Subsea7 reported the award of a “sizeable”contract valued at between US$50M and US$150M in Asia Pacific (APAC) region
The Oslo-listed subsea engineering company did not reveal any further details about the APAC contract, only saying engineering work will commence immediately, and offshore activity is scheduled for 2024 and 2025.
Subsea 7 controls a diverse fleet of high-spec vessels for pipelay, construction, survey, remote intervention, diving support, heavy lift, renewables and decommissioning.
As OSJ previously reported, Luxembourg-based Subsea 7 will retrofit its DP-class 3 heavy /flex-lay vessel Seven Arctic with batteries in cooperation with Bakker Sliedrecht.
“Bakker have been the main electrical integrator on a number of our specialist DP vessels built over the last 15 years and have also provided ongoing operational support on DP and electrical issues. We are pleased to continue our relationship with Bakker with the award of this contract to hybridise Seven Arctic. This represents an important milestone in our sustainability programme to reduce our CO2 emissions”, said Subsea 7 vice president asset development Stuart Smith.
Seven Arctic has a total installed power of 27 MW and is suitable for worldwide operation in water to 3,000 m.
“Bakker Sliedrecht’s Energy Storage System consists of two containerised power converters with a nominal power of 3,750 kW each and 1,500 kWh of batteries,” said Bakker Sliedrecht head of technology Arend van der Velde. “With this capacity, the key functions for improved vessel performance are realised by the Power Plant Optimiser control system.”
The Spinning Reserve function enables the vessel to operate safely with fewer diesel generators online and those online with a higher utilisation. When the Peak Shaving function is active, the online diesel generators shift into a more optimal range with reduced intermittent starting of an additional generator. With Ramp Rate Control the online generators are supported by the batteries in strong load fluctuations, improving grid dynamics and stability and reducing wear and tear. Based on the vessel’s operating profile, an estimated reduction of 5,000 tons of CO2 emissions is expected.
