Mærsk to retrofit 200 chartered vessels by 2027

AP Moller-Mærsk has launched a large-scale retrofit programme covering around 200 time-chartered container vessels operated with 50 shipowners. The scheme involves 1,500 completed upgrade projects and a further 1,000 due by 2027, with investment shared between Mærsk and the owners. Modifications vary by vessel but commonly include replacement of bulbous bows and propellers to improve efficiency at lower service speeds.

“Many of these ships were designed and constructed at a time when container vessels in general were sailing at faster speeds. To bring down fuel consumption, we have over the years introduced less compressed vessel schedules, but the propellers and bulbs optimised for faster speeds have been kept. There lies a big efficiency potential in replacing them,” explained Anda Cristescu, head of Chartering & Newbuilding at Mærsk.

Additional work includes installation of auxiliary engine waste-heat recovery systems, shaft generators, and structural improvements to increase cargo capacity. “By working closely with our partners, we aim to implement solutions that reduce emissions and enhance competitiveness,” said Ahmed Hassan, head of Asset Strategy and Strategic Partnerships.

The programme addresses the high share of emissions from Mærsk’s chartered fleet and reflects the company’s approach of upgrading existing tonnage alongside investment in methanol-fuelled newbuildings. The retrofits are expected to bring measurable reductions in fuel consumption and CO₂ intensity, supporting Mærsk’s wider target of achieving net-zero greenhouse gas emissions by 2040.