Yokosuka Regional District (Base)


 

The entrance to strategic Tokyo Bay was  of vital importance for Japan’s defence and it was early recognized by the Tokugawa shogunate and Meiji government. The first military naval base was established in 1866.

Reorganization of Military Districts

After a new organization system of the Imperial Japanese Navy in April 1886, Japan was five naval districts were planned for Japan. The headquarters for the Tokai Naval District was relocated back to Yokosuka, becoming the Yokosuka Naval District, and the Yokosuka Naval Arsenal was placed under its command.

Only during war time the command of the fleets stationed within the district could be placed under the district command.

Modernization

Progressively, many schools were established at Yokosuka district base, increasing the amount of people and buildings for naval mechanical engineering, torpedo warfare and naval artillery, naval engineering, and for mine warfare. A naval medical center was established in 1908 and a new branch which will play a crucial role in the Pacific War, was constructed: The Naval aviation facilities were established in June 1912.

Accidents

Only on January 14, 1917, the naval base suffered its first accident. Yhe Japanese cruiser Tsukuba exploded and sank in Yokosuka port in an accident.

After WWII

Yokosuka was bombed by United States Navy and United States Army Air Forces aircraft in the final stages of the Pacific War, most notably during the attack on Yokosuka on 18 July 1945, but many of its facilities were captured intact by the Allied forces. The Yokosuka area came under occupation by American forces during the occupation of Japan, and most of the facilities of the former Yokosuka Naval District were inherited by the United States 7th Fleet and are now known as United States Fleet Activities Yokosuka.

 

Yokosuka Naval base in 1942

Yokosuka Naval base in 1942

JMSDF

A small portion of the area continues to be used by the modern post-war Japanese Maritime Self-Defense Force, which has preserved a portion of the original red brick gates.

The current mobile force units are assigned to Yokosuka Naval District Base:

 

  • 1st Flotilla 第1護衛隊群
    • 1st Squadron 第1護衛隊
      • DDH-183 Izumo
      • DDG-171 Hatakaze
      • DD-101 Murasame
      • DD-107 Ikazuchi
  • 2nd Flotilla 第2護衛隊
    • 6th Squadron 第6護衛隊
      • DDG-174 Yudachi
      • DD-110 Setogiri
      • DD-111 Onami
      • DD-116 Teruzuki
    • 11th Squadron  第11護衛隊
      • DD-129 Hamagiri
      • DD-152 Oyodo
      • DD-153 Chikuma
  • 2nd Submarine Squadron 第2潜水隊
    • SS-592
    • SS-595
    • SS-597
  • 4th Submarine Squadron 第4潜水隊
    • SS-505
    • SS-506
    • SS-598
    • SS-599

▽ Imperial Japanese Navy – Nihon Kaigun

 

organization of the imperial japanese navy

Nihon Kaigun organization
The structure and history of the
Imperial Japanese Navy

 

 

aircraft carriers of the imperial japanese navy

Aircraft Carriers
The battle and light aircraft carriers
of the Imperial Japanese Navy

 

 

battleships of the Imperial Japanese Navy

Battleships
The Battleships and Battlecruisers of
the Imperial Japanese Navy

 

 

heavy cruisers of the imperial japanese navy

Heavy Cruisers
The heavy cruisers of the
Imperial Japanese Navy

 

 

light cruisers of the imperial japanese navy

Light Cruisers
The light cruisers
of the Imperial Japanese Navy

 

 

destroyers of the imperial japanese navy

Destroyers
The destroyers squadrons of the
Imperial Japanese Navy

 

 

submarines of the imperial japanese navy

Submarines
The submarines fleet
of the Imperial Japanese Navy

 

 

auxiliary ships of the imperial japanese navy

Auxiliary Ships
The training, hospital, and other
auxiliary ships in the IJN

 

 

timeline of the japanese imperial navy warships

The TimeLine of ships
The design and operations
timeline records of the IJN warships

 

 

japanese land-based air groups

Naval Air Groups
The Land-Based Japanese
Navy Air-Groups

 

 

Japanese navy landing forces

Naval Landing Forces 1928-1945
Japanese Special Naval Landing Forces (SNLF),
Landing Forces (SNLF) 海軍特別陸戦隊

 

 

japanese secret weapons and technologies

Secret Weapons of the IJN
The secret weapons and teachnologies
of the Imperial Japanese Navy

 

 

strategic plans and doctrines of the IJN

Strategic Plans of the IJN
The strategic doctrines and
plans of the IJN

▽ Simulations & Wargames

▽ World War II: Pacific Theater

 

war in the pacific: admiral edition computer game

War in the Pacific: Admiral Edition
A computer-based simulation of
the entire Pacific War with incredible detail.

 

 

Empire of the sun_2nd edition boardgame wargame

The Empire of the Sun (2nd Ed.)
An strategy boardgame for the
Pacific War with solitaire playability.

 

 

pacific war boardgame

Pacific War
A fantastic monster game for the
Pacific War with many scenarios.

 

 

pacific war 2nd edition boardgame

Pacific War (2nd Ed.)
The 2nd Edition of the masterpiece
Pacific War game is coming soon!

▽Japan’s Maritime Self-Defense Force (JMSDF)

 

organization of the JMSDF

The organization of the JMSDF
The units and structure of
the Modern Japanese Navy (JMSDF)

 

 

districts of the jmsdf

The Regional District Forces
The locations and bases of the
five regional districts of the JMSDF

 

 

DDH helicopter destroyers of the jmsdf

Helicopter Destroyers DDH
The modern helicopter destroyers
of the Japan’s Maritime Self-Defence Force

 

 

DDG Guided missile destroyer of the JMSDF

Guided Missile destroyers DDG
The advanced guided missile destroyers
of the Japan’s Maritime Self-Defence Force

 

 

DD destroyers of the JMSDF

Destroyers DD
The destroyers of the
Japan’s Maritime Self-Defence Force

 

 

Landing Tank ships of the jmsdf

Tank Landing Ships LST
The tank lading ships of the
Japan’s Maritime Self-Defence Force

 

 

submarines of the jmsdf

Submarines SS
The submarine fleet of the
Japan’s Maritime Self-Defence Force

 

 

auxiliary ships of the jmsdf

Support and Auxiliary ships
Patrol and other support ships of the
Japan’s Maritime Self-Defence Force

 

 

aviation and helicopter units of the jmsdf

The aviation of the JMSDF
Japan Maritime Self-Defense Force aircrafts
and helicopter fleet

 

 

naval landing forces of the jmsdf

Naval landing forces of the JMSDF
The naval forces for landings
of the JMSDF

 

 

new weapons of the jmsdf

Future projects of the JMSDF
New coming units and future
developments of the JMSDF

 

 

strategy of the jmsdf

The strategy of the JMSDF
The current doctrine and
strategy of the JMSDF

 

 

strategy of the jmsdf

News & manoeuvres
News and military
exercises of the JMSDF

▽ Simulations & Wargames

▽ World War II: European Theater

 

unconditional surrender

Unconditional Surrender
A boardgame with innovative mechanics
for the entire World War II in European Front.

 

 

supreme commander

The Supreme commander
A strategic game at corps/army level
for the World war II in Europe.

 

 

 


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