Difference between revisions of "IJN Mutsuki"

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The '''{{specs|name}}''' is a rank {{specs|rank}} Japanese destroyer {{Battle-rating}}. It was introduced in [[Update 1.89 "Imperial Navy"]].
 
The '''{{specs|name}}''' is a rank {{specs|rank}} Japanese destroyer {{Battle-rating}}. It was introduced in [[Update 1.89 "Imperial Navy"]].
  
The {{PAGENAME}} is the first Destroyer most players will play within the Japanese tree, and its gameplay differs significantly from the [[Syonan]]. The {{PAGENAME}} is very oriented towards a long-range engagements, having the most powerful primary armament and second-most-powerful torpedo armament among its battle rating supplemented by relatively good armour. On the other hand it has only two very weak auxiliary guns and no dedicated anti-aircraft weaponry, making it poor in close-range encounters. Overall it's a difficult ship to play, posing a number of challenges to a player.
+
The {{PAGENAME}} is the first Destroyer most players will play within the Japanese tree, and its gameplay differs significantly from the [[Syonan]]. The ship is very much a destroyer geared towards long-range engagements, having the most powerful primary armament and the second-most-powerful torpedo setup among its battle rating, further increasing its performance in a gunnery battles by a relatively good armour. On the other hand, it has only two, very weak, auxiliary guns and no dedicated anti-aircraft weaponry, making it a poor performer in close-range encounters. Overall it's a difficult ship to play, posing a number of challenges to a player.
  
 
== General info ==
 
== General info ==
[[File:Torpedoed Mutsuki.png|thumb|Mutsuki is the first Japanese ship in the research tree to be able to survive a direct torpedo hit|left]]
+
[[File:Torpedoed Mutsuki.png|thumb|Mutsuki is the first Japanese ship in the research tree able to survive a direct torpedo hit|left]]
 
=== Survivability and armour ===
 
=== Survivability and armour ===
 
<!--Talk about the vehicle's armour. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and manoeuvrability. Evaluate the survivability of the primary and secondary armaments separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Save tips on preserving survivability for the "Usage in battles" section. If necessary, use a graphical template to show the most well-protected or most vulnerable points in the armour.-->
 
<!--Talk about the vehicle's armour. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and manoeuvrability. Evaluate the survivability of the primary and secondary armaments separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Save tips on preserving survivability for the "Usage in battles" section. If necessary, use a graphical template to show the most well-protected or most vulnerable points in the armour.-->
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The destroyer has armour protection and crew count that are above average, although the differences between destroyers in battle rating 3.7 are not high. Protection can be further enhanced with several modifications, although they're standard on all other comparable destroyers as well.
 
The destroyer has armour protection and crew count that are above average, although the differences between destroyers in battle rating 3.7 are not high. Protection can be further enhanced with several modifications, although they're standard on all other comparable destroyers as well.
  
The biggest issue in ship's survivability is its lack of anti-aircraft armament. It's equipped only with two 7.7 mm auxiliary machine guns that are hardly useful even against wooden gunboats and nearly incapable of taking down anything airborne. Thus, the {{PAGENAME}} has to rely on a cover of other ships or time fuze 120mm shells for protection.
+
The biggest issue in ship's survivability is its lack of anti-aircraft armament. It's equipped only with two 7.7 mm auxiliary machine guns that are hardly useful even against wooden gunboats and nearly incapable of taking down anything airborne. Thus, the {{PAGENAME}} has to rely on a cover of other ships or time fuse 120 mm shells for protection.
  
 
=== Mobility ===
 
=== Mobility ===
 
<!--Write about the ship's mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward and reverse speed.-->
 
<!--Write about the ship's mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward and reverse speed.-->
With the speed of 62 km/h before any modifications, the {{PAGENAME}} is the fastest destroyer within its battle rating. Decent speed is supplemented by good manoeuvrability, making it capable of choosing engagements and occasionally even avoiding torpedoes other destroyers would not.
+
With the speed of 62 km/h before any modifications, the {{PAGENAME}} is the fastest destroyer within its battle rating. Decent speed is supplemented by good manoeuvrability, making it capable of choosing engagements and occasionally even avoiding torpedoes other destroyers would not. The aced top speed is 69 km/h, which is easily enough to get around the battlefield. The rudder shift time is also very respectable, allowing for dodging patterns and making it a hard target to hit with torpedoes.
  
