DISCOVER Magazine #6

New deepwater AHTS offers over 200 tonnes BP and an extended winch package

Published in category: Offshore Wind
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Damen introduces new Anchor Handler design

Damen Shipyards Group introduces its newly designed Damen AHTS 200, a versatile deepwater Anchor Handling Tug Supplier able to operate in water depths in excess of 3,000 m. The AHTS 200 is the latest addition to the Damen Offshore Series.

Following the company’s ambitions to increase its market share in the offshore industry, Damen heavily invests in designing state-of-the-art vessels for several offshore sub-markets, noticeably the Offshore Support, Offshore Wind, (Seismic) Research and Transport & Installation industries. Backed by ample R&D and engineering capacity, its own construction yards, specialised partner yards and a rapidly expanding service organisation, Damen feels confident that the chosen approach will be successful.

Research

The typical Damen design philosophy, featuring values like safety, functionality, standardisation, modularisation, ease of maintenance and overall quality, can also be found in the Damen AHTS 200. Extensive research analysis was executed on hull optimisation, sea-keeping qualities, noise and vibration reduction, fuel oil consumption reduction, changing rules and regulations and client-needs and lessons-learned from other Damen designs.

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Innovative winch package

The Damen AHTS 200 includes a new and innovative winch arrangement which is quite decisive for the overall dimensions and layout of the vessel. For the development of this extensive winch package Damen teamed-up with Huisman Equipment (the Netherlands), which specialises in heavy lift and deepwater cranes, winches and drilling equipment. The electrically driven winches resulting from this cooperation represent an innovative approach as the market is traditionally dominated by low-pressure hydraulics. The electrical-drive winches provide a clean, green, economical, functional and safe solution for the anticipated operations.

Propulsion

The vessel is designed to generate 200-250 tonnes Bollard Pull and is fitted with engines in a father-son layout, featuring twin- in single-out gearboxes driving CP propellers in a nozzle. High performance flap-type rudders fitted to rotary vane steering gears facilitate a high degree of manoeuvrability supported by ample side thrust capacity, including tunnel thrusters as well as retractable thrusters in the fore- and aft ship.

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Outfitting options

Forward of the winches ample space has been reserved for the fitting of a high-end ROV system with the possibility of launching through a side door. The high beam AHTS could serve as a suitable platform for mounting a subsea construction crane. The design can easily be upgraded with dedicated anti-heeling systems, moon pools and sophisticated diving systems.

Accommodation

The comfortable accommodation can host up to 45 persons in single and double cabins fitted according to the Damen Business or Executive Line comprising modern and durable materials. Special attention is paid to sufficient natural lighting through maximum-sized windows. State-of-the-art infotainment systems, offering multiple levels of data communication, support the functionality and comfort of the vessel.

Although driven by its standardisation philosophy Damen offers ample opportunities to include owner’s standards and component choices to give them optimal support for their operations. The vessel is designed following an extensive DNV Class notation, although other class societies may be considered as well.

Damen is proud to present this design and is looking forward to discussing the details with possible clients.

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