A Test Patch Survey is an R&D-focused inspection process used to evaluate the real-world performance of experimental or newly developed marine paint systems applied to vessel hulls.

The process involves identifying and marking specific sections of the hull as Test Paint Zones, where selected coatings are applied under controlled conditions. Certified divers then carry out high-resolution underwater filming and visual inspections of these zones over time.

Why a Test Patch Survey Is Important

• Verifies coating adhesion to existing surfaces

• Confirms surface preparation methods are effective

• Evaluates coating performance in marine conditions

• Reduces risk of coating failure

• Saves time and cost by preventing rework

Applications

• Underwater painting projects

• Offshore structures

• Desalination plant intakes and outfalls

• Jetties, piles, and marine pipelines

• Ship hull and quay wall coatings

This comparative analysis provides valuable data for paint manufacturers, ship owners, and research teams, supporting product development, optimization, and long-term coating performance evaluation.