calibre at 6 RPM (10 second reload with ace crew) compared to other 150-155 mm guns with 7-8 RPM as baseline. This is made up with the sheer volume of rounds it can deliver for each salvo, with a well-aimed barrage capable of causing severe damage to the enemy ship.

Penetration statistics
Ammunition Type of
warhead 		Penetration @ 0° Angle of Attack (mm)
1,000 m 2,500 m 5,000 m 7,500 m 10,000 m 15,000 m
Type 0 HE HE 36 36 36 36 36 36
Type 91 APHE APHEBC 313 269 210 165 131 93
Type 0 HE HE-TF 36 36 36 36 36 36
Shell details
Ammunition Type of
warhead 		Velocity
(m/s) 		Projectile
mass (kg) 		Fuse delay
(s) 		Fuse sensitivity
(mm) 		Explosive mass
(TNT equivalent) (kg) 		Ricochet
0% 50% 100%
Type 0 HE HE 920 55.79 0 0.1 3.39 79° 80° 81°
Type 91 APHE APHEBC 920 55.79 0.035 7 1.21 48° 63° 71°
Type 0 HE HE-TF 920 55.79 0 0.1 3.39 79° 80° 81°

Secondary armament

4 х Turret2 x 5 inch/40 Type 89 cannon
Ammunition400 rounds
Main article: 5 inch/40 Type 89 (127 mm)

Mikuma features 8 x 127 mm/40 Type 89 dual-purpose guns in four twin turrets placed around the funnel, which are reasonably effective against coastal boats and destroyers due to fast reload time. As with the main guns, it has two shell choices of a basic HE shell and a HE-TF shell with slightly higher filler but much better shell velocity (910 m/s).

Since Mikuma's dedicated anti-air weapons is quite weak, it is possible to use the 127 mm as a supplementary flak battery. Due to the HE-TF shell's high velocity, it can be surprisingly effective at longer ranges, though its performance gradually decreases as the enemy gets closer than 2 km.

Penetration statistics
Ammunition Type of
warhead 		Penetration @ 0° Angle of Attack (mm)
1,000 m 2,500 m 5,000 m 7,500 m 10,000 m 15,000 m
127 mm HE HE 25 25 25 25 25 25
127 mm HE-TF HE-TF 25 25 25 25 25 25
Shell details
Ammunition Type of
warhead 		Velocity
(m/s) 		Projectile
mass (kg) 		Fuse delay
(m) 		Fuse sensitivity
(mm) 		Explosive mass
(TNT equivalent) (kg) 		Ricochet
0% 50% 100%
127 mm HE HE 720 23 0 0.1 1.96 79° 80° 81°
127 mm HE-TF HE-TF 720 23 0 0.1 1.96 79° 80° 81°

Anti-aircraft armament

4 х Turret2 x 25 mm/60 Type 96 automatic cannon
Ammunition3000 rounds
Belt capacity15 rounds
Fire rate261 shots/min
2 х Turret2 x 13.2 mm Type 93 machine gun
Ammunition3600 rounds
Belt capacity30 rounds
Fire rate476 shots/min
Main articles: 25 mm/60 Type 96 (25 mm), Type 93 (13.2 mm)

The Mikuma's dedicated anti-air armaments consists of 8 x 25 mm Type 96 autocannons and 4 x 13.2 mm Type 93 machine guns, both placed in a twin mounts around the amidship. These AA armaments are quite light for her size and is largely useless beyond 2.5 km range, though it can works well in tandem with the secondary 127 mm guns, a skilled enemy pilot will be able to slip past the defence and attack the ship. Thus, it is always recommended to man the gun yourselves when the enemy gets too close.

Additional armament

Setup 124 x 610 mm Type 93 Model 1, Mod 2 torpedo
Main article: Type 93 Model 1, Mod 2 (610 mm)

The Mikuma features 24 x 610 mm Type 93 Model 1 Mod 2 "Long Lance" torpedoes launched from a pair of triple launchers on each sides of the seaplane catapults. Twelve were pre-loaded inside the launchers, while the other half were stored in ready racks near the launcher. With a large quantities of the dreaded "Long Lance" torpedoes, the Mikuma is capable of sinking several ships at longer ranges (including battleships) and capable of doing so multiple times (especially in Arcade). Although the launchers have a restricted arc and requires showing full broadsides to the enemy, exposing the ship to damage in the process.

However, since the Mikuma is already packed with several heavy weapons, Japanese engineer were unable to put the extra "Long Lance" storages at a safer place. As mentioned in the "Survivability and armour" section, these extra torpedoes are essentially external ammo racks that can be detonated and is detrimental to Mikuma's survival. Thus, it is recommended to unload these torpedoes when playing in a map where torpedoes are less useful, such as maps with numerous islets and covers.

