This is a list of fleets of the Imperial Japanese Navy, the navy of the Empire of Japan. This navy existed from 1868 to 1945, when it was replaced by the Japan Maritime Self-Defense Force.
These fleets were under the command of the Ministry of the Navy, Imperial General Headquarters or Imperial Japanese Navy General Staff.
These fleets were under the command of a higher rank fleet, and themselves commanded one or more lower rank fleets.
These did not in general have any other fleets under their command.
These diagrams cover only fleets, omitting naval districts, guard districts, divisions, flotillas, squadrons, detachments, and other elements.
Ministry of War | Northern Expeditionary Fleet | ||||||||||||
Ministry of War | Small Fleet (for the Port of Yokohama) | ||||||||||||
Small Fleet (for the Port of Hyōgo) | |||||||||||||
Small Fleet (for the Port of Nagasaki) | |||||||||||||
Bureau of Naval Affairs | Medium Fleet | ||||||||||||
Bureau of Naval Affairs | Eastern Fleet | ||||||||||||
Western Fleet | |||||||||||||
Bureau of Naval Affairs | Eastern Sea Naval District | Medium Fleet | |||||||||||||||||||
Bureau of Naval Affairs | Standing Small-Fleet | ||||||||||||
Bureau of Naval Affairs | Standing Fleet | ||||||||||||
Imperial Japanese Navy General Staff | Combined Fleet | Standing Fleet | |||||||||||||||||||
Western Sea Fleet | |||||||||||||||||||||
Imperial Japanese Navy General Staff | Combined Fleet | 1st Fleet | |||||||||||||||||||
2nd Fleet | |||||||||||||||||||||
3rd Fleet | |||||||||||||||||||||
Imperial General Headquarters | Special Task Fleet | ||||||||||||||||||||
Imperial Japanese Navy General Staff | 1st Fleet | ||||||||||||||||
2nd Fleet | |||||||||||||||||
3rd Fleet | |||||||||||||||||
Allied Powers | 1st Special Task Fleet | ||||||||||||||||
2nd Special Task Fleet | |||||||||||||||||
3rd Special Task Fleet | |||||||||||||||||
Imperial Japanese Navy General Staff | Combined Fleet | 1st Fleet | |||||||||||||||||||
2nd Fleet | |||||||||||||||||||||
Imperial General Headquarters | China Area Fleet | 3rd Fleet | |||||||||||||||||||
4th Fleet | |||||||||||||||||||||
Imperial Japanese Navy General Staff | Combined Fleet | 1st Fleet | |||||||||||||||||||||
2nd Fleet | |||||||||||||||||||||||
3rd Fleet | |||||||||||||||||||||||
4th Fleet | |||||||||||||||||||||||
5th Fleet | |||||||||||||||||||||||
6th Fleet | |||||||||||||||||||||||
1st Air Fleet | |||||||||||||||||||||||
11th Air Fleet | |||||||||||||||||||||||
Southern Expeditionary Fleet | |||||||||||||||||||||||
Imperial General Headquarters | China Area Fleet | 1st China Expeditionary Fleet | |||||||||||||||||||||
2nd China Expeditionary Fleet | |||||||||||||||||||||||
3rd China Expeditionary Fleet | |||||||||||||||||||||||
Imperial Japanese Navy General Staff | Combined Fleet | 6th Fleet | |||||||||||||||||||||||||||
1st Air Fleet | |||||||||||||||||||||||||||||
1st Mobile Fleet | 2nd Fleet | ||||||||||||||||||||||||||||
3rd Fleet | |||||||||||||||||||||||||||||
Southwest Area Fleet | 1st Southern Expeditionary Fleet | ||||||||||||||||||||||||||||
2nd Southern Expeditionary Fleet | |||||||||||||||||||||||||||||
3rd Southern Expeditionary Fleet | |||||||||||||||||||||||||||||
4th Southern Expeditionary Fleet | |||||||||||||||||||||||||||||
9th Fleet | |||||||||||||||||||||||||||||
13th Air Fleet | |||||||||||||||||||||||||||||
Southeast Area Fleet | 8th Fleet | ||||||||||||||||||||||||||||
11th Air Fleet | |||||||||||||||||||||||||||||
Northeast Area Fleet | 5th Fleet | ||||||||||||||||||||||||||||
12th Air Fleet | |||||||||||||||||||||||||||||
Central Pacific Area Fleet | 4th Fleet | ||||||||||||||||||||||||||||
14th Air Fleet | |||||||||||||||||||||||||||||
Escort Fleet | |||||||||||||||||||||||||||||
Imperial General Headquarters | China Area Fleet | 2nd China Expeditionary Fleet | |||||||||||||||||||||||||||
Imperial General Headquarters | Supreme Headquarters of the Navy | Combined Fleet | 4th Fleet | ||||||||||||||||||||||||||||||||||
6th Fleet | |||||||||||||||||||||||||||||||||||||
7th Fleet | |||||||||||||||||||||||||||||||||||||
1st Air Fleet | |||||||||||||||||||||||||||||||||||||
3rd Air Fleet | |||||||||||||||||||||||||||||||||||||
5th Air Fleet | |||||||||||||||||||||||||||||||||||||
10th Air Fleet | |||||||||||||||||||||||||||||||||||||
12th Air Fleet | |||||||||||||||||||||||||||||||||||||
10th Area Fleet | 1st Southern Expeditionary Fleet | ||||||||||||||||||||||||||||||||||||
2nd Southern Expeditionary Fleet | |||||||||||||||||||||||||||||||||||||
13th Air Fleet | |||||||||||||||||||||||||||||||||||||
China Area Fleet | 2nd China Expeditionary Fleet | ||||||||||||||||||||||||||||||||||||
Escort Fleet | 1st Escort Fleet | ||||||||||||||||||||||||||||||||||||
Southwest Area Fleet | 3rd Southern Expeditionary Fleet | ||||||||||||||||||||||||||||||||||||
Southeast Area Fleet | 8th Fleet | ||||||||||||||||||||||||||||||||||||
11th Air Fleet | |||||||||||||||||||||||||||||||||||||
In Japanese, sentai (戦隊) is a military unit and may be literally translated as "squadron", "task force", "division ", "group" or "wing". The terms "regiment" and "flotilla", while sometimes used as translations of sentai, are also used to refer to larger formations.
