A 38 North exclusive with analysis by Jack Liu, Peter Makowsky and Jenny Town

Recent commercial satellite imagery of North Korea’s Sinpo South Shipyard indicates that building of a submarine ongoing for several years—possibly a follow-on to the current SINPO-class experimental ballistic missile submarine—is continuing. On March 23, probable submarine hull sections, as well as several pieces of equipment, parts and supplies, were seen in the yard adjacent to the Sinpo construction halls. By April 5, the hull sections were gone, and only minor movement of parts is observed in subsequent images.

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