Satellite images suggest North Korea may build a 10,000-ton cruiser and a new naval base at Nampo

A South Korean satellite imagery company says North Korea may be getting ready to build a warship of about 10,000 tonnes at its Nampo shipyard on the west coast, roughly twice the size of the Choe Hyon-class destroyers it has launched since 2025. The firm, SI Analytics, also says a new naval base appears to be taking shape beside the yard. South Korean outlets described its report on large cruiser construction and naval base development on 24 October; a photo caption in the Dong-A Ilbo dates the report to 16 October.

According to the report, imagery of the area around the yard's Building A construction hall shows materials and large works that appear linked to a new large hull. In a work area to the right of the hall, analysts spotted orange shipbuilding material about 19 metres long. Similar material was seen when North Korea built its first and third new destroyers at Nampo and when it assembled the fourth at the Chongjin shipyard. The firm judged that if the material is meant for a fifth new ship, that ship is likely to be the larger cruiser.

About 120 temporary buildings, thought to be housing for workers, have also gone up in four zones around the hall, which the report read as a sign of work that needs a large labour force. Building A, put up in the early 2000s, has two bays each about 125 metres long and 21 metres wide, too short to hold a 144-metre Choe Hyon-class destroyer. The report noted, however, that North Korea assembled its first destroyer hull in the open while building the hall around it, and that the Chongjin yard is building a destroyer outdoors under camouflage netting.

East of the shipyard, the firm identified large earthworks that it assessed as a new naval base. Demolition of old buildings and coastal land reclamation began there in October 2025, paused over the winter and resumed in April 2026. More recently, worker housing has appeared, an anti-aircraft gun position to the north has been removed and hillsides are being dug out, while active reclamation on the eastern shore points to a new pier. South of Building A, a quay extension about 172 metres long and 30 metres wide has been under way since mid-May. That is big enough for a Choe Hyon-class ship, whereas the largest pier at the nearby West Sea Fleet command is only about 100 metres long, the report said.

The imagery also points to delays. Kim Jong Un visited Nampo in March and ordered the third Choe Hyon-class destroyer to be finished by 10 October, the founding anniversary of the ruling Workers' Party. Recent images still show related material around the building area, which suggests the work is continuing. The report said the cause of the delay has not been identified.

The activity matches goals that Pyongyang itself has set out. At the commissioning of the Choe Hyon at Nampo on 23 June, Kim said, according to North Korean state media, that 10,000-ton cruisers would follow the second destroyer, Kang Kon, and that for five years the country would build two surface combatants of Choe Hyon size or larger every year, along with frigates, special-purpose ships and underwater weapons. He also said the navy lacked proper facilities to berth large warships. These are North Korea's own claims and plans, not independently confirmed outcomes. Naval News reported at the time that the Choe Hyon is the first of four ships in its class and serves with the West Sea Fleet.

SI Analytics assessed that, after mobile land launchers and a nuclear-powered submarine, a large ocean-going surface combatant would give North Korea another way to deliver nuclear weapons, especially if it could carry land-attack ballistic missiles that the 5,000-ton destroyers do not. The firm also judged that if North Korea used such ships in an anti-access strategy linked with China or Russia, it could affect the regional military balance and put a heavy load on South Korean and US surveillance and response.

These are commercial imagery judgments rather than official findings, and TaiwanDefence has not seen comment from Seoul or Pyongyang on the report. If confirmed, a cruiser programme and a dedicated base at Nampo would show North Korea pressing ahead with a larger Yellow Sea fleet even as its destroyer timetable slips, adding another navy to the waters that US and allied forces already watch alongside China's.