UNDERWATER VIDEO INSPECTION

Vessel : MV DUCHESS EMERALD

Atlantic Safi Port

November 2, 2024.

The Importance of Underwater Inspections of Ship Components

Underwater inspection of a ship’s components is a crucial step in ensuring the safety, efficiency, and longevity of the vessel. Certain parts of the ship, such as the propeller, rudder, anodes, seawater intake, and anti-roll keel, are particularly exposed to the effects of seawater, ocean currents, and varying environmental conditions. Regular maintenance and inspection of these components help prevent serious failures and ensure optimal vessel performance.

1. The Propeller

The propeller is one of the most critical components of a ship, responsible for propulsion. Due to its constant exposure to saltwater and potential impacts with underwater debris, the propeller can suffer damage such as wear, corrosion, or cavitation. These issues can lead to reduced engine efficiency, higher fuel consumption, and decreased propulsion performance. Regular underwater inspections help identify these problems before they severely affect the vessel’s performance.

2. The Rudder

The rudder, like the propeller, is essential for the maneuverability of the ship. Regular underwater inspection of this component is necessary to detect any deformation, excessive wear, or corrosion that could compromise the vessel’s ability to change direction. A failure of the rudder can make the ship difficult to maneuver, which poses a major safety risk, especially in high-traffic areas or during loading and unloading operations.

3. The Anodes

Sacrificial anodes play a key role in protecting against corrosion of the ship’s underwater metal components. They are designed to corrode preferentially, thereby protecting critical metal parts such as the hull and propellers. Regular inspection of the anodes is essential to ensure they are not overly worn and continue to provide effective protection. If the anodes are depleted or missing, increased corrosion of other metal parts can occur, compromising the structural integrity of the ship.

4. The Seawater Intake

The seawater intake is another critical component that can be subject to blockages, leaks, or corrosion due to exposure to saltwater. This intake is essential for supplying the engine cooling system and other vital onboard systems. A blockage or leak in this system can lead to engine overheating or cooling system failures, with potentially catastrophic consequences. Underwater inspection helps check for debris or corrosion and ensures that the seawater intake is functioning properly.

5. The Anti-Roll Keel

The anti-roll keel is a device designed to reduce the ship’s rolling motion, particularly in rough sea conditions. It helps maintain the vessel’s stability and ensures passenger and crew comfort. The anti-roll keel, often equipped with ballast or hydraulic mechanisms, is subjected to high pressures and needs to be regularly monitored for any deformation, cracking, or wear on seals. Regular inspection of this keel ensures that the vessel remains stable even in rough seas, contributing to the safety of passengers and crew.

Why Underwater Inspection is Crucial

Underwater inspections not only help detect potential issues at an early stage but also prevent costly repairs and prolonged downtime for the vessel. A well-maintained and regularly inspected ship will have greater longevity and reliability. Additionally, underwater inspections are an essential means of complying with international maritime regulations, which often require periodic checks of the hull and underwater equipment.

Moreover, this preventive maintenance improves the ship’s energy performance, reduces fuel consumption, and minimizes the risk of unexpected breakdowns. For example, components like the propeller or rudder, when in poor condition, can cause increased resistance in the water, forcing the engine to work harder and consume more fuel.

Conclusion

Underwater inspection of key ship components, such as the propeller, rudder, anodes, seawater intake, and anti-roll keel, is vital for ensuring optimal vessel performance and safety. By identifying potential issues before they become serious, these inspections help minimize risks, extend the life of the ship, and reduce long-term maintenance costs. They also help ensure compliance with safety standards and protect the environment by reducing the risk of spills or other maritime incidents. For all these reasons, regular underwater inspections are a strategic investment in the efficient management of maritime fleets.

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Regular maintenance of machine components and sanitary systems is essential to ensure the safety and performance of vessels. Proper maintenance not only prevents costly breakdowns but also ensures compliance with maritime safety standards.

