Steps to achieve an efficient hull configuration

• Catamaran vessel for stability reasons and to avoid ballast water.
• Hundreds of computer simulations to find best candidates.
• First model with bulbous bow tested by the University of Athens.
• Good resistance results but deficient sea keeping.
• New computer simulations for a wave-piercing bow with podded-drive.
• Second model self propelled with the new bow tested by Marintek – Trondheim.
• Excellent results, sea keeping tests finished.

Towing Tank Test 75% Pay load - Athens (February 2011)

Towing Test Model - Marintek (August 2011)

Test results second model (calm water):

Steps executed to develop wind propulsion system

• Developing a crane-sail configuration attached to the moving Superstructure.
• Designing four different sail-wing forms, studying lifting equipment and moments.
• University of Madrid studied 6 operation areas from the Baltic to West Africa, wind forces and occurrences.
• Simulating by computer models four different sail-wing forms.
• Building a scale model of the sail-wing and submitting to wind tunnel test, verified the simulation (- 9%).
• Using the obtained kW power for the operation profile and stability calculations.

Harvesting wind - up to 30kn wind, 4m waves

The table shows the annual mean wind energy per day in the different routes:

Wind tunnel test - University of Madrid

Steps executed to develop solar collection system

• University of Madrid studied 6 operation areas from the Baltic to West Africa, solar intensity and occurrences.
• Using the most advanced solar foils like in “Planet Solar” with 164W/m2.
• Plating 1200m2 of the sail-wing with this solar foil.
• Consuming the obtained energy for Superstructure and Bridge.
• Storing excessive energy in 500kWh battery in Superstructure.
• The vessel is able to run between Tripoli and Alexandria with 7kn during day time.
• By using wind power, with sail up, solar efficiency will decrease.

Harvesting solar

 The table shows the annual mean solar energy per day in the different routes: