The sheer number of the boats appearing in recent years also suggests that people were leaving North Korea as part of small enterprises rather than a monolithic state enterprise, another expert observed.
It points to an opening of the North Korean economy, said Benjamin Katzeff Silberstein, an editor at North Korean Economy Watch.
He told BI: “It may tell us something about the extent to which economic activity has been liberalised, but also put under pressure.
“In other words, companies run with relative freedom by individuals may have increased space to operate, but in some cases, they may also receive quotas to fill by the state or other government entities.
“In the case of the ghost ships, while their circumstances aren’t fully known, the pressure to meet quotas could explain why they need to venture further out into the ocean searching for their catch, perhaps not with adequate fuel resources on board.”