Underwater Hull Cleaning in Bangladesh
The maritime industry in Bangladesh plays a vital role in the nation’s economy. With major seaports like Chittagong, Mongla, and Payra handling a large volume of cargo and shipping traffic, Bangladesh is emerging as a strategic player in South Asian trade and logistics. The development of the blue economy, which focuses on the sustainable use of ocean resources, has further highlighted the importance of efficient and eco-friendly maritime operations.
Regular maintenance, particularly underwater hull cleaning, is critical to maintaining a vessel’s performance, fuel efficiency, and lifespan. This essential service ensures ships can operate smoothly without the drag caused by biofouling, which accumulates over time.
What is Underwater Hull Cleaning?
Underwater hull cleaning refers to the process of removing marine organisms, algae, barnacles, and other debris that attach to the parts of a vessel’s hull. This cleaning is performed while the vessel is still in the water, typically by professional divers or Remotely Operated Vehicles (ROVs) equipped with brushes and suction devices.
Difference Between Underwater and Dry-Dock Cleaning
- Underwater Cleaning: Conducted without bringing the vessel to a dry dock. It is faster, more cost-effective, and reduces downtime.
- Dry-Dock Cleaning: Involves moving the vessel into a dry dock, lifting it out of the water, and performing extensive inspection and cleaning. This is more thorough but expensive and time-consuming.
Tools and Equipment Used
- Rotating brushes
- Hydraulic or pneumatic scrapers
- High-pressure water jets
- ROVs
- Full-gear certified divers
Why Underwater Hull Cleaning in Bangladesh is Important
Improved Fuel Efficiency and Speed
When marine growth increases resistance or “drag” on the hull, the engine must work harder, burning more fuel. Regular cleaning can improve fuel efficiency by up to 15-20%, reducing operating costs significantly.
Reduces Marine Biofouling and Invasive Species
Cleaning helps prevent the transport of invasive marine species between ports—a growing concern globally. These organisms can harm local marine ecosystems, leading to ecological and economic damage.
Regulatory Compliance
Agencies such as the International Maritime Organization (IMO) and MARPOL require vessels to maintain clean hulls to minimize environmental impact. Non-compliance can lead to heavy fines and detention at ports.
Prevents Corrosion and Structural Damage
Biofouling can accelerate galvanic corrosion, damaging the hull over time. Regular cleaning protects the structural integrity of the ship and avoids costly repairs.
The State of Underwater Hull Cleaning in Bangladesh
Market Overview
With increased maritime traffic and Bangladesh’s push to expand its shipping sector, the demand for underwater hull cleaning is growing. The country is investing in port infrastructure and private players are entering the market with modern solutions.
Key Ports and Service Zones
- Port of Chittagong: The busiest and largest port, serving as the primary hub for hull cleaning services.
- Mongla Port: Increasing in prominence due to its strategic location near the Sundarbans.
- Payra Port: An emerging port with growing cleaning and maintenance activities.
Local Companies and Providers
Several Bangladesh-based companies now offer underwater hull cleaning, including:
Growth in the Blue Economy
Hull cleaning contributes to the blue economy by:
- Enhancing vessel efficiency
- Promoting sustainability
- Generating employment for trained divers and marine engineers
Challenges Faced Underwater Water Hull in Bangladesh
Limited Use of Advanced Technology
While global trends move toward automated ROVs, Bangladesh’s adoption is still in early stages. Manual diver-based cleaning is predominant, which may limit speed and scalability.
Lack of Certified Divers and Training
There is a shortage of internationally certified divers, and many professionals lack access to continuous training programs, which hinders service quality.
Environmental and Legal Constraints
Improper cleaning techniques can harm marine life or breach environmental laws. There is a pressing need for standardized environmental protocols.
Cost and Accessibility
Smaller shipping companies often cannot afford frequent cleanings. Making services affordable without compromising quality remains a challenge.
Innovations and Eco-Friendly Practices
Eco-Friendly Antifouling Coatings
These coatings reduce the rate of marine growth and make cleaning easier. They are free from harmful biocides, unlike traditional coatings.
