DNV GL Adds Asymmetric Stern To ECO Lines
A vessel with an asymmetric stern has a twisted aft shape that is designed to account for the differing flow conditions on each side of the propeller. The idea emerged in the 1960s, but due to the difficulty of manually developing the optimal shape, this design failed to make a large impact at the time. DNV GL has revisited the idea and, using high-fidelity computer fluid dynamics (CFD) in combination with parametric formal optimization, the classification society can now offer ship owners the option of incorporating an asymmetric stern into their new vessels. “Basically, what we are now able to do is model an aft shape that acts as a propulsion improving device…
Retrofitting Containerships - Where The Savings Are
Despite the low fuel prices, energy efficiency is a key differentiator for shipping companies competing for cargo. The Canada-based owner Seaspan has worked with DNV GL on a series of projects aimed at investigating possible efficiency gains through retrofits. “We are constantly trying to improve the performance of our fleet, in order to meet current market requirements. DNV GL’s dedicated service for retrofit projects, based on computational fluid dynamics (CFD), formal optimization and high-performance computing has made them a valued partner for us,” says Ian Robinson, Project Manager, Technology & Development at Seaspan. “In one of the most recent projects…
FutureShip ECO-Assistant 4.0 Adds New Features
The latest version of ECO-Assistant, the trim optimisation tool from FutureShip, the maritime consulting arm of Germanischer Lloyd, incorporates a number of new features, including a fuel consumption calculator, system usage monitoring, benefit reporting and an E-learning module to speed familiarity with the system. With some 600 installations since its introduction three years ago, ECO-Assistant has been proven to deliver significant energy fuel savings to its users and the new features will enhance the functionality and usability of the system.
