Samsung has shown its mettle in LNGC construction with the GasLog Wales (credit: GasLog).
Despite the industrial disruption in South Korea caused by the Covid-19 pandemic, two LNG carriers have been delivered in timely manner and on budget into the growing fleet controlled by GasLog, writes David Tinsley.
Handover of the 180,000m3-capacity GasLog Windsor was effected by Samsung Heavy Industries on April 1, followed by sistership GasLog Wales on May 11.
Registered in Bermuda and managed from Greece, GasLog has implemented an extensive newbuild programme entailing tonnage incorporating Winterthur Gas & Diesel (WinGD) dual-fuel, two stroke propulsion machinery and state-of-the-art GTT membrane containment technology. Four vessels of 174,000m3 and one of 180,000m3 were brought into service during 2018 and 2019, and GasLog Windsor and GasLog Wales are due to be joined by another three of the 180,000m3 design plus two of 174,000m3 this year and next.
The fleet investments are underpinned by long-term charter arrangements. GasLog Windsor has commenced a seven-year term with UK-based international energy group Centrica, while GasLog Wales has been fixed for 12 years to JERA subsidiary LNG Marine Transport. JERA is Japan’s largest power generator, providing one-third of the country’s electricity, and GasLog Wales will be mainly deployed carrying import shipments from the Freeport LNG Project in Texas.
Classed with American Bureau of Shipping (ABS), the new fleet additions are 297m in length overall and of 47m moulded breadth, with a design draught of 11.5m and scantling draught of 12.5m.
The primary power installation comprises two five-cylinder models of the WinGD X72DF series, each specified at 12,084kW on 74rpm, for a total output of 24,168kW transmitted by direct drive to a pair of fixed pitch propellers. Both the main machinery and propellers were manufactured on the Korean peninsula by HSD Engine Co and Silla Metal Co, respectively, as were the four generators. Two aggregates of 3,650kW apiece, and two of 2,750kW, were supplied by Hyundai Electric & Energy Systems.
The Mark III Flex Plus tank system embodied by GasLog Wales had set a new benchmark for the industry when unveiled by GTT, offering a boil-off rate (BOR) of only 0.07% of cargo volume per day. The lower BOR, compared with the 0.085% achieved with the Mark III Flex solution, has been achieved by increasing overall insulation thickness and enhancing the secondary barrier assembly.
The combination of low-speed, two-stroke dual-fuel engines and the higher-performance containment has a signal bearing on transportation cost competitiveness and appeal to charterers.
The next Samsung delivery to GasLog is scheduled to take place during the third quarter of 2020, whereupon the vessel will trade under Centrica charter. The subsequent two 174,000m3 and two 180,000m3 newbuilds, expected between late 2020 and the third quarter of 2021, are all committed to Cheniere Energy of Houston.