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Tuesday, August 18, 2020 

Kongsberg Maritime has been contracted by Norwegian company Island Offshore to supply turnkey hybrid battery solutions for three of the firmís UT 776 CD-design Platform Supply Vessels (PSVs).

Two of the ships, Island Crusader and Island Contender, previously operated with a combination of Bergen LNG engines and Bergen Diesel engines, while the Island Commander deploys four diesels. The conversion of all three into hybrid craft not only represents a firm commitment on the part of Island Offshore to the principles of environmental responsibility, but also unlocks potential for increased operational efficiency and a reduction in maintenance requirements. This in turn translates to significant cost savings.

In the past, PSVs have typically run multiple engines to achieve redundancy, with consequent impacts on fuel performance, equipment health and emissions. However, combining conventional LNG or diesel engines with Kongsberg’s SAVe Energy battery system – which has been validated by DNV-GL – offers benefits. The batteries allow for fewer engines to be running, thus improving efficiency by increasing the load on the remaining engines while also instantly delivering power on demand: ideal in the context of low-load operations such as Dynamic Positioning. Fuel consumption and running costs will be reduced through conversion of the vessels to closed bus-tie operation.

The solution opted for by Island Offshore will operate via a single feed from the ESS (Energy Storage System) to the main switchboard – with manual changeover that will enable the operators to balance out running hours on generators – and a 600kW dual shore connection. Kongsberg Maritime’s 8m/26ft ESS 896kWh deckhouse will encompass a standard, type-approved, liquid-cooled container solution with air-cooled SAVe Energy batteries. The extensive scope of supply will also involve modifications to each vessel’s main switchboard and K-Power EMS energy management system, as well as an upgrade of the Acon automation and alarm system.

Tommy Walaunet, MD Island Offshore Management, said: “We are pleased to be working with Kongsberg Maritime on this endeavour, as a leading supplier and strategic partner to our business. By making this investment despite challenging market conditions, we underline our commitment to continue reducing our vessels’ environmental footprints, and our strong belief in a sustainable future for our business.”

“The operational, financial and ecological benefits of hybridisation based on our lithium-ion SAVe Energy modular energy storage system speak for themselves,” said Gaute Aasen Augestad, Regional Sales Manager (EMEA), Kongsberg Maritime. “Applying this concept to the PSV market sets an important precedent for the industry, and we’re pleased to have been entrusted with delivering this integrated technology package for these Island Offshore vessels.”

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