Swire and BW Group-backed Cadeler has sealed its biggest-ever contract to transport, install and maintain the world's largest wind turbines offshore.

Energy company Siemens Gamesa is paying the shipowner $90m, with $30m of options, for work involving its new 14-MW SG 12-222 DD turbine models.

They will be the biggest in the world at the time of installation and over their 25-year lifetimes will save 1.4m