IJN Survey Ship Tsukushi

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  • Yes, for blue-water tree
  • Yes, for coastal tree
  • Yes, for premium/event/gift
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筑紫 / Tsukushi

Category

  • Category: Special Service Ship / 特務艦
  • Subcategory: Survey Ship / 測量艦
  • Project number: J11
  • Class: N/A
  • Name: Tsukushi / 筑紫 (northern area of Kyushu)

Briefly: Heavily armed survey ship with 4x 12cm AA gun and aircraft!

History

Tsukushi is Japanese first survey ship (測量艦) completed in 1941. This ship was designed for survey missions at frontline area.
She was completed just after the Pacific War started. Because of it, she dispatched to Philippines immediately to support main force. After survey was completed, she joined landing operations of Manado, Kendari, Makassar, Bali, and Jawa. Especially, during the Dutch East Indies campaign she fought against 4 American destroyers who survived the Battle of the Sunda Strait. In this battle, she intercepted these destroyers with 21th destroyer squadron, but finally US destroyers succeeded to escape to Australia.

After Southern Operations were completed, she engaged survey missions, but since 1943 she also assigned for escort missions.

Finally, she was sunked near Kavieng (Papua New Guiana) by naval mine during escort mission.

  • Planned: FY1937
  • Laid down: January 17, 1940 (MHI Yokohama dock)
  • Launched: November 29, 1940
  • Completed: December 17, 1941
  • Sunk: November 4, 1943
  • Removed from register: January 5, 1944

Design

This ship was quite heavy-armed survey ship. For survey mission on frontline, equipped with 4x 12cm AA gun and machine guns.

For survey, this ship have about 30t of survey equipment, 4x 10-meter survey craft and Type 0 small seaplane. Also, in the ship there are various rooms for survey missions.

40 Caliber 10th Year Type 12 cm Twin AA Gun / 四十口径十年式十二糎連装高角砲


Japanese popular anti-aircraft gun. In game, Kako and Syonan already have single mount variant.
Compare to other Japanese 5-inch class cannons, rate of fire is superior to them.

  • Rate of fire: 10-11 rounds per minute
  • Velocity: 850 m/s
  • Shell weight: 20.33 kg
  • Explosives: 1.95 kg

Type 96 25 mm Machine Gun / 九六式二十五粍機関銃


Japanese standard anti-aircraft machine gun during WW2.

E14Y Type 0 Small Seaplane Model 11/ 零式小型水上機一一型


Japanese small seaplane for submarines used during WW2. Developed by Kugisho and manufactured by Watanabe ironworks.
This aircraft is known as the first aircraft which bombed main land of United States of America.

  • Length: 8.53 m
  • Width: 10.98 m
  • Wing area: 19.00 m2
  • Weight: 1,450 kg
  • Max speed: 246 km/h
  • Engine: Hitachi Tempu mod.12, 340 HP
  • Cruise range: 882 km
  • Ceiling height: 5,420 m
  • Weapon: 1x 7.7 mm MG, 1x 60 kg bomb
  • Crew: 2

Specification

  • Length overall: 84 m
  • Max width: 10.6 m
  • Average draft (full load): 1.6 m
  • Displacement (full load): 1,724.2 t
  • Speed: 19.7 kt [36.5 km/h]
  • Propulsion: 3x Diesel engine, 3 shafts, 5,700 shp
  • Main caliber gun: 2x 12.7 cm Twin AA gun
  • Machinegun: 2x 25 mm Twin Machinegun
  • Crew: 128 own crew + 65 survey engineer
  • Aircraft: Type 0 Small Seaplane (Kugisho E14Y Glen)
Specification (detailed)
  • Dimensions
    • Length between perpendiculars: 77.30 m
    • Length overall: 84.00
    • Waterline length (normal load): 83.00 m
    • Max width: 10.60 m
    • Waterline width (normal load)): 10.60 m
    • Waterline max width: 10.60 m
    • Depth: 6.60 m
    • Freeboard (bow): 5.80 m
    • Freeboard (stern): 3.15 m
    • Freeboard (center): 3.00 m
    • Displacement (normal load): 1,600.0 t
    • Bow draft (normal load): 3.60 m
    • Stern draft (normal load): 3.60 m
    • Average draft (normal load): 3.60 m
    • Displacement (full load): 1,724.20 t
    • Average draft (full load): 3.79 m
    • Cruise range: 16 kt / 8,000 miles
    • Speed (plan, max): 19.7 kt
    • Shaft Horsepower (plan, max): 5,700 SHP
  • Weapons
    • Main gun: 2x 40 caliber 10th Year Type 12 cm Twin AA Gun
    • Machinegun: 2x Type 96 25 mm Twin Machinegun
    • Ammo hoist: 2
    • Ammo load
      • Main gun: 150 per each barrel (total 600)
      • Machine gun: 1,000 per each barrel (total 4000)
    • Fire control systems:1x Type 89 AA Fire Control Table Mod.2
    • Loading drill gun: 1
  • Torpedo weapons
    • Minesweeping equipment: 2x Small Minesweeping Equipment
    • Paravane: 2x Small Paravane
    • Underwater Clearance Equipment: 2x Model 1
  • Cruise weapons
    • Compass
      • 1x Type 90 Mark 3 Mod.1 earth inductor compass
      • 2x Type 90 Mark 3 Mod.1 earth inductor compass for wheelsman
      • 1x Sperry Model 5 Mod.2 gyro compass
    • Depth recorder: 2
    • Dead-reckoning tracer: 1x Model 2 dead-reckoning tracer
    • Anemoscope: 1x Type 91 Mod.1 anemoscope
    • Yama-Kawa Light (IR IFF): 2x Type 97 Yama-Kawa Light
    • Maritime meteorological observation equipment: 1x Type 97
    • High-rise meteorological observation equipment: 1x Type 97
  • Optical weapons
    • Rangefinder
      • 1x Type 96 3-meter Rangefinder
      • 1x Type 96 66-cm Rangefinder
    • Telescope
      • 2x 12cm Telescope
      • 2x 8cm AA Telescope
      • 1x 8cm Telescope
  • Electrical weapons
    • Primary power supply: 3x 100kW diesel generator
    • Secondary power supply:
      • 2x 2kVA 55V
      • 1x 1KW 22V
    • Searchlight: 1x Sperry 75 cm Model 4 Mod.1 Searchlight
    • Signal light: 1x 2kilo Signal Light

For War Thunder

This ship will be heavy armed gun boat for battle rate 3.3-3.7. The fire power of this ship (4x 12cm AA gun) is superior to destroyer Mutsuki or escort ship Syonan.

It cannot equip torpedoes, but these cannons with high rate of fire will be very useful in game.

Also, seaplanes on such small ship seems unique, and some player will be interest to it.

  • Pros
    • Good fire power: 4x 12 cm AA gun with high rate of fire!
    • Silhouette is smaller than destroyers
    • Unique design
  • Cons
    • Not a good speed: 36.5 km/h
    • No torpedoes

Reference

“Special Service Ship, General Plan with current statues survey, 1943”
http://navgunschl2.sakura.ne.jp/tenji/zoukou/shipsdata_ijn_toku_01_orig.pdf

http://www.tokusetsukansen.jpn.org/J/index.html

https://ja.wikipedia.org/wiki/筑紫_(測量艦)

At low br +1

+1 for coastal tech tree. She should also spawn in the coastal zone, because of her low speed.