We are non-profit voluntary group formed by submarine enthusiasts. Our goal is to provide better understanding of the Navy and submarine to the general public.
Welcome aboard! Since 2015, we are striving to deliver a better understanding of the Navy and submarine to the general audience. In 2016, we were able to present our first book with great success. We will continue to work on our project as much as we can.
The U.S. Navy lost 52 submarines during World War II. This came at a devastating cost: roughly one in five American submariners (over 3,500 men) were killed, representing the highest casualty rate of any U.S. armed forces branch during the conflict.
Remember them today 🇺🇸
Underway on nuclear power for the last time 🫡
OTD in 1979: USS Nautilus (SSN-571) reached Mare Island Naval Shipyard for inactivation, her final day underway on nuclear power.
Proposed sales include 24 MH-60R multimission helicopters for the South Korean navy and upgrades for the army’s AH-64E Apache attack helicopters
Read more at: https://t.co/8UunjHafts
South Korea Getting Nuclear Submarines Is A Huge Deal
Nuclear propulsion will give South Korea more capable subs, but it will also lay the groundwork for a future sea-based nuclear deterrent option.
https://t.co/VpVPWPXMMA
South Korea Unveils Historic Plan to Build First Nuclear-Powered Submarine 🇰🇷☢️
On Tuesday, May 26, South Korea’s Ministry of National Defense announced the “Basic Plan for the Development of the Republic of Korea Nuclear-Powered Submarine.”
https://t.co/Ie9g40yeHN
Future USS Utah (SSN 801) Virginia-class Block IV nuclear attack submarine touching water for the first time in Groton, Connecticut - May 17, 2026 SRC: FB- General Dynamics Electric Boat
OTD in 1958: USS Skipjack (SSN-585) was launched at EB. Skipjack was the first nuclear powered submarine based on the teardrop hull of USS Albacore (AGSS-569). Her class held the title of the fastest American boats until 688s came along.
The Republic of Korea Navy’s KSS-III submarine ROKS Dosan Ahn Changho arrived at Canadian Forces Base Esquimalt in Victoria, British Columbia, on May 23, completing the first trans-Pacific voyage by a South Korean submarine 🇰🇷 🇨🇦
https://t.co/RsfmRYqrcE
🎉 The Silent Service turns 126 today
OTD in 1900: the US Navy purchased their first true submarine, Holland VI, from John P Holland for $160k. Commissioned 6 months later as USS Holland (SS-1)
Happy National Submarine Day‼️
Steel Beneath the Waves: Evolution of an Apex Predator
Today is National Submarine Day. During WWII, 263 U.S. Navy submarines deployed on war patrols. This image of 52 submarines in the Pacific Reserve Fleet at Mare Island in 1946 represents the same number of subs that went on eternal patrol after being lost in the war.
#OTD in 1918, Germany sank the entire Liberian navy with a single shot. After Liberia entered WWI on the Allied side, Germany sent a U-boat to Monrovia that used its deck gun to score one hit on the R.L.S President Daniel E. Howard, sinking Liberia's only gunboat.
The future of the Navy’s nuclear-powered fleet is on the line.
Don’t miss the opportunity to hear ADM William Houston, USN, Director of the Naval Nuclear Propulsion Program, live on the grounds of the U.S. Naval Academy. From the future of the nuclear-powered fleet to shipbuilding priorities and AUKUS commitments, this discussion will tackle the most pressing challenges facing U.S. maritime power today.
📅 22 April
⏰ 1000–1100
📍 Jack C. Taylor Conference Center, Annapolis
🔗 Register here to attend in-person or virtually:
https://t.co/7oqV4sz1hw
Brief Korean translation was partially done for the some of the document that released 6 years ago. Please refer to the link below.
6년전에 공개된 문건의 일부 번역본은 해당링크를 참고하시기 바립니다.
https://t.co/yfv2yNV5az
Today marks 63 years from loss of USS Thresher. All 129 crews were lost and still remain on enternal patrol. It made a huge impact within U.S. Navy and general public, which lead to creation of SUBSAFE program.
It was only 6 years ago that additional documentations regarding the loss of USS Thresher have been released to the public after the court ruling.
Accurate and trustworthy information about the event can be found at USNI online website.
#OTD in 1963, 129 men were lost when the USS Thresher (SSN-593) sank during deep dive tests in the Atlantic Ocean. After being told about the disaster, the young son of skipper CDR John Harvey made this crayon drawing of the sub lying on the ocean floor.