The 15,000 dwt chemical tankers will feature an energy storage system and shore power connections. (Image: Terntank)
Construction for two next-generation LNG-fuelled chemical tankers for Swedish operator Terntank began at the China Merchant Jinling shipyard in China on 31 June.
As reported, the contract for the pair of 15,000dwt chemical tankers was placed with CJML (formerly AVIC DIngheng Shipbuilding) in November, with the lead ship due for delivery in November 2021. The second newbuilding is due to follow in February 2022.
The vessels have been designed by Kongsberg (formerly Rolls-Royce Commercial Marine) in collaboration with Terntank and feature an energy storage system and shore power connections.
The energy storage system will permit the vessels to eliminate the use of auxiliary engines in arrival and departure from the port.
In addition, the vessels will be equipped with connections for shore power in order to eliminate emissions from auxiliary engines in port completely, permitting emission-free discharge and loading at ports.
“This is both costly and technically complicated because the connection must be carried out in an explosion area,” Terntank’s managing director Tryggve Möller said.
The vessel will be propelled by a dual-fuel engine, with the ability to operate on renewable liquefied biogas (LBG) and LNG blends. Terntank has experience of operating LNG-fuelled vessels with up to 10% of LBG in the fuel supply.
85% reduction in CO2 emissions
The new vessels extend the scope of the ship operators first dual-fuel tankers, which met IMO Tier III NOx emission limits without after-treatment.
“We met our goal of reducing carbon dioxide emissions by 40% through reduced fuel consumption and LNG operation in the first series. Now we are continuing our journey towards fossil-free operations with hybrid technology and over time also by biofuels,” Möller added.
In comments to a Swedish maritime publication, Möller noted that by combining the ESS system with LBG, the vessels could lower CO2 emission by up to 85% compared with existing chemical tankers.
The shore power connections are intended to be used with the Port of Gothenburg. The port is expected to make an investment decision about installing shore power connections before the end of 2020.