 
== Armament ==
 
== Armament ==
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All but the rearmost turrets aim forwards by default, making it relatively easy to hit targets ahead of her with her guns. Additionally, since they are all centrally mounted, it is possible to get all four turrets on target, although when making a turn rear-most turret has to travel over 180° to get a bearing on the target.
 
All but the rearmost turrets aim forwards by default, making it relatively easy to hit targets ahead of her with her guns. Additionally, since they are all centrally mounted, it is possible to get all four turrets on target, although when making a turn rear-most turret has to travel over 180° to get a bearing on the target.
  
Within its battle rating. {{PAGENAME}} has both the highest number of, and the highest calibre of primary guns. Its guns also have a second-highest muzzle velocity. That said though, it comes with a price - its shells are slow to reload, leading to the lowest sustained rate of fire among comparable destroyers. At the same time, damage output against warships is not as great as reload time might suggest, although still it's able to one-shot pretty much any boat bar some unlucky hits at full-health units.
+
Within its battle rating. {{PAGENAME}} has both the highest number of, and the highest calibre of primary guns. Its guns also have a second-highest muzzle velocity. That said though, it comes with a price - its shells are slow to reload, leading to the lowest sustained rate of fire among comparable destroyers. At the same time, damage output against warships is not as great as reload time might suggest, although still it's able to hullbreak almost any boat bar some unlucky hits at full-health units. Unfortunately for captains of the Mutsuki, the primary armament has a woeful turret traverse speed of 5°/sec (aced), making it difficult to switch targets and decreasing the overall versatility significantly. It would be very difficult to take the Mutsuki into more confined spaces as the turrets rotate far too slowly to deal with multiple torpedo boats or other craft.
  
Unlike most of the other nations, and typically to IJN rank III destroyers, it lacks armor-piercing shells for its primary armament what can be an issue when trying to deal with higher ranks. Alternative to standard HE is a researchable modification bringing in the Type 0 time fuze HE shells. Dedicated primarily for anti-aircraft duty, while very potent, the low number of fired shells and long reload time make for a hard choice and a very tricky way to protect itself from airborne attacks.
+
Unlike most of the other nations, and typically to IJN rank III destroyers, it lacks armour-piercing shells for its primary armament what can be an issue when trying to deal with higher ranks. Alternative to standard HE is a researchable modification bringing in the Type 0 time fuse HE shells. Dedicated primarily for anti-aircraft duty, while very potent, the low number of fired shells and long reload time make for a hard choice and a very tricky way to protect itself from airborne attacks.
  
 
=== Secondary armament ===
 
=== Secondary armament ===
<!--Some ships are fitted with weapons of various calibres. The secondary armament is defined as the weapon chosen with the control <code>Select secondary weapon</code>. Evaluate the secondary armament 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 anti-air armament, even heavy calibre weapons, belong in the next section.-->
+
[[File:Mutsuki-secondaries.jpg|left|thumb|[[Type 92 (7.7 mm)|Type 92]] machine guns are mounted on a platforms port and starboard to the Mutsuki's bridge.]]<!--Some ships are fitted with weapons of various calibres. The secondary armament is defined as the weapon chosen with the control <code>Select secondary weapon</code>. Evaluate the secondary armament 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 anti-air armament, even heavy calibre weapons, belong in the next section.-->
 
{{main|Type 92 navy (7.7 mm)|l1=Type 92 (7.7 mm)}}
 
{{main|Type 92 navy (7.7 mm)|l1=Type 92 (7.7 mm)}}
The secondary armament of the Mutsuki is two type 92 7.7 mm machine guns, each with 1,940 rounds of ammunition. The mountings are both abreast of the bridge, giving good all around coverage, but no overlapping arcs of fire except for the narrow frontal arc. They do virtually no damage and cannot be relied upon for defence against boats or aircraft.
+
The secondary armament of the Mutsuki is two type 92 7.7 mm machine guns, each with 1,940 rounds of ammunition. The mountings are both abreast of the bridge, giving good all around coverage, but no overlapping arcs of fire except for the narrow frontal arc. They do virtually no damage and cannot be relied upon for defense against boats or aircraft.
  
