Marcon International of Coupeville, Wash. announced the sale of three twin screw, ocean-going tugs from Malaysian based, International Bulk Trade Pte. Ltd., to a private Central American buyer. The Singapore-registered sister-tugs sold were the 2010 built Surya Ratna 18; the 2009 built Surya Ratna 15 and the 2009 built Surya Ratna 16. All three tugs were built by Hung Seng Shipbuilding Sdn. Bhd. in Sibu, Malaysia, and are powered by twin Cummins KTA50M2 main engines producing a total of 3,200BHP at 1,800RPM. These drive fixed pitch props in kort nozzles developing a bollard pull of between 40 and 45 tonnes and free running speed is 12kn. The tugs are classed with Nippon Kaiji Kyokai (NKK).