Borealis Finance has taken its spending on containerships this year to over $40m by acquiring its fourth boxship in as many months.

The Norwegian investment vehicle has acquired the 2,732-teu Star River (built 2006) for $8.7m, adding to three other vessels purchased since the start of the year, according to an investor presentation.

The price tag points to a profit for the Chinese seller, SITC Ship Management, which reportedly paid just $4.5m