NO-TILT SAIL

NO-TILT SAIL is an innovative wind-assisted propulsion technology for ships that completely eliminates vessel heeling during wind operation. Thanks to a unique configuration—mounting the sail on the windward side, tilted forward and leeward—the aerodynamic force acts horizontally, pushing the ship forward without generating a heeling moment. The solution can be applied to vessels of any size and enables the safe and efficient use of wind energy to reduce fuel consumption and emissions.

Benefits of Using NO-TILT SAIL

✅ Zero heel – enables safe cargo transport, especially for sensitive or fragile goods, regardless of wind strength or sailing conditions
✅ Lower fuel consumption – every square meter of sail surface translates into measurable savings and CO₂ reduction
✅ Higher energy efficiency – makes use of free and abundant wind energy to assist ship propulsion
✅ Regulatory compliance – supports maritime sector decarbonization and alignment with IMO environmental goals
✅ Scalability of sail size – no heel allows for larger sails than traditional systems, increasing power potential
✅ Improved vessel stability – wind force presses the ship into the water, functioning as a natural stabilizing ballast

Prototype and System Development

The NO-TILT SAIL system is composed of:

• a sail (S) stretched between points A (front lower corner), B (top corner), and C (rear corner)
• a mast (4) and boom (5), installed on the ship’s hull (H)
• a rigging system with sheets (6L/6R and 7L/7R) and anchoring points (8L/8R, 9L/9R, 10)
• a specially engineered geometry – the sail is mounted windward, tilted forward and leeward

This configuration ensures that the resultant wind force (F) acts along the ship’s centerline, eliminating any heeling moment. A demonstration-scale prototype is currently under development to validate the aerodynamic and stability performance of the technology.