Hull & Propeller

Oversea Hull & Propeller provides clarity on questions such as:

• Is it time to perform hull or propeller cleaning?
• How much efficiency is lost due to current fouling condition?
• Which cleaning providers deliver the best results?
• Should we advance or postpone dry-docking based on current performance
• Which anti-fouling systems perform best - and how should we plan their lifecycle?

With Oversea's Hull & Propeller support, you gain continuous insight into how biofouling affects your vessel's resistance, power demand, and fuel consumption — and the tools to act on it at the right time. The service monitors and analyses the condition of submerged surfaces across your fleet, quantifying the overconsumption caused by fouling on the hull, propeller, and rudder under real service conditions.

By combining automated onboard data, hindcast weather data, and physics-based performance modelling, Oversea isolates the impact of fouling from other operational variables such as speed, draft, trim, and weather. This makes it possible to track deterioration over time, objectively evaluate the effect of maintenance actions such as hull cleaning and propeller polishing, and compare performance consistently across vessels.

The analysis accounts for the full dry-docking cycle, with a normalised overconsumption metric that reflects the true condition of underwater surfaces regardless of how or where the vessel is operated. This provides the foundation for informed decisions on the timing of maintenance interventions, the selection of antifouling paint systems, and the management of dry-docking schedules.

As a customer you benefit from:

• Continuous monitoring of hull and propeller overconsumption across your fleet
• Daily support to detect fouling growth early and determine when to clean
• Monthly reports with maintenance effect analysis and fleet-wide benchmarking
• Guidance on optimal cleaning intervals, paint system performance, and dry-docking timing