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Imperial Naval Registry (Treaty of Amiens Map Game)

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The Imperial Naval Registry is the official list of vessels in service with the Imperial Japanese Navy. The Shogun authorised the creation of a semiannually updated list of all ships within the Navy.

NOTE: Not all vessels are listed here, as there are hundreds of ships in service and under construction. Only the most notable vessels are listed here. Red Seal Ships are not included in the registry.

Prefixes

The prefix "IJS" stands for "Imperial Japanese Ship" (Japanese: 日本帝国船 Nihon-teikoku sen), and is derived from English. According to the Imperial Naval Basic Law signed in 1805 by the Shogun, "all vessels serving the Imperial Japanese Navy will have the words 'Imperial Japanese Ship' or the letters 'IJS.' All vessels not commissioned into the Navy, but are under command of Naval forces, shall carry the prefix of 'IJNS' or 'Imperial Japanese Naval Ship.' All vessels carrying the IJS prefix must be registered on the Imperial Naval Registry. Naval bases shall carry the prefix of 'Imperial Japanese Naval Facility' or 'IJNF.'"

  • IJS — Imperial Japanese Ship (日本帝国船 Nihon-teikoku sen) — Commissioned IJN vessels
  • IJNS — Imperial Japanese Naval Ship (日本帝国海軍船 Nihon-teikoku kaigun-sen) — Non-commissioned IJN vessels
  • IJNF — Imperial Japanese Naval Facility (日本帝国海軍施設 Nihon-teikoku kaigunshisetsu) — IJN military bases/facilities

Registration numbers

Since the IJS Yamato (IR-5), all vessels commissioned into the Imperial Japanese Navy carry a registration which is also painted onto their hulls for easier identification. Each registration number has a prefix denoting what type of vessel the subject is. The possible prefixes are as follows:

  • SK — Ironclad (装甲艦 Sōkō-kan)
  • JN — Frigate (巡洋艦 Junyō-kan)
  • KH — Brig (小帆船 Kohan-sen)
  • HM — Schooner (帆前船 Homae-sen)
  • HK — Gunboat (砲艦 Hōkan)
  • JY — Experimental vessel (実験容器 Jikken-yōki)

In service

Name Registry number Country of origin Class/Type Ordered Laid Completed Commissioned Fleet Notes
IJS Kukkyōna Eihei (屈強な衛兵 — Strong guard) Flag of the Tokugawa Shogunate Japan Brig 1806.5 1807 1807.5 1807.5 1st Fleet
IJS Tokugawa Ieyasu (徳川家康 — Tokugawa Ieyasu) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Touitsu (統一 — Unity) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Yukikaze (雪風 — Snowy wind) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Fubuki (吹雪 — Blizzard) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Tennō (天皇 — Emperor) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Setsugetsuka (雪月花 — Serene Beauty) Flag of the Tokugawa Shogunate Japan Brig 1807 1807 1807.5 1807.5 1st Fleet
IJS Amatsukaze (天津風 — Heavenly wind) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Edo (江戸 — Edo) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Kyōto (京都 — Kyoto) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Ienari (家斉 — Tokugawa Ienari) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Hogo-sha (保護者 — Guardian) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Ōkami (狼 — Wolf) Flag of the Tokugawa Shogunate Japan Brig 1807 1807.5 1808 1808 1st Fleet
IJS Tetsusenshi (鉄戦士 — Iron warrior) Flag of the United States United States Ironclad 1807 1807 1807.5 1808 1st Fleet
IJS Chishinakaze (致死な風 — Deadly wind) Flag of the Tokugawa Shogunate Japan Frigate 1807 1808 1810 1810 1st Fleet
IJS Nagasaki (長崎 — Nagasaki) Flag of the Tokugawa Shogunate Japan Ironclad July 1810 September 1810 June 1811 July 1811 2nd Fleet
IJS Teikoku (帝国 — Empire) Flag of the Tokugawa Shogunate Japan Ironclad July 1810 September 1810 June 1811 July 1811 2nd Fleet
IJS Fukkatsu (復活 — Rebirth) Flag of the Tokugawa Shogunate Japan Ironclad July 1810 September 1810 June 1811 July 1811 2nd Fleet
IJS Minami (南 — South) Flag of the Tokugawa Shogunate Japan Frigate July 1810 August 1810 September 1811 October 1811 2nd Fleet
IJS Harukaze (春風 — Spring Wind) Flag of the Tokugawa Shogunate Japan Frigate July 1810 August 1810 September 1811 October 1811 2nd Fleet
IJS Yamato (大和 — Yamato) SK5 Flag of the Tokugawa Shogunate Japan Yamato-class Ironclad July 1810 August 1811 January 1813 January 1813 1st Fleet
IJS Akikaze (秋風 — Autumn Wind) SK6 Flag of the Tokugawa Shogunate Japan Yamato-class Ironclad July 1810 August 1811 January 1813 January 1813 3rd Fleet
IJS Fuyukaze (冬風 — Winter Wind) JN4 Flag of the Tokugawa Shogunate Japan Fuyukaze-class Frigate July 1810 January 1812 January 1813 January 1813 3rd Fleet
IJS Ryōshi (漁師 — Fisherman) JN5 Flag of the Tokugawa Shogunate Japan Fuyukaze-class Frigate July 1810 January 1812 January 1813 January 1813 3rd Fleet

Fleets

The following is a list of fleets employed by the Imperial Japanese Navy, along with their deployment positions. Bold indicates that the fleet is undergoing reconstruction as per the Kantai Kakuchō program. Italics indicates that the fleet is not currently in service.

  • 1st Fleet — Edo
  • 2nd Fleet — Tennō-shoto
  • 3rd Fleet — Nagasaki
  • 4th Fleet — Ōtomari
  • 5th Fleet — Nishichi (Amur region)
  • 6th Fleet — Sapporo
  • 7th Fleet
  • 8th Fleet
  • 9th Fleet
  • 10th Fleet

Former vessels

The following is a list of vessels that have been struck from the Naval Registry either because they have been decommissioned or lost at sea.

Name Registry number Class/Type Commissioned Decommissioned Fate Fleet
IJS Yamato (大和 — Yamato) Brig 1806.5 January 1813 Mothballed, awaiting dismantling 1st Fleet

Under construction

The following is a list of vessels currently under construction and not yet in service.

Name Registry number Class/Type Shipyard Ordered Laid Due date Fleet

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