Sea Installer is an ordered offshore wind turbine installation jack-up vessels. She was ordered by A2SEA, a Danish offshore wind turbines installation company, and it will be built by Chinese COSCO Shipyard Group Co. The contract value is US$139 million.Sea Installer will have a length of 132 metres (433 ft), breadth of 39 metres (128 ft), draft 5.8 metres (19 ft), and she will have a speed of 12 knots (22 km/h; 14 mph). She is able to jack-up at water depths of up to 45 metres (148 ft).