Build OSVs with racing technology for improved operations

Seacat Scepter Brings Racing Technology for Improved Seakeeping and Operations (Chartwell Marine)

Published 01/26/2022 19:57 by

The Maritime Executive

Demands on the offshore wind supply chain are increasing as more wind farms are built that are both larger and further from the sea. Designers want to make the ships both more versatile and better suited to meet the challenges of the market.

The latest developments for the sector aim to use the technologies developed in the racing sector to improve the next generation of support ships. Chartwell Marine, which designs next generation vessels for the offshore wind support sector, is collaborating with marine design and engineering consultancy, BAR Technologies, who are working to leverage their successful designs for racing in the commercial sector.

Working together on proven platforms such as Chartwell’s catamarans, the two companies are working to achieve improved operability and incremental improvements in the offshore vessels’ energy efficiency and associated emissions performance.

The first design produced by the companies was recently launched and is now being tested at sea before delivery. the Seacat scepter, adapted to Chartwell 24 design, is being built at Diverse Marine shipyard in Cowes, Isle of Wight for OESV operator Seacat Services. It’s the first of two vessels that will be about 79 feet long, powered by Kongsberg waterjets, and capable of accommodating 26 passengers.

BAR highlights that hydrofoils, which are becoming popular and mature again as a technology in high-end yacht racing, raise the hull in the water to reduce frictional resistance, thereby improving energy efficiency and stability. BAR has developed the Foil Optimization and Stability System (FOSS), combining its America’s Cup heritage and expertise with Chartwell’s high-speed vessel design to solve the increasing emissions and energy efficiency challenges facing the offshore marine sector. facing energy supply.

They report that FOSS reduces hull drag by positioning the lift foil near the transom and controlling barrel trim to ensure the hull is operating at its most efficient trim across the entire speed range. FOSS not only contributes to a 30 percent improvement in energy efficiency through caster reduction, but also improves seakeeping and handling through general motion damping, active roll and trim behavior, and improved maneuverability and stability in varied sea conditions.

BAR Technologies says the vessel’s improved performance, comfort and operating window, which minimizes movement for crew and engineers onboard, will help the new vessels reach the wind turbines year-round quickly and with minimal fatigue be able.

the Seacat scepter is the first in a series of joint designs developed by Chartwell and BAR Tech. The ship has completed testing and is expected to enter service in the summer of 2022, followed by its sister ship a year later.

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