Asashio B

12.8

Asashio B

Destroyer | Japan | Tier VIII

Tech Tree Position

General

Purchase priceSpecial

Hit Points15,100

Main Battery

127 mm/50 3rd Year Type on a Type C mount3 х 2 pcs.

Rate of Fire8.51 shots/min.

Reload Time7.05 sec.

Rotation Speed6.9 deg./sec.

180 Degree Turn Time26.09 sec.

Firing Range10.95 km.

Maximum Dispersion97 m.

HE Shell127 mm HE Type1

Maximum HE Shell Damage2,150

Chance of Fire on Target Caused by HE Shell9 %

Initial HE Shell Velocity915 m./s.

HE Shell Weight23 kg.

AP Shell127 mm AP Type0

Maximum AP Shell Damage2,200

Initial AP Shell Velocity915 m./s.

AP Shell Weight23 kg.

Torpedo Tubes

610 mm Quad2 х 4 pcs.

Rate of Fire0.54 shots/min.

Reload Time112 sec.

Rotation Speed25 deg./sec.

180 Degree Turn Time7.2 sec.

TorpedoType93 mod. 2 dw

Maximum Damage20,967

Torpedo Speed67 knot

Torpedo Range20.01 km.

AA Defense

25 mm/60 Type 96 on a twin mount2 х 2 pcs.

. . . Average Damage per Second5.4

. . . Firing Range2.49 km.

Maneuverability

Maximum Speed35 knot

Turning Circle Radius640 m.

Rudder Shift Time3.6 sec.

Concealment

Surface Detectability Range6.63 km.

Air Detectability Range3.02 km.

Battle Levels

12345678910

12.8

Asashio B

Destroyer | Japan | Tier VIII

Tech Tree Position

General

Purchase priceSpecial

Hit Points15,100

Main Battery

127 mm/50 3rd Year Type on a Type C mount3 х 2 pcs.

Rate of Fire8.51 shots/min.

Reload Time7.05 sec.

Rotation Speed6.9 deg./sec.

180 Degree Turn Time26.09 sec.

Firing Range10.95 km.

Maximum Dispersion97 m.

HE Shell127 mm HE Type1

Maximum HE Shell Damage2,150

Chance of Fire on Target Caused by HE Shell9 %

Initial HE Shell Velocity915 m./s.

HE Shell Weight23 kg.

AP Shell127 mm AP Type0

Maximum AP Shell Damage2,200

Initial AP Shell Velocity915 m./s.

AP Shell Weight23 kg.

Torpedo Tubes

610 mm Quad2 х 4 pcs.

Rate of Fire0.54 shots/min.

Reload Time112 sec.

Rotation Speed25 deg./sec.

180 Degree Turn Time7.2 sec.

TorpedoType93 mod. 2 dw

Maximum Damage20,967

Torpedo Speed67 knot

Torpedo Range20.01 km.

AA Defense

25 mm/60 Type 96 on a twin mount2 х 2 pcs.

. . . Average Damage per Second5.4

. . . Firing Range2.49 km.

Maneuverability

Maximum Speed35 knot

Turning Circle Radius640 m.

Rudder Shift Time3.6 sec.

Concealment

Surface Detectability Range6.63 km.

Air Detectability Range3.02 km.

Battle Levels

12345678910

VIII

Special

Asashio B — Japanese special premium Tier VIII destroyer.

The design of the Asashio-class destroyers underwent substantial changes compared to the preceding Shiratsuyu class, as the latter's speed and firepower were inferior to those of the Fubuki class. Meeting the requirements necessitated an increase in displacement, a change made possible due to Japan's decision to disregard the limitations set by the London Naval Treaty. The lead ship, Asashio, commissioned in August 1937, played a role in amphibious operations in the Philippines and Malaya, engaged in the Battle of Badung Strait, and participated in the Battles of Midway and Guadalcanal.

First sold over Black Friday 2018, and during subsequent Black Friday events.

