Weatherfoil delivers on world class catamaran

Published: 08 March 2019
AMCA member, Weatherfoil, recently completed work as the mechanical services contractor on Incat Tasmania's new world class wave piercing catamaran - the Saint John Paul II.

With a project value in excess of $100 million, the 110-metre ferry carries up to 900 passengers and 24-crew, and will be the largest high-speed Ro-Pax catamaran in the Mediterranean, second largest in the world.

Weatherfoil was awarded the contract to supply and install the HVAC component of the vessel and began work in December 2017. In addition to the main refrigeration plant, Weatherfoil manufactured and installed a built-up HVAC system monitored and controlled by the ship's information management system.

The air conditioning system is comprised of four 250 kW variable speed scroll compressors. A seawater cooled central refrigeration plant provides cooling to the direct expansion coils contained in eight air handling units located throughout the vessel.

The ductwork and air handling units were custom built in Weatherfoil's Derwent Park workshop using aluminium and stainless steel to address weight considerations and to combat harsh marine environments. Cool or heated air was supplied throughout the vessel through a ductwork system incorporating ceiling and bulkhead-mounted diffusers.

Equipment components were required to meet strict statutory marine regulations.

The basic design was prepared by ASC Engineers and is capable of maintaining between 20 and 22 degrees Celsius at 50 to 55% with a full passenger load and ambient temperature between 12 and 37 degrees at 80%.

Weatherfoil subcontracted Tasmanian companies Astrotec, Innotech Tasmania and Kibbey & Cooper Pty Ltd for the electrical, controls and refrigeration components of the contract.

The Saint John Paul II set sail from Hobart on the February 6, and will arrive in Malta on around the February 28.


The AMCA thanks Rachael Cranfield at Weatherfoil for this story and Incat Tasmania for the use of their photographic image.