Use of an ROV with Modulated Lighting for Diagnosing the Technical Condition of Submerged Port Wharf Structures

ABSTRACT: The technical condition of underwater port structures is critical to the safety and longevity of maritime infrastructure. Traditional inspection techniques, such as diver-assisted surveys, are constrained by safety risks, limited duration, and reduced efficiency in turbid waters. This study explores the application of a remotely operated vehicle (ROV) equipped with modulated lighting systems to enhance visibility and facilitate high-resolution imaging in optically complex underwater environments. The experiment employed a CHASING M2 ROV, modified with red, green, and white lighting configurations, to inspect the quay wall of a port. The impact of lighting color on image quality was evaluated. Results indicate that modulated lighting tailored to the optical properties of turbid coastal waters can improve image contrast and facilitate defect detection. The findings highlight the potential for advanced ROV systems to augment underwater inspection protocols in challenging optical environments.

KEYWORDS: Environment Protection, Marine Engineering, Port Infrastructure, Ports and Harbours, Remotely Operated Vehicle (ROV), Maintenance of Marine Structures, Underwater Inspection, Structural Integrity

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Citation note:

Kaizer A., Lednicka B., Tessmer A., Freda W., Soszyńska-Budny J., Ziajka E.: Use of an ROV with Modulated Lighting for Diagnosing the Technical Condition of Submerged Port Wharf Structures. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 19, No. 2, doi:10.12716/1001.19.02.17, pp. 477-482, 2025

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