Wärtsilä will supply its advanced Energy Storage System (ESS) for retrofit on four Harvey Energy class dual-fuelled Platform Supply Vessels (PSVs).
The order builds on an earlier conversion which saw another vessel in this class fitted with a Wärtsilä ESS.
The upgrade project, which was placed by Harvey Gulf this month, will see all five vessels capable of operating on conventional fuel, marine LNG and battery power.
The PSVs will be capable of closed bus Dynamic Positioning (DP) operation running only one engine augmented by the Wärtsilä Energy Storage System. When stationary in the field or in port, the vessels will be able to operate on battery power only.
‘The conversion to tri-fuel technology is a tremendous addition to our already successful HARVEY ENERGY class PSVs,’ said Shane Guidry, Harvey Gulf President and CEO.
The four vessels, the Harvey Power, Harvey Liberty, Harvey Freedom, and Harvey America, will each be fitted with a Wärtsilä ESS comprising a Closed Bus-Tie 1360Kw Drive with 746 kWh 1100 VDC Batteries.
The retrofitting project will begin in 2021 and will be completed in early 2022.