Shipowner George Logothetis has won a first victory in a continuing dispute with a former friend who had invested in some of Lomar Shipping's containerships.

The High Court in London on Friday ruled in favour of Logothetis and his companies Lomar Corp, Lomar Shipmanagement and parent group Libra Holdings in an interim judgment.

The decision orders claimants Victor Pisante and two of his companies to post security for the defendants' costs in the court fight.