Note that these are auxiliary weapons, not anti-aircraft, therefore they won't use crew upgrades for anti-aircraft weaponry, even though they are a single-mount machine guns with a vertical guidance of +60 degrees, making them often automatically engage aircraft.
+
Note that these are auxiliary weapons, not anti-aircraft, therefore they won't use crew upgrades for anti-aircraft weaponry, even though they are a single-mount machine guns with a vertical guidance of +60 degrees, making them often automatically engage aircraft.{{Clear}}
  
 
=== Torpedo armament ===
 
=== Torpedo armament ===
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{{main|Type 90 (610 mm)}}
 
{{main|Type 90 (610 mm)}}
 
[[File:Mutsuki torpedo firing arcs.jpg|thumb|right|Graphic detailing port firing arcs for each of the launchers, with a total firing arc of 70° and an overlapping arc of 35°]]
 
[[File:Mutsuki torpedo firing arcs.jpg|thumb|right|Graphic detailing port firing arcs for each of the launchers, with a total firing arc of 70° and an overlapping arc of 35°]]
The IJN Mutsuki carries two triple centre mountings for 610 mm Type 90 torpedoes, along with 6 reload torpedoes in lockers alongside the rearmost funnel. This gives it the ability to reload mid battle. Each torpedo has a 480 gram TNT equivalent warhead, and travels for 7 kilometres at 85 km/h.  
+
The IJN Mutsuki carries two triple centre mountings for 610 mm Type 90 torpedoes, along with 6 reload torpedoes in lockers alongside the rearmost funnel. This gives it the ability to reload mid battle. Each torpedo has a 480 gram TNT equivalent warhead, and travels for 7 kilometres at 85 km/h.
  
 
This gives it the best torpedo count, torpedo speed and damage at its rank and the second best range that can be upgraded to by far the longest range through the Torpedo Mode modification that adds 8,000 meters for a total of 15 kilometers range, making it capable of reaching opposing spawn area within nearly all maps played on the ship's battle rating.
 
This gives it the best torpedo count, torpedo speed and damage at its rank and the second best range that can be upgraded to by far the longest range through the Torpedo Mode modification that adds 8,000 meters for a total of 15 kilometers range, making it capable of reaching opposing spawn area within nearly all maps played on the ship's battle rating.
  
IJN Mutsuki's torpedo firing arcs are tricky to use. When switching between torpedo aiming modes, the first one to select is for the frontal mount, which not only has a narrower firing arc of the two, but its available firing arc is oriented towards the rear of the ship. This creates a situation where most of the unknowing players would only use a very narrow 35° arc, where the first launcher begins to be able to fire after coming about, to release torpedoes on the hostile vessel. Therefore, when manoeuvring bow-first towards the enemy, it's recommended to switch to the rear launcher first; when manoeuvring stern-first towards the enemy, it's recommended to use front launcher first.
+
IJN Mutsuki's torpedo firing arcs are tricky to use. When switching between torpedo aiming modes, the first one to select is for the frontal mount, which not only has a narrower firing arc of the two, but its available firing arc is oriented towards the rear of the ship. This creates a situation where most of the unknowing players would only use a very narrow 35° arc, where the first launcher begins to be able to release torpedoes after coming about. Therefore, when manoeuvring bow-first towards the enemy, it's recommended to switch to the rear launcher first; when manoeuvring stern-first towards the enemy, it's recommended to use front launcher first.
  
