Foil development
From the early days of model testing using towed 1:10 scale models to the current use of the latest in CFD computer modelling, the Dart Ferries team has been at the forefront of foil development.
20+ years of experience with foil assist technology
The team at Dart Ferries have over 20 years experience in foil technology. For the new Dart Ferry project we have partnered with Team New Zealand Design Works to provide the latest in foil design for improved vessel efficiency and enhanced passenger comfort.
Model testing - No foil
Model testing of a 1:10 scale model in 2002. This image is of a model without foils. Note the significant wake & how deep the model sits in the water.
Model testing - with foil technology
Model testing of a 1:10 scale model in 2002. This image is of a model fitted with foils and towed at the same speed as the model in the adjacent photo.
Powercat - Performance improvements with foils
11.5-metre powercat launched in 2010 without foils. Foils were fitted in 2017 and provided a 15% reduction in fuel use while also improving rough water performance and passenger comfort.
Team New Zealand Design Works partnership
Team New Zealand Design Works will supply computational fluid dynamics modelling of the existing Dart Ferry hulls and use this information to identify optimum foil locations, foil shapes and foil sizes.
Image from Team New Zealand24-Metre Dart Ferry Foil Advantages
- The lift generated by the 5 carbon fibre foils fitted to the Dart ECO 2400 significantly reduces drag and increases fuel efficiency.
- The foils also greatly improve rough water performance, acting as stabilisers and giving passengers a more comfortable ride in rough conditions.
Dart Ferries Tri-Hull Foil Configuration
- The Dart Ferry Tri-Hull design enables the midships and aft foils to be moved further away from the vessel’s centreline and further outboard, providing additional athwartship stability.
- The smaller forward foil is designed to reduce fore and aft pitching.