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 ()
127 mm/50 3rd Year Type on a Type C mount	8.5	26.1	97	2,150	9	2,200		0	0

	Hit Points (HP)	Armor (mm)	Armor (mm)	Main Turrets (pcs.)	Secondary Gun Turrets (pcs.)	AA Mounts (pcs.)	Torpedo Tubes (pcs.)	Hangar Capacity (pcs.)		Research price (exp)	Purchase price ()
Asashio B.	15,100	13	20	3		2	2			0	0

	Rate of Fire (shots/min)	Torpedo Tubes Reload Time (sec)	180° Turn Time (sec)	Maximum Damage (HP)	Torpedo Speed (knot)	Torpedo Range (km)		Research price (exp)	Purchase price ()
Type93 mod. 2 dw	0.5	112	7.2	20,966	67	20		0	0

	IDS_SHIP_PARAM_SUO_INCREASE_DIST (%)	Maximum Firing Range (km)		Research price (exp)	Purchase price ()
Type8 mod. 1		0		0	0

	Maximum Speed (knot)		Research price (exp)	Purchase price ()
Propulsion: 50,000 hp	35		0	0

Compatible Upgrades

Slot 1
Slot 2
Slot 3
Slot 4
Slot 5

Player Opinion

Performance

Warning. The data presented in the AA Defense sidebar section may be incorrect.
For a graphic summary of ships Tiers VIII thru XI see LittleWhiteMouse's "Actual AA DPS".

Asashio B is externally very comparable to her Tier VIII tech tree compatriot Kagero. They share nearly identical concealment ratings, maneuverability statistics, guns, and health. The two ships are extremely similar, but Asashio B plays completely differently due to her unique torpedo armaments, and by having the Torpedo Reload Booster  occupying a separate consumable slot (as with Akizuki).

Technically speaking, Asashio B is the stealthiest destroyer in her matchmaking spread, having a slightly smaller air detection radius than Kagero and HSF Harekaze. This allows her to control vision and spotting ranges exceedingly well, utilizing her stealth as another layer of armor against enemy vessels. It is armor she desperately needs, as Asashio B’s main weapons are her torpedoes, though her guns can be used in certain situations. It's her torpedoes which make her truly unique: Asashio B is equipped with a deep water variant of the same Type 93 mod. 2 torpedoes found aboard other Tier VIII and IX Japanese ships, and similar to those found in the Pan-Asian destroyer line. They have increased flooding chance, are harder for enemies to detect, and have a whopping 20 kilometer range while still retaining 67 knots of speed... but can only hit battleships and aircraft carriers.

As a result of Asashio B only being able to damage battleships and the rare aircraft carrier with her torpedoes, she is a highly specialized ship: designed to really only do one thing, but to do it exceptionally well. She has only her guns with which to combat enemy cruisers and destroyers, a state of affairs that leaves her highly vulnerable to both ship types. Captains should not be afraid to use Asashio B’s guns, however, as strategically engaging key targets can lead to the difference between a win and a loss. Using her concealment to avoid unwinnable fights is also a valid strategy, and can keep her in the game for longer.

Pros:

• Stealthy, with a 5.4km surface detection range when fully kitted out.
• Torpedoes are extremely powerful against battleships.
• Has access to both Torpedo Reload Booster  and Smoke Generator  at the same time.

Cons:

• Slow turrets and slow reload hinder her ability to gun fight other ships, especially destroyers.
• Torpedoes can only hit battleships and aircraft carriers, limiting her target selection.
• Slow speed for a destroyer at only 35 knots.
• The torpedo's long range can make hitting allies a possibility. Her captain needs to keep an eye out for allied ships.
• No AA defense to speak of.

  
  

  LittleWhiteMouse's Premium Ship Review: Asashio from the NA forums

Research

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

Optimal Configuration

Upgrades

The recommended upgrades for Asashio B are as follows:

• Slot 1: Main Armaments Modification 1
• Slot 2: Engine Room Protection or Engine Boost Modification 1 , if available (not available)
• Slot 3: Aiming Systems Modification 1
• Slot 4: Propulsion Modification 1
• Slot 5: Concealment System 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 -10% cooldown time of: Main Battery Reload Booster , Torpedo Reload Booster , Spotting Aircraft , Catapult Fighter , & Defensive AA Fire .	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. ★★
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.
Key: ★★★ - Extremely Useful      ★★ - Frequently Useful      ★ - Occasionally Useful     No stars - Not Useful

