January 7, 2022, by Joseph S. Bermudez Jr., Victor Cha and Jennifer Jun— North Korea’s SINPO-class experimental ballistic missile submarine suffered a malfunction likely resulting in damage during the October 19, 2021, SLBM test launch... North Korea’s SINPO-class experimental ballistic missile submarine suffered a malfunction likely resulting in damage during…

October 21, 2021, by Joseph S. Bermudez Jr. and Victor Cha— North Korea test-fired a “new type” of submarine-launched ballistic missile (SLBM) on October 19, 2021, from waters in the Sinpo area. The test launch of the new SLBM is one of a series of recent provocative missile tests that demonstrate advancements in the survivability of North Korea’s nuclear weapons and ballistic missile programs. 

September 30, 2021, by Joseph S. Bermudez Jr.— While North Korea’s public demonstration of a rail-mobile missile launch platform earlier this month may have caught some by surprise, the country’s interest in developing such a capability reports back several decades... This article was originally published as a CSIS Korea Chair Platform. North Korea’s demonstration of…

September 8, 2021, by Joseph S. Bermudez Jr. and Victor Cha— Thirteen satellite images of the Sinpo South Shipyard and its environs collected between April 21 and September 1, 2021, provide an opportunity to update the status of the facility. While no indications were observed in the imagery suggesting preparations for the launching of the much-anticipated new ballistic missile submarine or preparations for a submarine-launched ballistic missile test, it is important to note that North Korea maintains the capability to undertake any of these on short notice.

July 7, 2021, by Joseph S. Bermudez Jr. and Victor Cha— The Mayang-do Navy Shipyard and submarine bases are the largest facilities of their kind in North Korea. Using unique off-nadir imagery collection, this report provides a close-up focus of these facilities, including views of the ROMEO class and SANGO class submarines, and Kim Jong-un’s yacht.

June 17, 2021, by Joseph S. Bermudez Jr. and Victor Cha— Using unique off-nadir imagery collection, this report provides a close-up focus of the test launch sites, ports, and related facilities at Sinpo South Shipyard. This is the first of several Sharp Focus reports providing a unique view of the Sinpo South Shipyard, Sinpo area, and Mayang-do navy facilities using a remarkable high off-nadir (HON) image collected by Maxar Technologies during April 2021.

April 20, 2021, by Joseph S. Bermudez Jr. and Victor Cha— Satellite imagery on April 19 shows that North Korea has positioned a cylindrical object on the submersible missile test barge at Nampo. This object could be a launch tube for an SLBM, but this cannot be confirmed yet based on available imagery... Satellite imagery on April 19 shows that North Korea has positioned a cylindrical object on…

April 14, 2021, by Joseph S. Bermudez Jr. and Victor Cha— The recent repositioning of the submersible missile test stand barge and floating dry-dock were not isolated events, but components of a series of small naval movements at the shipyard during the past four weeks. These activities have both practical and conspicuously political motivations as North Korea prepares to launch its new ballistic missile submarine (SSB) and Kim Jong-un apparently undertakes a policy of gradually increasing provocative military actions.

April 8, 2021, by Joseph S. Bermudez Jr. and Victor Cha— The recent repositioning of the submersible missile test stand barge was not an isolated event, but the latest in a series of small naval movements at the shipyard during the past several weeks. Satellite imagery of the Sinpo South Shipyard and its environs acquired on April 6 and 7, 2021 shows not only the recent movement of the submersible missile test stand barge, but also provides a general status update of the facility.

April 6, 2021, by Joseph S. Bermudez Jr., Victor Cha and Jennifer Jun— A Maxar Technologies satellite image collected at 11:09 AM KST on April 6 shows that North Korea is moving its submersible missile test barge located at the Sinpo South Shipyard. As no missile canister is visible onboard the submersible missile test barge, this movement does not indicate an imminent SLBM test.