Patented propulsion-efficiency technology by EcoNavis
Patent-Protected Propulsion Technology
Eco Boss Cap
Save Fuel. Cut Emissions. Improve Propulsion Efficiency.
An engineered propeller boss cap that improves propulsion efficiency, installed at routine drydock in place of the existing boss cap.
Patented propulsion-efficiency technology by EcoNavis
4.0%
Measured at sea
LUENHO & KIAN · Handysize bulkers
Up to 5%*
Propulsion efficiency improvement
Drydock
Routine installation
≤ 1 year
Potential ROI
*Vessel type and operating profile dependent. The “up to 5%” potential is a separate figure from the 4.0% measured-at-sea result.
Proven at sea.
Measured, in-service performance across four vessels.
LUENHO
4.0%
Handysize bulker
IMO 9715220
Installed · in service
KIAN
4.0%
Handysize bulker
IMO 9890240
Installed · in service · M&V ongoing
YC FORTITUDE
3.2%
General cargo · 32,491 DWT
IMO 9587178
Installed · in service
SFYC ARAYA
3.1%
177 m timber carrier
IMO 9487043
Installed · in service
How it works.
- Reduces hub-vortex losses
- Redirects high-pressure flow through pressure-relief holes
- Removes the need for conventional boss-cap fins
- CFD-optimised for the vessel
- Routine drydock replacement
- Compatible with rudder-bulb-equipped vessels
Propeller inflow
↓
Propeller hub
↓
Eco Boss Cap redirects flow through pressure-relief holes
↓
Pressure-relief flow — reduced hub-vortex losses, improved propeller efficiency
Installation & rudder-bulb compatibility.
Rudder-bulb compatible — Eco Boss Cap can be effectively integrated on vessels fitted with a rudder bulb, complementing existing stern-flow optimisation arrangements.
Efficiency that goes beyond fuel savings.
Lower fuel consumption means lower CO₂ emissions — supporting improved IMO carbon-intensity performance and reducing exposure to emissions-related compliance costs, including the EU ETS. As maritime GHG pricing develops, vessel efficiency becomes increasingly valuable.
Introductory offer
25%
below normal selling price*
*Subject to vessel size, configuration, engineering scope and installation requirements.
Discuss Eco Boss Cap for your vessel.
Enquiries are handled regionally by our two principal organisations.
Technology & design: EcoNavis · Europe manufacture: Taurus ENG · Middle East manufacture: CCME-MCPS
Technology & design