 
=== Special armament ===
 
=== Special armament ===
 
<!--Depth charges, mines, rocket launchers and missiles are also effective in skilled hands and can take an off-guard opponent by surprise. Evaluate the ammunition of this type of armament and rate its performance in combat. If there are no special armaments, remove this section.-->
 
<!--Depth charges, mines, rocket launchers and missiles are also effective in skilled hands and can take an off-guard opponent by surprise. Evaluate the ammunition of this type of armament and rate its performance in combat. If there are no special armaments, remove this section.-->
{{main|Type 95 depth charge}}
+
{{main|Type 93 mod1 mine|Type 95 depth charge}}
  
 
The {{PAGENAME}} has an unlockable modification to equip Type 95 depth charges mounted on the Bomb Mortar. It's a tier IV modification, making for a comparatively difficult to unlock. It's the only one of two destroyers within its battle rating to be equipped with that modification, making it a fairly unique ship equipment. Mutsuki comes equipped with two mortars: port and starboard, each having one charge loaded and up to 3 spare. Charges cannot be loaded interchangeably, therefore only 4 are available to launch port and 4 starboard. Charges after ejection will be dropped at a constant distance away from the ship, player has only control over which side should charges be ejected on. Depth charges cannot be equipped onboard Mutsuki without the bomb mortar, it's the only way they can be deployed.
 
The {{PAGENAME}} has an unlockable modification to equip Type 95 depth charges mounted on the Bomb Mortar. It's a tier IV modification, making for a comparatively difficult to unlock. It's the only one of two destroyers within its battle rating to be equipped with that modification, making it a fairly unique ship equipment. Mutsuki comes equipped with two mortars: port and starboard, each having one charge loaded and up to 3 spare. Charges cannot be loaded interchangeably, therefore only 4 are available to launch port and 4 starboard. Charges after ejection will be dropped at a constant distance away from the ship, player has only control over which side should charges be ejected on. Depth charges cannot be equipped onboard Mutsuki without the bomb mortar, it's the only way they can be deployed.
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Charges are extremely situational, and due to a very short short range they are dropped on they are one of the most tricky weapons to use on any destroyer. Even more so, given that their primary target - submarines - are not available in the game.
 
Charges are extremely situational, and due to a very short short range they are dropped on they are one of the most tricky weapons to use on any destroyer. Even more so, given that their primary target - submarines - are not available in the game.
  
Note that as of January 2019 ship [[:File:Type-95-depth-charge-xray.jpg|is missing damage model]] for 2 bombs on each rack in-game, while all models are correctly visible in hangar.
+
<gallery mode="packed">
 
 
<gallery>
 
 
File:Type 95 details Mutsuki.png|Detailed look at the Type 95 ejected from the bomb mortar
 
File:Type 95 details Mutsuki.png|Detailed look at the Type 95 ejected from the bomb mortar
 
File:Type-95-depth-charge-xray.jpg|X-ray view of the Mutsuki bomb launcher in-game
 
File:Type-95-depth-charge-xray.jpg|X-ray view of the Mutsuki bomb launcher in-game
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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).-->
 
<!--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).-->
  
{{PAGENAME}} is one of the more challenging destroyers in the game, forcing player to rely on positioning, primary weaponry and other teammates.  
+
IJN Mutsuki is one of the more challenging destroyers in the game, forcing player to rely on positioning, primary weaponry and other teammates.
  
 
Her combination of a good survivability with speed and a long-range cannons make for a respectable fighter at range, however an extremely lacking secondaries create a huge opportunities for hostile torpedo boats or aircraft. {{PAGENAME}} in essence is forced to rely on friendlies, being best used in formation assisting other ships, using the cover of their anti-aircraft and trying to always keep hostiles at over 2.5 km, away from the range of their auxiliary guns firing back.
 
Her combination of a good survivability with speed and a long-range cannons make for a respectable fighter at range, however an extremely lacking secondaries create a huge opportunities for hostile torpedo boats or aircraft. {{PAGENAME}} in essence is forced to rely on friendlies, being best used in formation assisting other ships, using the cover of their anti-aircraft and trying to always keep hostiles at over 2.5 km, away from the range of their auxiliary guns firing back.
  