Scout plane

Main article: 2 x E7K2

Located amidships are two catapults carrying one E7K2 scout plane each (the E7K2 stored on the trolley is not available) which provides unique offensive and defensive abilities, expanding tactical options. Ship-launched scout planes fly just like regular tree units but lack munition choices and cockpit views. The E7K2 is equipped with only defensive machine gun turrets (ventral as well as dorsal) and carries 4 x 60 kg bombs. It also has the scout plane ability to cap zones and lay down smoke cover (up to 3 times). Captains will be wise to remember to utilize the aircraft and consider when best to use it, for example to cap a point early or late in the match, to create a smoke screen to stymie enemy bombardment and repair, to attack enemy units directly, or perhaps something completely new! Carrying a heavier bomb load than most other scout planes, this unit has a very good chance to sink enemy boats or even a destroyer.

Usage in battles

With a combination of strong protection, large number of 155 mm guns, high top speed, and large amounts of Long Lance torpedoes, the Mikuma is highly versatile in terms of playstyle. The ship is capable to act as a spearhead by getting close to the enemy using its fast top speed and deal high burst damage to quickly dispatch enemy ship, or staying behind as a support and dealing damage using its guns and large number of torpedoes. However, the Mikuma does still suffer from a common weakness of Japanese cruisers, namely the poorly-protected turrets and lacklustre anti-air defence.

A common mistake made by many "heavy light cruiser" players is to venture too deep into the enemy territory due to their fast speed and heavy protection also applies with the Mikuma. To prevent from overextending and exposing yourself as a target in the process, situational awareness is key. Always look at the minimap to make sure you're not getting to close to the enemy, and make sure to find a way to retreat before others notice you. Knowing the type of enemy ships you face is also beneficial as the Mikuma has a high burst damage potential, and knowing where to shoot can also help destroy the enemy faster.

Enemies worth noting
  • Brooklyn-class - While these US light cruisers are similar to the Mikuma in terms of main armament (15 x 152 mm guns), the Brooklyns are more specialized in gunnery compared to the Mikuma, with them sacrificing speed and torpedoes for absurd rate of fire of up to 10 rounds per minute (with an aced crew). The results of a 1-vs-1 fight between both ships were thus often depending on who managed to deal a crippling damage against the other's main turrets first. Mikuma's paper-thin turrets can be easily disabled by a few accurate salvoes, while Brooklyn's has a large magazine sitting way above the waterline that can cause devastating damage if it detonates.

Pros and cons

Pros:

  • High top speed for such a large ship (78 (AB)/67 km/h (RB))
  • Features the same hull as the Mogami heavy cruiser; able to withstand a fair amount of enemy fire before sinking
  • Numerous powerful 155 mm guns (5 turrets with 3 guns each, 15 in total) with good coverage
  • 24 Long Lance torpedoes which have the capability to heavily damage battleships and wreck everything else
  • Two scout planes

Cons:

  • Poorly-protected main turrets and elevators, very easy to get disabled
  • Mediocre anti-air defense, especially at closer ranges
  • Wide hull makes evading enemy torpedoes difficult as it takes some time to manoeuvre the ship
  • External Long Lance torpedo storages can be detonated when being hit
  • Torpedo arcs are limited, have to show almost full broadside to launch torpedoes
  • The 155 mm guns lack the penetration and damage performance to reliably combat battleships or heavy cruisers Mikuma will face often
  • The importance of torpedoes makes Mikuma very map dependent: torpedoes are harder to use on maps with lots of cover, greatly reducing the potential of its most potent weapon

History

IJN Mikuma as seen in 1939.

IJN Mikuma was a ship of the Mogami class of light cruisers, built for the Imperial Japanese Navy (IJN) during the interwar period. Designed to be converted into heavy cruisers later on, they were the largest and most heavily-armed cruisers ever built until the introduction of the American Brooklyn-class several years later. Mikuma was commissioned in 1935, and converted into a heavy cruiser just before the outbreak of the Second World War. She saw action during the Battle of Sunda strait as well as the Battle of Midway; she was sunk during the latter battle when attacked by American carrier aircraft.

Design and development

Mikuma was the second of four Mogami-class cruisers. To comply with the Washington Naval Treaty, she was initially classified as a light cruiser with an official displacement of 8,500 tons. However, she was designed from the outset to be refitted with 8-inch (203 mm) guns and made into a heavy cruiser in a later refit. Her main armament consisted of fifteen 6-inch (152 mm) guns in five triple turrets, giving her one of the heaviest broadsides of any Treaty cruiser. She was also fitted with moderate anti-aircraft protection and four triple torpedo tube launchers carrying the deadly Type 93 "Long Lance" torpedoes.

