Commercial satellite photographs published this week show a large luxury boat at anchor near a coastal compound linked to Kim Jong Un. The vessel appears to carry a swimming pool about 50 metres in length and water slides. Analysts who follow North Korea say the design matches a private yacht more than any working ship in the national fleet.

Researchers place the mooring beside a summer retreat on the east coast long associated with the ruling family. For years commercial satellites have recorded palaces, private beaches and guest houses along that stretch of shoreline. Those sites are closed to the public and almost never shown in domestic news reports.

Most people in North Korea live with shortages of food, power and medicine, according to aid groups and accounts from those who have left. Travel inside the country is restricted and private leisure of this kind is not part of ordinary life. Large pools and pleasure boats exist in a world apart from markets, factories and collective farms.

They do show a scale of recreation that sits uneasily beside the official story of shared hardship.

State media in Pyongyang have not commented on the photographs. Official broadcasts typically show Kim Jong Un visiting military units, construction sites and farms, and they avoid any suggestion of personal luxury. Foreign reporting on elite compounds is routinely ignored or dismissed when it is acknowledged at all.

Cheaper access to commercial satellite pictures has made large coastal properties harder to hide. A few images cannot establish who used the boat or how often it sails. They do show a scale of recreation that sits uneasily beside the official story of shared hardship.