Propeller nozzles (ducts/Kort nozzles) enhance thrust and efficiency—especially at low speeds—while improving control for workboats and high-load vessels.
We provide inspection, servicing, and retrofit support for propeller nozzle systems used to increase bollard pull, improve propulsion efficiency, and protect the propeller in demanding operating conditions. Nozzle performance depends heavily on correct geometry, clearances, structural integrity, and alignment with the propeller and shaft line. Our team checks for deformation, erosion, cavitation damage, coating wear, and fastener or weld defects that can reduce efficiency and increase vibration or noise. We support both maintenance and modification projects, helping restore optimal hydrodynamic performance and reliable operation.
Inspection of nozzle structure, welds, coatings, and fastening systems
Clearance and alignment checks between propeller, nozzle, and shaft line
Damage assessment for cavitation, erosion, corrosion, and deformation
Repair and refurbishment support (including coating and fairing recommendations)
Retrofit and optimization guidance for improved thrust and fuel efficiency
Documentation and condition reporting for dry-dock and maintenance planning
