Page 24: of Marine News Magazine (September 2020)

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WORKBOAT CONVERSION

Reaping the Rewards of Hybrid Solutions

Gunder Tande Sandersen orwegian offshore support vessel owner Island demand: ideal in the context of low-load operations such

Offshore has awarded a contract to Kongsberg as dynamic positioning. Fuel consumption and running

Maritime to supply turnkey hybrid battery solu- costs will also be reduced through conversion of the vessels

N tions for three platform supply vessels (PSV). to closed bus-tie operation," Kongsberg Maritime says.

Two of the vessels, the 96-meter Island Crusader and The solution opted for by Island Offshore will operate

Island Contender (delivered in 2012), previously operated via a single feed from the energy storage system (ESS) to with a combination of Bergen lique? ed natural gas (LNG) the main switchboard – with manual changeover that will engines and Bergen diesel engines, while the 93-meter Is- enable the operators to balance out running hours on gen- land Commander (delivered in 2009) deploys four diesel erators – and a 600kW dual shore connection. engines. Now they will be equipped with battery packs and Kongsberg Maritime’s 8-meter ESS 896 kWh deckhouse shore connections. will encompass a standard, type-approved, liquid-cooled "The conversion of all three into hybrid craft not only container solution with air-cooled SAVe Energy batteries. represents a ? rm commitment on the part of Island Off- The extensive scope of supply will also involve modi? ca- shore to the principles of environmental responsibility but tions to each vessel’s main switchboard and K-Power EMS also unlocks a wealth of potential for increased operational energy management system, as well as an upgrade of the ef? ciency and a marked reduction in maintenance require- Acon automation and alarm system.

ments. This in turn translates to signi? cant cost savings for the company," Kongsberg Maritime says. Deck space unaffected

In a mid-August statement, Island Offshore revealed

Instant benefits that the Island Crusader has already been sailing on bat-

In the past, PSVs have typically run multiple engines to tery since early summer.

achieve redundancy, with consequent impacts on fuel per- "Ordering energy-saving and eco-friendly systems for all formance, equipment health and emissions, Kongsberg says. three vessels is very pleasing. Two of the vessels are already

However, the Norwegian marine technology company says, running on LNG or optionally marine gasoil (MGO), and combining conventional LNG or diesel engines with Kongs- will now additionally have batteries and shore connec- berg’s SAVe Energy battery system produces instant bene? ts. tion installed. This will contribute signi? cantly to reduc- "The batteries allow for fewer engines to be running, ing emissions,” says Island Offshore's Managing Director, thus improving ef? ciency by increasing the load on the Tommy Walaunet.

remaining engines while also instantly delivering power on A battery pack can be used as the spare capacity and ex-

September 2020 24 MN