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Hybrid crew transfer vessels for Ørsted’s Hornsea Project 2 windfarm delivered
Naval architect Incat Crowther has confirmed the delivery of a pair of Incat Crowther 35 crew transfer vessels (CTVs) to Denmark-based MHO-Co
The CTVs were delivered by AFAI Southern Shipyard. The designer described MHO Asgard and MHO Apollo as ‘the first hybrid CTVs in operation with extensive zero-emissions capability.’
The vessels will service the Hornsea Project 2 offshore windfarm for Ørsted. They are the third and fourth Incat Crowther-designed vessels for MHO-Co, following on from MHO Esbjerg and MHO Gurli.
MHO Asgard and MHO Apollo are powered by an advanced propulsion system that was developed in collaboration with Danfoss and Volvo Penta. The system comprises a pair of diesel drivetrains and a pair of diesel-electric drivetrains, each driving Volvo Penta IPS drives.
The main diesel engines are Volvo Penta D13s, producing 515 kW each. The generators used for the diesel-electric propulsion train are Volvo Penta D8-MH units. A further three of the units are located in the hulls amidship, alongside a Volvo Penta D5 used as a harbour generator.
Propulsion is via highly efficient Volvo IPS units. Additionally, a Corvus battery system provides stored power for zero-emissions operation.
The system offers exceptional flexibility, allowing the vessel to operate in zero-emissions electric mode for up to eight hours, or in combination with diesel propulsion for a maximum speed of 25 knots. The flexibility is enhanced by the use of multiple modular generators, meaning power generation can be optimised for the operational profile.
Incat Crowther described the design as having an "incredibly flexible layout" and a large, 110-m2 foredeck with multiple tie-downs, deck crane, moonpool and the capability to take a bring-to-work system. The Z-Bridge bring-to-work system was trialled on MHO Esbjerg.
MHO Asgard and MHO Apollo accommodate 24 technicians in mid-deck cabins. A comfortable saloon for technicians is located on the main deck with 24 suspended seats, lockers, a pantry and a separate mess. Additional technician rest spaces are also located on this deck, as is a large wet room with lockers and showers.
“Designing and building hybrid CTVs is a huge step in the environmental direction, and I am proud we have found partners who share our vision for sustainable development in the offshore industry,” said MHO-Co chief executive and founder Mik Henriksen.
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