Washburn & Doughty Associates, USA, has unveiled its new 24-metre Z-drive tug design.
The vessel is designed for ship handling and harbour work. It measures less than 150 gross tonnes and has a load line length of less than 24.4 metres, allowing it to operate without a load line assignments.
The tug is designed to exceed ABS standards and customers can choose to specify ABS class.
The vessel's clean underwater lines and two aft Z-drives create the manoeuvrability necessary to be a truly versatile harbour tug. Design features include a wide beam to enhance indirect capabilities and stability while a broad bow will evenly distribute the point-of-contact load between the tug and the ship.
Since the tug is an in-house design, customers have the flexibility to modify the vessel to suit particular requirements. The vessel is adaptable to any high-speed main engines between 2,980 and 3,730kW with matching Z-drive units.
The tug has straight line carbon fibre shafts. Customers can specify off-ship fire-fighting, a stern capstan and/or a bow winch.
The vessel can be arranged as a day boat or outfitted for round the clock operations with up to four staterooms for eight crewmembers. For 24/7 service, the design features a full galley, dining area and head with shower.