While maps the {{PAGENAME}} will fight on include small, narrow passages, those should be avoided for the fear of enemy boats - lack of secondary armament combined with slow, cruiser-like reload time on a primary cannons make for a very challenging task to destroy hostile torpedo boats, and being a destroyer: it has overall a poor manoeuvrability and a large size, making for a juicy target.
+
While maps the {{PAGENAME}} will fight on include small, narrow passages, those should be avoided for the fear of enemy boats - lack of secondary armament combined with slow, cruiser-like reload time on a primary cannons make for a very challenging task to destroy hostile torpedo boats, and being a destroyer: it has overall a poor manoeuvrability and a large size compared to many opponents it will face, making for a juicy target.
  
 
Overall, {{PAGENAME}} has a very steep learning curve, where player simultaneously has to master positioning in warships, leads on various targets at various ranges and a long-range torpedo gameplay.
 
Overall, {{PAGENAME}} has a very steep learning curve, where player simultaneously has to master positioning in warships, leads on various targets at various ranges and a long-range torpedo gameplay.
 +
 +
===Modules===
 +
{| class="wikitable"
 +
! Tier
 +
! Seakeeping
 +
! colspan="2" | Unsinkability
 +
! colspan="3" | Firepower
 +
|-
 +
| I
 +
| Dry-Docking
 +
| Tool Set||
 +
| 7.7 mm AP belt||||
 +
|-
 +
| II
 +
| Rudder Replacement
 +
| Fire Protection System||Smokescreen
 +
| 7.7 mm API belt||Auxiliary Armament Targeting||120 mm Type 0 HE
 +
|-
 +
| III
 +
| Propeller Replacement
 +
| Shrapnel Protection||Ventilation
 +
| ||Primary Armament Targeting||Improved Rangefinder
 +
|-
 +
| IV
 +
| Engine Maintenance
 +
| New Pumps||Ammo Wetting
 +
| Bomb mortar||Torpedo Mode||Mines
 +
|-
 +
|}
 +
After researching Tool Set and FPE, primary research focus should be in Seakeeping and Unsinkability towards tier IV where Torpedo Mode is a worthy upgrade. Lowest priority upgrades are those for the 7.7 mm auxiliary machine guns and, of course, bomb mortar. Note that even with fully upgraded speed and manoeuvrability, primary turrets still handle emergency turns well, making targeting upgrades a lower priority on the list.
 +
 +
[[File:CHARTWTTEMPLATE6.png|thumb|Destroyers abilities of the rank II destroyer, IJN Mutsuki]]
  
 
=== Pros and cons ===
 
=== Pros and cons ===
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* Very vulnerable from air
 
* Very vulnerable from air
 +
* Very vulnerable to attacks from multiple angles
 
* In essence no secondary or anti-aircraft armament
 
* In essence no secondary or anti-aircraft armament
 
* The longest reload time on a primary guns among comparable destroyers
 
* The longest reload time on a primary guns among comparable destroyers
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== History ==
 
== History ==
 
<!--Describe the history of the creation and combat usage of the ship in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.-->
 
<!--Describe the history of the creation and combat usage of the ship in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.-->
 +
[[File:Mutsuki 1924.jpg|thumb|right|{{PAGENAME}} during its launch date, on 23 June 1924]]
 
As the Washington Naval Treaty entered effect, where it substantially limited the quantity of naval weaponry available to the signatory nations, Japan began developing more advanced naval designs to better parry the might of the U.S. Navy.
 
As the Washington Naval Treaty entered effect, where it substantially limited the quantity of naval weaponry available to the signatory nations, Japan began developing more advanced naval designs to better parry the might of the U.S. Navy.
  

Latest revision as of 01:07, 14 September 2020

Italian Fleet
P 420 Sparviero Pack
Mutsuki class (1941)
jp_destroyer_mutsuki.png
AB
RB
SB
General characteristics
Brief
Detailed
3.7/3.7/3.7BR
148 peopleCrew
1800 tDisplacement
7Number of section
13 / 13 / 0 mmMain fire tower armor
15 mm (steel)Hull armor
15 mm (steel)Superstructure armor
Primary armament
120 mm/45 Type 3 cannon4 x Turret
240 roundsAmmunition
-7° / 33°Vertical guidance
Secondary armament
7.7 mm Type 92 machinegun2 x Turret
1940 roundsAmmunition
97 roundsBelt capacity
600 shots/minFire rate
Economy
18000 Rp icon.pngResearch
77000 Sl icon.pngPurchase
Sl icon.png0/550 / 704/840 / 1076Repair
22000 Sl icon.pngCrew training
77000 Sl icon.pngExperts
400 Ge icon.pngAces
136 % Rp icon.pngReward for battle
100 % Sl icon.png120 % Sl icon.png150 % Sl icon.png