Consumables

Asashio B equips the following consumables:

• Slot 1: Damage Control Party 
• Slot 2: Smoke Generator 
• Slot 3: Engine Boost 
• Slot 4: Torpedo Reload Booster 

Camouflage

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

Signals

Asashio captains should mount standard signal flags to improve the ship’s performance in battle. Captains looking to improve upon the ship’s armament should mount Victor Lima (), Juliet Whiskey Unaone (), and November Foxtrot () signal flags. Sierra Mike () signal flags are recommended to increase the ships top speed. Juliet Charlie () flags are also recommended to prevent detonations.

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

Historical Info

Asashio B, 1938

Construction

Builder: Sasebo Naval Arsenal; Sasebo, Japan

Laid down: 7 September 1935

Launched: 16 December 1936

Commissioned: 31 August 1937

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Specifications

2000 tons displacement, standard

118.3m length

10.3m beam

3.7m draft

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Machinery

2-shaft geared turbine

3 Kampon boilers

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Performance

35 knots at 50,000 shaft horsepower

5,700 nm at 15 knots

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Armament

Main

Six (3x2) Type 3 127 mm 50 caliber naval guns

Anti-aircraft

Twenty-eight (14x2) Type 96 25 mm AT/AA Gun

Four (4×1) Type 93 13 mm machine guns

Torpedoes

Eight (2x4) 610 mm (24 in) torpedo tubes

Sixteen Type 93 torpedoes

Asashio on sea trials at Sasebo, July 1937.

Design

In order to correct the deficiencies found in previous Japanese destroyers, the designers of the Shiratsuyu-class sacrificed performance for design integrity, a decision they were unable to rectify until Japan withdrew from the London Naval Treaties. The Asashio-class of destroyers — part of the 1934 Navy program — were borne out of that necessity of improvement, and history would venerate this class of 10 destroyers to be proficient and capable vessels; they would be the template for all future Japanese destroyer designs till the end of the Second World War.

With the shackles of treaty limitations cast aside, the designers opted to push standard displacement past 2,000 tons; the first native destroyer design to do so. The increase in length had the positive ramification of improving crew quarters. While the propulsion set-up was identical to the previous class — 3 Kampon boilers feeding into two turbines, each driving a shaft — the designers opted to use the latest available machinery that ran at higher temperatures and pressures. The outcome was an increase of output to about 50,000 shaft horsepower. Despite the increase of tonnage, the class managed to attain speeds to 35 knots. The setup was not perfect, however; Asashio showed instabilities while turning, which prompted the installation of a modified stern and rudder for the remaining vessels in the class that managed to decrease the turning radius. Other troubles included teething issues with the turbines, which took years to rectify.

The most striking feature was the return to the dual-gun only armament setup pioneered on the Fubuki-class. Asashio featured six 127mm guns found in three turrets: one forward with a super firing pair aft. Unlike her predecessors the 'X'-turret was placed elevated on the shelter deck. The design called for the reuse of the Type C turret mounts, which traded gun elevation angle for a lighter, yet fully enclosed, armor shell. As well, the class retained the improved torpedo layout of their predecessors: two (2) quadruple-tube torpedo launchers positioned along the centerline, with a reload stored for each pack in a deck house. For anti-aircraft defense, the destroyers were armed with a meager pair of the new Type 96 25mm cannons in dual-mounts.

The bulk of wartime modifications bolstered the sub-par anti-aircraft abilities of the class. The first phase of refits in late 1942 replaced the dual-mounted 25mm guns with triple mounts. The largest refit saw the removal of 'X'-turret in order to install a further pair of triple-mount 25mm guns, and was completed in mid-1944. Late 1944 saw the addition of single-mount 25mm guns all across the forward superstructure. Additionally, all ships of the class received the No. 22 and No. 13 radar sets, installed on the fore and mainmasts, respectively.

Asashio (朝潮, lit. "Morning Tide"), the lead ship of the class, was the first ship to be laid down on 7 September 1935 at the Sasebo Naval Arsenal. Launched 16 December 1936, she was completed 31 August 1937.

