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2nd Wind Marine and MiNO Marine design offshore wind feeder vessel

By: Tom Russell 17/06/2020 MiNO Marine LLC and 2nd Wind Marine

General Vessels

2~~^nd~~ Wind Marine LLC and MiNO Marine LLC are designing a new vessel for the US offshore wind transport and installation market. The MiNO Marine SuperFeeder design is a Subchapter I compliant vessel 124.5 m in length and 40m wide (overall) with a 5m hull depth. Current plans are to construct the two vessels simultaneously.

A pair of these Jones Act compliant vessels will each be capable of transporting one complete set next-generation wind turbine components from US ports to offshore wind farm sites enabling.

The fully DP-2 vessels will each be propelled by three 2,500kW Z-Drives and two 1,200kW tunnel bowthrusters with the intent to maintain 10 knots while laden. The vessels are to be primarily diesel-electric with medium speed Tier-IV engines. The house is offset asymmetrically to the port side to allow more bow deck space to accommodate vertically stacked blade racks and will also be able to accommodate a total of 60 persons (20 crew and 40 offshore workers) in single and double berthed MLC-2006 compliant staterooms. The cargo deck rated to transport, and jack up with, 4,000 MT has a double deck so changes in grillage can be easily facilitated without concern to vital tank and void space below and is intended to be able to carry a complete next-generation turbine set (tower, nacelle, and blades).

The vessels are to be outfitted with a Liebherr designed crane installed around a jacking leg with an offset pedestal, allowing access to more than 95% of the vessel’s cargo deck space. The crane is capable of lifting each component of next generation wind turbines from quayside to the vessel’s cargo deck. Further, an extended boom variant will allow for blade change outs in the wind turbine field.

The MiNO Marine designed hull form was developed through engineering analysis using computational fluid dynamics (CFD) methods to yield an efficient hull form suitable for a wide range of offshore operating conditions while also minimising potential for flow induced drag. US shipyards have been engaged and are currently evaluating the design and preparing construction cost and timeline estimates.

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2nd Wind Marine and MiNO Marine design offshore wind feeder vessel

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