The 1st Air Fleet, also known as the Kidō Butai, was a name used for a combined carrier battle group comprising most of the aircraft carriers and carrier air groups of the Imperial Japanese Navy (IJN) during the first eight months of the Pacific War.
The 10th Area Fleet was a fleet of the Imperial Japanese Navy (IJN) established during World War II as a result of IJN commands being isolated in the Philippines.
The Southwest Area Fleet was a fleet of the Imperial Japanese Navy established during World War II.
The First Carrier Division was an aircraft carrier unit of the Imperial Japanese Navy's First Air Fleet. At the beginning of the Pacific Campaign of World War II, the First Carrier Division consisted of the fleet carriers Akagi and Kaga. The division participated in the Attack on Pearl Harbor and Indian Ocean Raid. After Akagi and Kaga were sunk at the Battle of Midway in June 1942, carriers Shōkaku, Zuikaku, and Zuihō were redesignated as the First Carrier Division.
The 1st Fleet was the main battleship fleet of the Imperial Japanese Navy.
The 1st Mobile Fleet was a fleet of the Imperial Japanese Navy established during World War II.
Dai-ichi (第一) is a compound modifier phrase of Japanese origin, meaning number one, or first. In kanji, "dai" ("number") is 第 and "ichi" ("one") is 一. "Dai" is also defined "ordinal number marker." It is this feature that makes the phrase a modifier, or an adjective, describing a noun, as first. Number one functions in the same way.
The 24th Air Flotilla was a combat aviation unit of the Imperial Japanese Navy (IJN) during the Pacific Campaign of World War II. The flotilla, mainly consisting of land-based bombers, fighters, and flying boats, reported to the IJN's 4th Fleet. As originally organized, the flotilla's core units were the 4th Air Corps, Yokohama Air Corps, and 1st Air Corps.
The Southern Expeditionary Fleet was a fleet of the Imperial Japanese Navy, their roles were invasion and maintenance of the public order in southwestern area the French Indochina, Philippines, British Malaya and Dutch East Indies.
The China Area Fleet was a fleet of the Imperial Japanese Navy organized after the Battle of Shanghai. It reported directly to the Imperial General Headquarters and had the same organizational level as the Combined Fleet. This article handles their predecessor fleet the Southern Qing Fleet, China Expeditionary Fleet and 1st/2nd Expeditionary Fleet also.
The 11th Air Fleet was a grouping of naval aviation and surface units.
The 1st Air Squadron was a flying unit of the Imperial Japanese Army Air Service. The unit was established on 5 July 1938 at Kagamigahara, Japan. The unit saw service in Manchuria during the Manchuria Incident, China during the Second Sino-Japanese War and Burma, Netherlands East Indies, Indochina, Rabaul, Solomon Islands, New Guinea, Philippines, Formosa and Japan during World War II. The unit was disbanded at Takahagi, Japan in late 1945.
The 634th Naval Air Group was a carrier air group of the Imperial Japanese Navy (IJN) during the Pacific campaign of World War II.
The 701st Naval Air Group was an aircraft and airbase garrison unit of the Imperial Japanese Navy (IJN) during the Pacific campaign of World War II.
The 601st Naval Air Group was a carrier air group of the Imperial Japanese Navy (IJN) during the Pacific campaign of World War II.
Kantai Collection, known as KanColle for short, is a 2015 Japanese anime television series created by Diomedéa, based on the game of the same name by Kadokawa Games. The series was announced in September 2013, and aired from January to March 2015. An animated film, titled KanColle: The Movie, was released on November 26, 2016. A second installment titled KanColle: Let's Meet at Sea by ENGI aired from November 2022 to March 2023.
The Imperial Japanese Navy Air Service was under the control of the Navy Aviation Bureau.
The First Air Army was part of the Japanese Imperial Army during World War 2. It had its headquarters in Tokyo, basing in the Kanto Plain. The 1st was responsible for covering the Japanese home islands, Taiwan, Korea, Kuril Islands, and South Sakhalin.