Service

Asashio B was the first destroyer of the IJN to have a displacement greater than 2,000 tons. During her initial trials, she suffered from steering problems and issues with her unreliable new 50,000 shaft horsepower turbines, but these flaws were ironed out for the class as a whole by the beginning of the Second World War. Issues aside, the overall design for Asashio was considered successful, and her design was repeated in the later Kagero and Yūgumo classes. Asashio herself spent her pre-war service in training and modernization to fix her outstanding issues, before Japan joined the war.

At the time of Pearl Harbor, Asashio was the lead ship of the 8th Destroyer Division, consisting of Asashio, Ōshio, Michishio and Arashio, stationed in the South China Sea escorting transports bound for British Malaya and the Dutch East Indies. On 19 February 1942, while DesDiv8 were escorting two transports near Bali in the Dutch East Indies, the destroyers came under attack from a combined Dutch-American-British force consisting of two submarines, seven destroyers, and three cruisers. While the three Dutch light cruisers were decently modern vessels, the American Clemson-class destroyers were sorely outdated compared to the four Asashio-class destroyers. In the resulting Battle of Badung Strait, Asashio herself successfully struck the Dutch destroyer HNLMS Piet Hein with a 61cm torpedo, sinking the Dutch destroyer immediately, suffering only light damage in return. She continued to serve around the Dutch East Indies until late May, when she and her division transferred to the central Pacific. She was present at the Battle of Midway, escorting the Support Group that was covering the troop convoys to Midway. On 6 June during the battle, she came under attack by US planes, taking a hit from a 500-pound bomb and sustaining medium damage. She and sister-ship Arashio rescued 240 survivors from the sinking heavy cruiser Mikuma, and then escorted badly-damaged Mogami back to Truk on 14 June.

Following repairs that stretched into late October 1942, Asashio returned to the front lines to take part in the Guadalcanal campaign. She saw no combat during her time serving in the Solomon Islands, making several successful transport runs in the area for the rest of 1942. During this time, she helped light cruiser Isuzu limp back to port after suffering damage from the Second Naval Battle of Guadalcanal, then towed Shiratsuyu-class destroyer Umikaze back to the island of Rabaul for repairs, and later escorted Zuikaku, Mutsu, and Suzuya from Truk to mainland Japan. By mid-February 1943 she was back on duty in the southwestern Pacific. While escorting a troop convoy in the Bismarck Sea, she came under attack by a joint US-AUS air strike. The first wave of attacks was devastating: all seven transports took hits that left them burning or sinking, and destroyers Tokitsukaze, Shirayuki and Arashio were sunk. The fourth destroyer and final destroyer to sink was Asashio. While picking up survivors from Arashio the following morning of the strike, a second wave attacked, with a B-17 striking her amidships with a 500-pound bomb, damaging her beyond repair. She sank quickly, going down with roughly 200 of her crew of 226 enlisted men and officers.

Historical Inaccuracies

• Asashio was only painted in overall IJN gray.
• Asashio’s name written in katakana on both sides of the hull are missing.
• The Type 93 mod. 2 torpedo was actually an experimental type designed in 1935 to meet a staff requirement for a higher speed torpedo for destroyers. It was discontinued in 1941 and did not enter service.

Historical Gallery

• 

  Asashio underway in July 1937.

• 

  The rear of Asashio.

• 

  Design scheme of Asashio.

Video

References

1. Japanese destroyer Asashio (1936) - Wikipedia
2. Asashio-class destroyer - Wikipedia
3. CombinedFleet.com, Asashio Class Notes; Allyn Nevitt
4. Globalsecurity.org, IJN Shiratsuyu class destroyers
5. Midway1942.com, Asashio class

Ship Change Log

See here for links to Update notes.

• Available for purchase in the Premium Store during Update 0.7.11 during the Black Friday promotion. Could also drop from Black Friday containers.

Testing Changes

• October 15, 2018:
  • First announcement.

• Update 0.7.11.1:
  • Fixed a bug due to which the armor could differ from the armor of the original version of the ship.
• Update 0.8.0:
  • Minor fixes to geometry and textures.
• Update 0.11.9:
  • Minor fixes to geometry and textures of the ship.

Ships of Japan

Destroyers