ABB is to equip two new shuttle tankers for AET with future-proof solutions that are expected to deliver improved operational efficiency and lower emissions compared with similar tankers.
The twin-skeg 125,000 DWT shuttle tankers will feature a range of ABB’s power and automation solutions, including the power distribution system Onboard DC GridTM, which enables integration of variable speed generators, energy storage and new energy sources such as fuel cells. According to ABB, the integrated power and automation solutions will contribute to fuel savings of 1,000 tonnes per year.
The vessels will feature ABB Ability Marine Remote Diagnostic System, which reduces on-call visits of service engineers up to 70%, and maintenance costs up to 50%, also increasing the safety and reliability through extended and predictive monitoring.
The power system on board will be controlled by ABB’s integrated Power and Energy Management System (PEMS), which will enable generators to run at variable speeds in the optimal way. This is different to traditional AC systems, where generators run at fixed maximum speed irrespective of the power demand on board, leading to excessive engine wear and poor fuel efficiency at lower loads.
Together with PEMS, ABB’s Integrated Control and Monitoring System will enable the crew to operate the vessels’ steaming and DP operations at the lowest possible specific fuel consumption.
The main and auxiliary engines of the tankers will also have a dual-fuel option, which will allow them to operate on liquefied natural gas (LNG), as well as traditional fuel.
“It is clear that the next generation of ships – electric, digital, and connected – spells a bright future for DC-based electric propulsion,” says John Olav Lindtjørn, Global Product Manager for Onboard DC Grid, ABB Marine & Ports.
The vessels have been ordered by AET and will be contracted to Statoil ASA, transporting oil from the Statoil fields on the Norwegian and UK continental shelves to land-based terminals. They will have a service life of 30 years, operating in the harsh conditions of the North Sea.
The vessels will be delivered by the South Korean shipyard, Samsung Heavy Industries, in 2019.