keyboard_arrow_left See all news

Recent News

29 Sep, 2022 /
Seawork Press FP
Riverbusting the new regulations
A new sustainable Pusher Tug provides a state-of-the-art solution for new European emiss...
29 Sep, 2022 /
Seawork Press FP
Joining the fleet
Marine civil engineering contractor and marine plant hire specialist Teignmouth Maritime...
29 Sep, 2022 /
Seawork Press FP
Strong market foothold acquired
Manor Renewable Energy (MRE) has announced the acquisition of OPUS Marine (OPUS), a Germ...
28 Sep, 2022 /
Seawork Press FP
Saving a million tonnes
Accumulated CO2 reductions equal to that which a 16,000-hectare rainforest consumes in a...
27 Sep, 2022 /
Seawork Press FP
Smooth and safe operators
Responsible for all the safe operations of commercial vessels and interactions between l...
Press@seawork
/ 09 Sep, 2021
keyboard_arrow_left See all news

Design phase remodel improves efficiency

The new ‘Orion’ has been delivered to her owners, replacing their previous vessel but with the added advantage of improved hull efficiency thanks to a study during the early design phase.

The decision to remodel the hull form was based on results from a tank testing program which Macduff Ship Design and Macduff Shipyard were running with the intent to improve hull efficiency.

The study was conducted by the Wolfson Unit in Southampton, using CFD technology, to compare the proposed new vessel against the previous model; the results showed a net decrease in hull resistance at steaming speed. Following this Macduff Ship Design faired and finalised the hull form and produced a full set of steel construction plans along with conducting the incline experiment and producing the vessels stability booklet at the end of the build.

The hull of ‘Orion’ is built completely from steel, apart from the wheelhouse and mast, and features a double chine hull form, transom stern and modern bow designed to cut cleanly through the sea with less energy leading to a reduction in fuel consumption and emissions along with increased crew comfort.

The fabrication of the hull of ORION was subcontracted to Kedat Shipyard based in Szczecin, Poland with the construction reviewed and verified by Bureau Veritas to comply with the MCA’s construction standard and, on completion, the hull was towed to Macduff for outfitting by the yard.

The propulsion package features a 2.5 m fixed pitch propeller supplied by Wartsila, driven by a CATERPILLAR C32 main engine with 660 hp @ 1600-1800 rpm through a Masson Marine W7400 reversible gearbox with 9.077:1 reduction. ‘Orion’ is the seventh vessel built by the yard in recent years to feature this propulsion package, which has demonstrated itself to be both robust and adaptable with the Wide Operating Speed Range of the C32 main engine providing flexibility to achieve full power from a fixed pitch propeller both whilst steaming and trawling.

The efficiency gains predicted during the early design phase were realised during engine trials with the vessel achieving 9.1 knots at only 50% engine load and 10.5 knots at 100% load.

SeaworkConnect Macduff Ship Design

Processing. Please wait.
Loading...