Ship operator and manager Vroon has achieved a 22 per cent fuel saving onboard its container vessel, the Indian Express, by optimising the propulsion system with a controllable pitch propeller.
The shipping company worked with Berg Propulsion to investigate the possibility of optimising the propulsion system to improve energy efficiency and reduce CO2 emissions to meet regulations set by the International Maritime Organization (IMO) and improve its sustainability profile.
Berg Propulsion worked with Vroon to analyse the vessel’s current and future operational requirements and determined its operational profile. “The performance of the original propeller blades was benchmarked against the vessel’s defined operation profile,” said David Sakandelidze, Berg Propulsion business manager – energy and efficiency.
From here, Berg Propulsion’s simulation tools were used to develop a new propeller geometry. Initial modelling showed superior ship performance could be achieved with the new propeller design. In line with these findings, Berg Propulsion designed blades tailored for the operation, improving efficiency significantly.
“Efficiency gains are made for much of the time and, at 12 knots, the new blades achieve up to 50 per cent higher efficiency than the ones they replace,” said Sakandelidze.
With performance improved at the speeds most commonly required during operations, Indian Express would achieve 22 per cent fuel saving overall, as well as lower emissions that should go farther than the requirements of the IMO’s carbon Intensity Initiative goals for 2026.
“We have recently put a new focus on CII and EEXI and supporting customers to improve and optimise vessels already in operation,” said Jonas Nyberg, managing director west for Berg Propulsion. “We are excited to partner our customers, and to help them become more efficient while reducing their environmental footprint.”