Design Rationale 

The eConowind-unit is integrated in a 40 ft container from which two folding VentiFoils can be deployed: ridged aspirated wing profiles acting as sails. The VentiFoils are designed as optimal compact (non-rotating) wing profiles, creating superior thrust by means of the principle of boundary-layer-suction, for which ventilators are mounted in the VentiFoils.

Due to the generated thrust by the eConowind-unit, the thrust of the propeller can be reduced to maintain the same speed. This leads to fuel savings and emission reductions of 10 to 30%, depending on vessel type and number of eConowind-units, what brings us closer to IMOs goals on reduction of carbon emissions.

Installation

The eConowind-unit can be very easily retrofitted on existing vessels, especially if container fittings are available on deck or hatchcovers, or otherwise on a dedicated foundation. The eConowind unit can be mounted with regular twistlocks, enabling plug & play installation and/or removing from the hatchcovers for cargo loading and unloading. For new vessels Conoship can integrate eConowindunits (or individual VentiFoils) in the design on dedicated positions.

Autonomous operation

From a bridge-panel the eConowind-unit can be closed or initiated for operation. The eConowind-unit senses the wind speed and -direction and autonomously deploys the VentiFoils, adjusting the ventilator power and optimizing the angle of each VentiFoil relative to the apparent wind.
In heavy and/or unfavourable wind conditions the VentiFoils are closed down automatically, minimising crew efforts and ensuring safe operations.