Description

GarageImage IJN Mutsuki.jpg


The Mutsuki class (1941) is a rank III Japanese destroyer with a battle rating of 3.7 (AB/RB/SB). It was introduced in Update 1.89 "Imperial Navy".

The IJN Mutsuki is the first Destroyer most players will play within the Japanese tree, and its gameplay differs significantly from the Syonan. The ship is very much a destroyer geared towards long-range engagements, having the most powerful primary armament and the second-most-powerful torpedo setup among its battle rating, further increasing its performance in a gunnery battles by a relatively good armour. On the other hand, it has only two, very weak, auxiliary guns and no dedicated anti-aircraft weaponry, making it a poor performer in close-range encounters. Overall it's a difficult ship to play, posing a number of challenges to a player.

General info

Mutsuki is the first Japanese ship in the research tree able to survive a direct torpedo hit

Survivability and armour

The IJN Mutsuki is a relatively well armoured and survivable destroyer for its battle rating. Following the typical research path through the Japanese tree, this will be the first ship that's not prone to fires and the first one able to survive a single direct torpedo hit (unless it leads to secondary explosion).

The destroyer has armour protection and crew count that are above average, although the differences between destroyers in battle rating 3.7 are not high. Protection can be further enhanced with several modifications, although they're standard on all other comparable destroyers as well.

The biggest issue in ship's survivability is its lack of anti-aircraft armament. It's equipped only with two 7.7 mm auxiliary machine guns that are hardly useful even against wooden gunboats and nearly incapable of taking down anything airborne. Thus, the IJN Mutsuki has to rely on a cover of other ships or time fuse 120 mm shells for protection.

Mobility

With the speed of 62 km/h before any modifications, the IJN Mutsuki is the fastest destroyer within its battle rating. Decent speed is supplemented by good manoeuvrability, making it capable of choosing engagements and occasionally even avoiding torpedoes other destroyers would not. The aced top speed is 69 km/h, which is easily enough to get around the battlefield. The rudder shift time is also very respectable, allowing for dodging patterns and making it a hard target to hit with torpedoes.

Armament

Primary armament

Full broadside with all of of the Mutsuki's main guns, note the shockwaves coming from the end of barrel due to released pressure wave.

The IJN Mutsuki is armed with four single 120mm mounts, one in the bow, one just aft of the bridge in between the funnels, and two towards the aft. It's comparatively a powerful weaponry excelling especially at longer ranges against its equivalents.

All but the rearmost turrets aim forwards by default, making it relatively easy to hit targets ahead of her with her guns. Additionally, since they are all centrally mounted, it is possible to get all four turrets on target, although when making a turn rear-most turret has to travel over 180° to get a bearing on the target.

Within its battle rating. IJN Mutsuki has both the highest number of, and the highest calibre of primary guns. Its guns also have a second-highest muzzle velocity. That said though, it comes with a price - its shells are slow to reload, leading to the lowest sustained rate of fire among comparable destroyers. At the same time, damage output against warships is not as great as reload time might suggest, although still it's able to hullbreak almost any boat bar some unlucky hits at full-health units. Unfortunately for captains of the Mutsuki, the primary armament has a woeful turret traverse speed of 5°/sec (aced), making it difficult to switch targets and decreasing the overall versatility significantly. It would be very difficult to take the Mutsuki into more confined spaces as the turrets rotate far too slowly to deal with multiple torpedo boats or other craft.

Unlike most of the other nations, and typically to IJN rank III destroyers, it lacks armour-piercing shells for its primary armament what can be an issue when trying to deal with higher ranks. Alternative to standard HE is a researchable modification bringing in the Type 0 time fuse HE shells. Dedicated primarily for anti-aircraft duty, while very potent, the low number of fired shells and long reload time make for a hard choice and a very tricky way to protect itself from airborne attacks.

Secondary armament

Type 92 machine guns are mounted on a platforms port and starboard to the Mutsuki's bridge.
Main article: Type 92 (7.7 mm)

The secondary armament of the Mutsuki is two type 92 7.7 mm machine guns, each with 1,940 rounds of ammunition. The mountings are both abreast of the bridge, giving good all around coverage, but no overlapping arcs of fire except for the narrow frontal arc. They do virtually no damage and cannot be relied upon for defense against boats or aircraft.

Note that these are auxiliary weapons, not anti-aircraft, therefore they won't use crew upgrades for anti-aircraft weaponry, even though they are a single-mount machine guns with a vertical guidance of +60 degrees, making them often automatically engage aircraft.

Torpedo armament

Main article: Type 90 (610 mm)
Graphic detailing port firing arcs for each of the launchers, with a total firing arc of 70° and an overlapping arc of 35°

The IJN Mutsuki carries two triple centre mountings for 610 mm Type 90 torpedoes, along with 6 reload torpedoes in lockers alongside the rearmost funnel. This gives it the ability to reload mid battle. Each torpedo has a 480 gram TNT equivalent warhead, and travels for 7 kilometres at 85 km/h.

This gives it the best torpedo count, torpedo speed and damage at its rank and the second best range that can be upgraded to by far the longest range through the Torpedo Mode modification that adds 8,000 meters for a total of 15 kilometers range, making it capable of reaching opposing spawn area within nearly all maps played on the ship's battle rating.

IJN Mutsuki's torpedo firing arcs are tricky to use. When switching between torpedo aiming modes, the first one to select is for the frontal mount, which not only has a narrower firing arc of the two, but its available firing arc is oriented towards the rear of the ship. This creates a situation where most of the unknowing players would only use a very narrow 35° arc, where the first launcher begins to be able to release torpedoes after coming about. Therefore, when manoeuvring bow-first towards the enemy, it's recommended to switch to the rear launcher first; when manoeuvring stern-first towards the enemy, it's recommended to use front launcher first.

Special armament

The IJN Mutsuki has an unlockable modification to equip Type 95 depth charges mounted on the Bomb Mortar. It's a tier IV modification, making for a comparatively difficult to unlock. It's the only one of two destroyers within its battle rating to be equipped with that modification, making it a fairly unique ship equipment. Mutsuki comes equipped with two mortars: port and starboard, each having one charge loaded and up to 3 spare. Charges cannot be loaded interchangeably, therefore only 4 are available to launch port and 4 starboard. Charges after ejection will be dropped at a constant distance away from the ship, player has only control over which side should charges be ejected on. Depth charges cannot be equipped onboard Mutsuki without the bomb mortar, it's the only way they can be deployed.

Charges are extremely situational, and due to a very short short range they are dropped on they are one of the most tricky weapons to use on any destroyer. Even more so, given that their primary target - submarines - are not available in the game.

Usage in battles

IJN Mutsuki is one of the more challenging destroyers in the game, forcing player to rely on positioning, primary weaponry and other teammates.

Her combination of a good survivability with speed and a long-range cannons make for a respectable fighter at range, however an extremely lacking secondaries create a huge opportunities for hostile torpedo boats or aircraft. IJN Mutsuki in essence is forced to rely on friendlies, being best used in formation assisting other ships, using the cover of their anti-aircraft and trying to always keep hostiles at over 2.5 km, away from the range of their auxiliary guns firing back.

While maps the IJN Mutsuki will fight on include small, narrow passages, those should be avoided for the fear of enemy boats - lack of secondary armament combined with slow, cruiser-like reload time on a primary cannons make for a very challenging task to destroy hostile torpedo boats, and being a destroyer: it has overall a poor manoeuvrability and a large size compared to many opponents it will face, making for a juicy target.

Overall, IJN Mutsuki has a very steep learning curve, where player simultaneously has to master positioning in warships, leads on various targets at various ranges and a long-range torpedo gameplay.

