DLBA COMMERCIAL NEWS
The 120' SATV Service Accommodation and Transfer Vessel
JUNE 12, 2020
DLBA Naval Architects, A Division of Gibbs & Cox, Inc., has developed a concept vessel for service in the U.S. Offshore Wind Market. The 120’ SATV (Service Accommodation and Transfer Vessel) is conceived as a possible alternative to traditional North Sea Crew Transfer Vessel (CTV) designs, specifically developed for the U.S. Market and Concept of Operations.
The U.S. offshore windfarm fields are typically further offshore than the EU counterparts, the predominant sea states are different, and different environmental restrictions impact vessel design and operation. The opportunity exists to develop a new type of vessel specifically suited for the U.S. market in order to reduce the total cost of energy. The SATV concept presents a change in the paradigm for delivery of windmill service technicians to offshore wind farms via CTVs. In the proposed operational model, the larger vessel would make one transit to and from the windfarm fields one a week, instead of daily transits. The vessel is sufficiently sized to stay on site for extended periods, and outfit appropriately to allow the service technicians to sleep on board overnight.
DLBA’s concept is based on a semi-planing monohull of aluminum construction. Volvo IPS propulsion has been chosen to meet EPA Tier 4 requirements, minimize the frequency of occurrence of loss of thrust when pushing up to stanchions, and ease of replacement to maximize vessel availability. The vessel is fitted with a gyrostabilizer to limit roll motions, as the monohull is inherently less stiff that a catamaran, in order to reduce vessel motions and maximize crew effectiveness. The vessels structure is designed to meet ABS HSC Rules for heavy weather offshore operation.
DLBA’s SATV provides an opportunity to change the status quo to a tailored vessel for the U.S. market. This alternate concept may provide a more cost effective means of delivering windmill service technicians to the windfarm. Get on board now!
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