Innovative propeller tunnel for catamaran ferry
A 30m passenger ferry for operation in the Seychelles is the first vessel to feature Australian boatbuilder and designer Incat Crowther’s innovative new generation propeller tunnel.
The tunnel significantly reduces propeller draft and yet offers a flat transom which can integrate with standard fixed or active interceptor systems.
Incat Crowther’s unique tunnel design was extensively modelled with in-house CFD software prior to being used on an active project.
During sea trials, the Isle of La Digue demonstrated a six percent fuel saving over the standard hull. The vessel achieved speed of 32 knots at maximum deadweight, and a very low fuel burn at its operational cruising speed of 28 knots.
In addition, attention has been paid to highly-loaded areas of the vessel’s structure, providing a robust and durable vessel capable of operating safely over the longer term on this very demanding run. The structure has been optimized to the route’s specific sea conditions, using Incat Crowther’s in-house FEA systems.
Multiple features have been implemented to enhance passenger comfort, including the latest generation centre bow, an active ‘high throw’ interceptor ride control system, large viewing windows and integrated blinds in the business class cabin to reduce heat and glare.
By Jake Frith