Mikuma's relatively heavy armour and large armament placed extensive strain on the 10,000-ton limit that she was built to comply with. In fact, a British Admiral once quipped that "[The Japanese] are either lying to us or building [the Mogamis] out of cardboard." Indeed, the low displacement gave the Mikuma relatively weak stability, which was improved later on through the addition of large bulges on the sides of the hull. Mikuma was initially launched in 1935, but didn't see active service before the Second World War to enable Japanese engineers to install her bulges and replace her original 6-inch main armament with an improved 6-inch main battery.

Operational history

After her commissioning, Mikuma was dry docked once again to receive her revised 8-inch main armament; her 6-inch turrets were given to the battleship Yamato. Prior to the start of the Pacific War, Mikuma participated in the occupation of the Indochina area by Japanese forces. Assigned to Cruiser Division 7, she was still in the Southeast Asian theatre at the time of the Pearl Harbour attacks of December 1941.

IJN Mikuma shortly before her sinking. Note how her midsection has been completely destroyed by bombs.

After the Pearl Harbour attacks, Mikuma covered the invasion of British Borneo. There, she encountered an enemy force attacking Japanese landing personnel, composed of the American cruiser USS Houston and Australian cruiser HMAS Perth. Along with her escorting destroyers and sister ship Mogami, the Japanese force was able to destroy both cruisers quickly. Mikuma herself emerged relatively unscathed, and spent the latter part of early 1942 attacking shipping in the Southeast Asian area.

In June of 1942, Mikuma was one of the escort ships tasked with escorting the Japanese Carrier fleet on the attack on Midway Atoll. However, as they had left later than the rest of the fleet, they lagged behind and the order was given for them to slow down and proceed at a leisurely speed. However, the order was received late, and Mikuma, along with her sister ships Suzuya, Kumano and Mogami, was already within 90 kilometres of Midway atoll. They were spotted by an American submarine, and due to some communication errors, she was rammed by the Mogami. The two ships ended up stuck to each other, and the Japanese crews worked frantically to resolve the collision.

During this time, the two cruisers were attacked by a flight of B-17s from Midway that failed to score any hits. Finally, the ships were unstuck, and Mikuma was headed towards Wake Island when the pair of cruisers were attacked by 31 SBD Dauntless dive-bomber aircraft from the USS Enterprise. Mogami was hit by six bombs that caused severe damage, but managed to limp home. Mikuma was less lucky, having been hit extensively on her forecastle and superstructure by 5 American bombs. Eventually, the fires caused by the bombs caused her torpedoes to explode; this doomed the ship. As a result, the Mikuma was abandoned, and eventually capsized and sank.

Media

Skins

See also

Links to articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the series of the ship;
  • links to approximate analogues of other nations and research trees.

External links

References

  • Budge, K. (2007). Mogami Class, Japanese Heavy Cruisers. Retrieved January 12, 2021, from http://pwencycl.kgbudge.com/M/o/Mogami_class.htm
  • Chen, P. C. (2004). Heavy Cruiser Pensacola. Retrieved January 12, 2021, from https://ww2db.com/ship_spec.php?ship_id=39
  • Hackett, B., & Kingsepp, S. (1997). IJN Mikuma: Tabular Record of Movement. Retrieved January 12, 2021, from http://www.combinedfleet.com/mikuma_t.htm


Mitsubishi Shipbuilding Company Ltd.
Light Cruisers (CL) 
Kuma-class  IJN Tama
Sendai-class  IJN Sendai
Mogami-class  IJN Mikuma
Heavy Cruisers (CA) 
Furutaka-class  IJN Furutaka
Aoba-class  IJN Aoba
Myōkō-class  IJN Haguro
Tone-class  IJN Tone
Battleships (BB) 
Ise-class  IJN Hyuga
See also  Mitsubishi Heavy Industries, Ltd. (Post-War)

Japan light cruisers
Kuma-class  IJN Tama
  IJN Yubari*
Nagara-class  IJN Isuzu
Sendai-class  IJN Sendai
Agano-class  IJN Agano
Mogami-class  IJN Mikuma · IJN Suzuya
  * Unique ship

Japan premium ships
Motor torpedo boats  Type T-14 (mod. 1) · Type T-51a
Motor gun boats  Type 4 (Mod 4) · PG 02
Sub-chasers  Type K-8 No.13
Frigates  Akebono
Destroyers  IJN Satsuki · IJN Nenohi · IJN Hayanami · IJN Kiyoshimo · IJN Yuudachi · JDS Yūgure (DD-184)
Light cruisers  IJN Yubari · IJN Mikuma
Heavy cruisers  IJN Myoko
Battleships  IJN Yamashiro

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