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Abstract
This project presents the design and fabrication of a cost-effective submersible RemotelyOperated Vehicle (ROV) intended for underwater exploration, specifically for lakebed surveysand crack observations. The study aims to develop an affordable, durable, and highly maneuverable ROV using a syringe-actuated buoyancy system, PVC hull construction, andacombination of propellers and pumps for navigation. Unlike conventional ROVs that relysolelyon thrusters, this design integrates a novel buoyancy control mechanism to enhance precisionandstability in shallow water operations. The development process involved conceptualizing the structural framework, selecting appropriate materials, and integrating propulsion, control, and buoyancy systems. The ROVwasfabricated using lightweight and corrosion-resistant materials such as PVC pipes and acrylicplates, ensuring durability and cost efficiency. A single brushless motor provided forwardpropulsion, while four strategically placed syringe-actuated pumps enabled controlled vertical and lateral movement. The prototype underwent rigorous testing to evaluate maneuverability, depth control, and structural integrity. Results demonstrated that the ROV successfully achieved stable and precise movements, makingit an effective tool for underwater inspections. The syringe-actuated buoyancy systemprovidedreliable depth control, although minor delays in response time were noted. While the designproved efficient for shallow-water exploration, enhancements in power efficiency and material optimization are recommended for future iterations. Overall, this project contributes to the advancement of affordable underwater robotics, offering a practical solution for research, environmental monitoring, and industrial applications
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co-supervisor