US offshore wind developer Mayflower Wind has lined up an order for a hybrid crew transfer vessel (CTV).

The Boston-based company — a joint venture between Shell New Energies and Ocean Winds —picked Gladding-Hearn Shipbuilding of Somerset, Massachusetts, to construct the Jones Act vessel, which will use battery-diesel propulsion.

It describes the ship as "world-class", providing significant fuel savings and emissions reductions, using lithium ion battery energy storage as a bridge to full electrification.