Biodegradable Cleaning Materials
Some providers are shifting to biodegradable cleaning agents, which reduce environmental impact during in-water operations.
Emerging Use of ROVs
Innovative firms are introducing automated ROVs with integrated cleaning brushes and cameras, offering safer and more efficient cleaning. Companies like HullWiper and Armach Robotics are global leaders in this space.
Public-Private Collaboration
Bangladesh’s Ministry of Shipping and private maritime firms are beginning to collaborate on sustainable practices and infrastructure upgrades to support marine services.
How to Choose a Reliable Partner for Underwater Hull Cleaning in Bangladesh
Key Qualities
- Certifications (IMCA, ADCI)
- Experience in local waters
- Strong safety records
- Use of environmentally safe methods
Questions to Ask
- What certifications do your divers hold?
- Do you offer ROV-based or manual cleaning?
- Can you provide a performance report post-cleaning?
Red Flags
- Lack of verifiable past clients or projects
- No compliance with environmental standards
- Low-cost offers with no quality guarantee
Vessel Efficiency Boost After Cleaning in Chittagong
In 2023, a bulk carrier undergoing hull cleaning by CleanShip Bangladesh at Chittagong Port reported measurable improvements:
- Fuel consumption dropped by 18%
- Cruising speed increased by 1.2 knots
- Biofouling removed: 6mm layer of barnacles and algae
- Complied with IMO biofouling management guidelines
This operation prevented further degradation and helped the vessel pass port inspections in Singapore and Rotterdam.
The Future of Underwater Hull Cleaning in Bangladesh
Technological Advancements
- Greater use of AI-driven underwater drones
- Remote monitoring systems for fouling detection
- Cloud-based performance tracking dashboards
Sustainable Shipping
Clean hulls lead to lower emissions, contributing to carbon neutrality goals set by the IMO for 2050. Bangladesh’s ship maintenance sector will play a crucial role in achieving this.
Government Initiatives and Policy Support
Policies supporting:
- Training and certification programs
- Investment in cleaning infrastructure
- Subsidies for smaller shipping operators
International partnerships with countries like Norway and Japan in maritime sustainability are expected to enhance local capabilities.
Conclusion
Underwater hull cleaning in Bangladesh is not just a routine maintenance task—it’s a strategic imperative for Bangladesh’s maritime industry. It enhances operational efficiency, ensures environmental compliance, and supports the vision of a sustainable blue economy.
As the shipping industry expands, vessel owners must invest in regular underwater hull cleaning to remain competitive and eco-conscious. With growing capabilities and market demand in Bangladesh, the time is ripe to embrace this service with modern, safe, and green methods.
FAQs
1. Can hull cleaning improve fuel consumption?
Yes, hull cleaning can improve fuel efficiency by up to 20%. Removing drag-causing biofouling means engines work less to maintain speed, which reduces fuel usage and emissions.
2. Is it mandatory to clean the hull before inspection or dry-docking?
Many shipowners choose to clean the hull before port state inspections or dry-docking to pass compliance checks, improve documentation, and reduce repair time. Clean hulls are also required for vessels entering certain biosecurity-sensitive regions.
3. What are the environmental risks of underwater hull cleaning in Bangladesh?
If not properly managed, hull cleaning can release biofouling waste into the ocean, potentially introducing invasive species or harming marine life. It’s important to use biodegradable cleaning materials and follow containment protocols.
4. Does underwater cleaning damage the hull’s coating?
When done professionally with the right tools and techniques, it does not damage the antifouling paint. However, aggressive or unskilled cleaning can remove protective coatings, which is why hiring certified professionals is crucial.
5. Is underwater hull cleaning allowed in all Bangladeshi ports?
Yes, underwater hull cleaning in Bangladesh is permitted in major ports like Chittagong and Mongla, provided it complies with environmental regulations. Always check with the port authority and choose a provider that follows IMO and MARPOL guidelines.