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Technology

Navigating the ABCs of SCR

On the way to Tier IV compliance, it turns out that experience counts. In late February, the nation’s first Tier IV, Selective Catalytic Reduction (SCR) tugboat was christened. That’s probably not earthshaking news all…

Technology

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…

Marine Propulsion

HydroComp PropElements 2017- Update

HydroComp PropElements 2017 – the propeller “design for performance” code from HydroComp,Inc. of Durham NH USA – is the latest build of the company’s commercial software for marine propeller design and analysis…