Commander Fleet Activities Yokosuka Logo Commander, Navy Region Japan  |  Commander Fleet Activities Yokosuka
Commander, Navy Installations Command
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Welcome to Fleet Activities Yokosuka

An installation community that attracts the best Sailors and civilian employees to serve in Japan with their families.

Installation Information

Fleet Activities, Yokosuka comprises 568 acres and is located 43 miles south of Tokyo at the entrance of Tokyo Bay and approximately 18 miles south of Yokohama. Yokosuka is on the Miura peninsula in the Kanto Plain region of the Pacific Coast in Central Honshu, Japan. CFAY is the largest overseas U.S. Naval installation in the world and is considered to be one of the most strategically important bases in the U.S. military.

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Imagery from CFAY

  • YOKOSUKA, Japan (Jan. 29, 2021) – Chief Retail Services Specialist Herbert Martinez, assigned to Commander, Fleet Activities Yokosuka (CFAY), poses for a photo with his family after advancing to the rank of chief petty officer during a pinning ceremony at the CFAY Fleet Theater Jan. 29, 2021. (U.S. Navy photo by Taylor Curry)
  • YOKOSUKA, Japan (Feb. 4, 2021) – The Arleigh Burke-class guided missile destroyer USS Rafael Peralta (DDG 115) arrives at Fleet Activities Yokosuka after completing a homeport change from San Diego, Calif., to join U.S. 7th Fleet. (U.S. Navy photo by Taylor Curry/Released)
  • YOKOSUKA, Japan (March 19, 2021) — Andrea Hunt, a teacher's aide at The Sullivans School onboard Commander, Fleet Activities Yokosuka (CFAY), receives the COVID-19 vaccine from Hospital Corpsman Janasia Spotson, assigned to U.S. Naval Hospital Yokosuka, during a COVID-19 vaccine distribution at CFAY’s Hawk’s Nest. (U.S. Navy photo by Ryo Isobe)
  • YOKOSUKA, Japan (March 26, 2021) — Leadership from the U.S. Navy and Japan Maritime Self-Defense Force Yokosuka District, including Rear Adm. Brian Fort, Commander, U.S. Naval Forces Japan/Navy Region Japan, center left, and Capt. Rich Jarrett, Commander, Fleet Activities Yokosuka (CFAY), center right unveil a poster marking the 150th anniversary of the completion of Dry Dock 1. (U.S. Navy photo by Ryo Isobe)
  • YOKOSUKA, Japan (April 1, 2021) – Command Master Chief Derek Mullenhour, Commander, Fleet Activities Yokosuka (CFAY) command master chief, Chief Culinary Specialist Chasity Eastland and Chief Culinary Specialist Juan Sanchez cut a cake in honor of the chief petty officers’ 128th birthday. (U.S. Navy photo by Mass Communication Specialist 2nd Class Tyler R. Fraser/Released)
  • YOKOSUKA, Japan (April 3, 2021) — Children of families wave to the Easter Bunny and Sparky the Fire Dog during a Morale Welfare and Recreation (MWR) Easter Parade through military housing onboard Commander, Fleet Activities Yokosuka (CFAY). (U.S. Navy photo by Edward L. Holland)
  • YOKOSUKA, Japan (April 12, 2021) — Five contestants pose in front of their desserts prior to Commander, Fleet Activities Yokosuka’s (CFAY) Dessert Bake-off held at Kosano Park. Rear Adm. Brian Fort, Commander, U.S. Naval Forces Japan/Commander, Navy Region Japan challenged Navy installations across Japan to create an American dessert inspired by Japanese ingredients. (U.S. Navy photo by Tetsuya Morita)
  • Commander, Fleet Activities Yokosuka celebrated its first community event since COVID-19 health protection measures were first implemented. Sailors and their family members spent the day enjoying the annual Independence Day Celebration, which included music, activities, food and a fireworks show onboard U.S. Fleet Activities Yokosuka, July 10. (U.S. Navy photo by Mass Communication Specialist 1st Class Ian Cotter)
  • YOKOSUKA, Japan - Chief Boatswain’s Mate Christian Sherman guides the Seawolf-class fast-attack submarine USS Connecticut (SSN 22) at Fleet Activities Yokosuka for a scheduled port visit, July 31. Connecticut is conducting maritime operations in the U.S. 7th Fleet to maintain a safe and open Indo-Pacific. (Photo by Petty Officer 1st Class Patrick O’Brien)
  • YOKOSUKA, Japan (Aug. 16, 2021) The Arleigh Burke-class guided-missile destroyer USS Higgins (DDG 76) arrives at Commander, Fleet Activities Yokosuka (CFAY), Japan Aug. 16 as one of the newest additions to Commander, Task Force (CTF) 71/Destroyer Squadron (DESRON) 15. Higgins is assigned to CTF 71/DESRON 15, the Navy’s largest forward deployed DESRON and the U.S. 7th Fleet’s principle surface force. (U.S. Navy photo by Ryo Isobe)

High Resolution PDFs For New Main Base Shuttle Bus and Ikego HTW Buses

Main Base Shuttle Bus Route

Ikego HTW Route A.M.

Ikego HTW Route P.M.

Ikego HTW Route Ikego 

Computer Desktop Notification System (CDNS)

CDNS is short for Computer Desktop Notification System. CDNS is the system used by shore commands to
provide simultaneous emergency notifications to OneNet computer desktops, as well as home, work and
mobile email and telephones.

CDNS Registration Instructions:    English | 日本語

CDNS Registration Example            CDNS Registration Forms

Computer Desktop Notification System (CDNS) AtHoc Self Service User Guide (CAC Card Required)
コンピュータ・デスクトップ・通知システム(CDNS) セルフサービス・ユーザー・ガイド

Flying to Japan

If you or someone you know is experiencing a crisis, please reach out to these 24-hour resources below:


Duty Chaplain Line: 080-5016-6836

Military One Source: 1-800-342-9647

Suicide Prevention Line: 1-800-273-8255 dial 1

Suicide Prevention:

Veterans Crisis Line:

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