Modules

Tier Seakeeping Unsinkability Firepower
I Dry-Docking Tool Set 7.7 mm AP belt
II Rudder Replacement Fire Protection System Smokescreen 7.7 mm API belt Auxiliary Armament Targeting 120 mm Type 0 HE
III Propeller Replacement Shrapnel Protection Ventilation Primary Armament Targeting Improved Rangefinder
IV Engine Maintenance New Pumps Ammo Wetting Bomb mortar Torpedo Mode Mines

After researching Tool Set and FPE, primary research focus should be in Seakeeping and Unsinkability towards tier IV where Torpedo Mode is a worthy upgrade. Lowest priority upgrades are those for the 7.7 mm auxiliary machine guns and, of course, bomb mortar. Note that even with fully upgraded speed and manoeuvrability, primary turrets still handle emergency turns well, making targeting upgrades a lower priority on the list.

Destroyers abilities of the rank II destroyer, IJN Mutsuki

Pros and cons

Pros:

  • Main caliber guns with a very good firing arcs and shell speed
  • Excellent max speed
  • Outstanding, long-range torpedoes (in particular after unlocking Torpedo Mode)
  • Good survivability

Cons:

  • Very vulnerable from air
  • Very vulnerable to attacks from multiple angles
  • In essence no secondary or anti-aircraft armament
  • The longest reload time on a primary guns among comparable destroyers

History

IJN Mutsuki during its launch date, on 23 June 1924

As the Washington Naval Treaty entered effect, where it substantially limited the quantity of naval weaponry available to the signatory nations, Japan began developing more advanced naval designs to better parry the might of the U.S. Navy.

One such design was the Mutsuki-class destroyers, developed in the early 1920s. Although intended as an improvement over the preceding Kamikaze-class, the Mutsuki-class would become outdated the moment it entered service due to the fact that the even more advanced Fubuki-class was developed in parallel. Nonetheless, Mutsuki-class destroyers still had a prolific service life during WW2, even in the later stages when most were converted into transport vessels.

Mutsuki, the lead ship of her class, was laid down in May 1924 at the Sasebo Naval Arsenal shipyard and was completed in March 1926. The ship was initially commissioned under the name Destroyer No.19, only receiving the name ‘Mutsuki’ in August 1928.

Mutsuki’s combat record began with the outbreak of the Second Sino-Japanese War between China and Japan in the early 1930s. The first battle involving the destroyer during WWII was the invasion of Wake Island. Following the invasion, Mutsuki took part in many more major operations in the Pacific, such as the invasions in the Solomon Islands, New Guinea and Rabaul, while also participating in the Battle of the Coral Sea in 1942.

After undergoing repairs in July 1942, Mutsuki was reassigned to the 8th Fleet and participated in the bombardment of Henderson Field on 24 August 1942. However, Mutsuki met her fate the following day, after an American B-17 Flying Fortress bomber managed a direct hit on the ship’s mid section during the Battle of the Eastern Solomons. Mutsuki sunk on that fateful August day and was subsequently struck from Naval records in October 1942.

- From Devblog

Clock on a rear mast

View of the Range Dial on a rear mast while main guns are firing.

The clock clearly visible on a rear mast of the Mutsuki and certain other destroyers is in fact a Range Dial (also known as Concentration Dial).

It enables other ships in a formation that are either behind smoke screen, with a broken range-finders or otherwise have their sight of the enemy hampered to take firing data from a friendly ship.

This technique was first introduced in the British Navy and subsequently adopted throughout other countries until being fully replaced by a short-range radio communications in 1930s, with some ships still bearing the clocks even up to the early days of the WW2.

As of January 2020 Range Dials are not functional in the game, they're purely visual part of the ship.

Media

Excellent additions to the article would be video guides, screenshots from the game, and photos.

See also

Links to the 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


Japan destroyers
Mutsuki-class  IJN Mutsuki
Fubuki-class  IJN Ayanami
Shiratsuyu-class  IJN Yuudachi
Yugumo-class  IJN Yugumo · IJN Kiyoshimo
Shimakaze-class  IJN Shimakaze
Akizuki-class  IJN Akizuki