Importance of Maintenance:

1. Crew Safety: Well-functioning sanitary facilities are crucial for the well-being of the crew. A faulty sanitary system can lead to hygiene and health issues.
2. Operational Efficiency: Well-maintained machines operate optimally, improving the vessel’s performance and reducing operating costs.
3. Breakdown Prevention: Preventive maintenance helps identify and resolve issues before they become critical, avoiding unexpected downtime.

SWELL MARINE SERVICES: Your Partner for Underwater Maintenance

At SWELL MARINE SERVICES, we understand the importance of reliable and efficient maintenance. Our team of experienced divers specializes in the upkeep of machine components and sanitary systems on ships. With our expertise, we can perform:

• Underwater Inspections: Assessing plumbing systems and underwater machinery.
• Repairs and Replacements: Interventions on faulty components to ensure optimal operation.
• Customized Services: Tailored solutions to meet the specific needs of your vessel.

Our commitment to quality and safety makes us the ideal choice for all your underwater maintenance work. Trust SWELL MARINE SERVICES to ensure the performance and longevity of your vessel.

Contact us today to discuss your maintenance needs and discover how our team can help you maintain safe operations!

The operational efficiency of a ship extends beyond the water’s surface to the depths of the sea. A key element of this efficiency is the ship’s propeller shaft, and underwater clearance measurements of this shaft hold particular importance. This article explores the crucial significance of these measurements to ensure optimal performance beneath the surface.

1. Underwater Challenges of the Propeller Shaft

While most of a ship is visible on the surface, the propeller shaft and its components dive beneath the sea. Underwater conditions can be unforgiving, with increased pressure and corrosive environments. Propeller shaft clearances must be closely monitored to ensure their proper functioning in these conditions.

2. Prevention of Corrosion and Wear

Saltwater can be corrosive, and underwater components, including the propeller shaft, are exposed to an increased risk of wear and corrosion. Regular measurements help detect any early signs of deterioration, enabling corrective actions to prevent more extensive damage.

3. Friction Reduction for Increased Efficiency

Appropriate clearances underwater are crucial to minimize friction between the propeller shaft and its bearings. Excessive friction can lead to overheating, premature wear, and a decrease in the efficiency of the propulsion system. Precise measurements contribute to maintaining optimal clearances, ensuring maximum energy efficiency.

4. Real-time Monitoring for Enhanced Responsiveness

Underwater measurements of propeller shaft clearances are not limited to regular maintenance. Real-time monitoring, using advanced sensors, allows increased responsiveness to sudden changes or anomalies. This enables the quick prevention of potential problems and ensures the continuity of underwater operations.

5. Impact on Stealth and Maneuverability

In a military context, where stealth and maneuverability are crucial, accurate measurements of underwater propeller shaft clearances are essential. Proper adjustments can help reduce generated noise, thereby enhancing the stealthiness of the ship.

Conclusion

Underwater clearance measurements of a ship’s propeller shaft are a crucial aspect of modern maritime management. By combining regular monitoring, preventive measures, and real-time responsiveness, ship operators can ensure optimal performance, even in the demanding conditions of underwater navigation. This is how the maritime industry addresses the unique challenges of underwater navigation to guarantee the safety, sustainability, and efficiency of fleets.

Port de Casablanca

Année : 2023

Les carènes des navires, comme tous corps qui restent immergés dans de l’eau se trouvent rapidement colonisées par un biotope complexe, et dans un milieu maritime cette colonisation et cette prolifération se traduisent par l’apparition d’algues et de micro-organismes divers.

Depuis que l’être humain a commencé à mettre des bateaux à l’eau, il s’est rapidement aperçu qu’il fallait à tout prix les garder propres afin de conserver un hydrodynamisme et donc une vitesse optimale. Dans ce sens, il s’est vu concevoir des coques revêtues d’une couche protectrice appelée aujourd’hui antifouling.