Shipowners that bought sub-­panamax boxships just a few months ago are doubling their money.

The latest to benefit is Norwegian owner Arne Blystad, who is profiting from the well-timed purchase of a sub-panamax boxship.

His private shipping interests picked up the 2,846-teu Robin 1 (ex-Algarroba, built 2009) barely one month ago for about $6m less than it is estimated to be worth today.