Posted: August 14th, 2022

Developing Autonomous Inspection Drones for Monitoring Cargo Hold Conditions on Bulk Carriers

Developing Autonomous Inspection Drones for Monitoring Cargo Hold Conditions on Bulk Carriers

Bulk carriers are large ships that transport dry cargo such as coal, iron ore, grain, and other commodities across the oceans. They are essential for the global trade and economy, but they also face many challenges and risks. One of the major issues that affect the safety and efficiency of bulk carriers is the condition of their cargo holds. Cargo holds are the spaces where the cargo is stored and secured during the voyage. They are exposed to various environmental factors such as humidity, temperature, corrosion, and mechanical stress, which can deteriorate their structure and integrity over time. Moreover, cargo holds can also be contaminated by residues of previous cargoes, pests, or foreign objects, which can compromise the quality and safety of the current cargo.

To ensure that the cargo holds are in good condition and meet the standards and regulations of the shipping industry, they need to be inspected regularly before, during, and after each voyage. However, manual inspection of cargo holds is a time-consuming, labor-intensive, and hazardous task. It requires human inspectors to climb ladders, scaffolds, or ropes to access different parts of the cargo hold, which can pose serious risks of falls, injuries, or accidents. Furthermore, manual inspection can be subjective, inconsistent, or inaccurate, depending on the skills and experience of the inspectors.

To overcome these limitations and challenges, a new technology has emerged in recent years: autonomous inspection drones. These are small unmanned aerial vehicles (UAVs) that can fly inside the cargo holds and capture high-resolution images and videos of their condition. The drones are equipped with sensors, cameras, lights, and navigation systems that allow them to operate autonomously or remotely controlled by an operator. The drones can cover large areas in a short time and reach places that are difficult or dangerous for human inspectors to access. The images and videos collected by the drones can be transmitted in real-time or stored for later analysis by software algorithms or experts. The drones can also perform other tasks such as measuring dimensions, detecting defects, identifying contaminants, or assessing damages.

The benefits of using autonomous inspection drones for monitoring cargo hold conditions on bulk carriers are manifold. They can improve the speed, accuracy, consistency, and reliability of the inspection process. They can reduce the costs, time, and labor involved in manual inspection. They can enhance the safety and health of human inspectors by minimizing their exposure to hazardous environments. They can also increase the customer satisfaction and trust by providing transparent and objective evidence of the cargo hold condition.

Several research projects and pilot tests have been conducted to develop and evaluate autonomous inspection drones for cargo hold inspection. For example, a project funded by the European Union called INCASS (Inspection Capabilities for Enhanced Ship Safety) developed a prototype drone that can perform autonomous inspection of ship structures using computer vision and machine learning techniques (INCASS 2017). Another project called D4I (Drones for Inspection) tested a drone system that can inspect cargo holds using 3D mapping and defect detection algorithms (D4I 2019). A third project called SHIPINSPECTOR developed a drone system that can inspect cargo holds using thermal imaging and artificial intelligence methods (SHIPINSPECTOR 2020).

These projects have demonstrated the feasibility and potential of autonomous inspection drones for monitoring cargo hold conditions on bulk carriers. However, there are still some challenges and barriers that need to be addressed before this technology can be widely adopted by the shipping industry. Some of these challenges include:

– Regulatory and legal issues: There is a lack of clear and harmonized regulations and standards for the use of drones in maritime environments. Different countries and regions may have different rules and requirements for drone operations, such as licensing, certification, registration, insurance, privacy, security, etc. These regulations may affect the design, performance, functionality, and usability of the drone systems.
– Technical issues: There are still some technical limitations and difficulties that affect the performance and reliability of the drone systems. For example, the communication between the drones and the operators or ground stations may be affected by interference or signal loss. The navigation and localization of the drones may be challenging due to the complex and dynamic geometry of the cargo holds. The image processing and analysis may be affected by noise or distortion due to poor lighting or reflection conditions.
– Human factors: There are still some human factors that influence the acceptance and adoption of the drone systems by the end-users. For example, the operators or inspectors may need to acquire new skills and competencies to use the drone systems effectively and efficiently. The operators or inspectors may also have different attitudes or perceptions towards the drone systems, such as trust, confidence, satisfaction, etc.

To address these challenges and barriers, further research and development are needed to improve the technical performance and usability of the drone systems. Moreover,
collaboration and coordination among different stakeholders are needed to establish common standards
and regulations for the use of drones in maritime environments.

In conclusion,
autonomous inspection drones are a promising technology for monitoring cargo hold conditions on bulk carriers. They can improve the quality and efficiency of the inspection process, reduce the risks and costs of manual inspection, and enhance the safety and security of the cargo and the ship. However, there are still some challenges and barriers that need to be overcome before this technology can be widely adopted by the shipping industry. Therefore, further research and development are needed to advance the state-of-the-art of this technology and to facilitate its integration into the maritime sector.

References

D4I. 2019. “Drones for Inspection.” Accessed November 6, 2023. https://d4i-project.eu/.

INCASS. 2017. “Inspection Capabilities for Enhanced Ship Safety.” Accessed November 6, 2023. http://www.incass.eu/.

SHIPINSPECTOR. 2020. “SHIPINSPECTOR: Autonomous UAV-Based Thermal Imaging System for Real-Time Detection of Defects in Vessels.” Accessed November 6, 2023. https://cordis.europa.eu/project/id/871295.

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