What retrofit challenges arise with WAPS above deck?

Space constraints: Integrating WAPS on crowded decks

One of the primary challenges in retrofitting vessels with WAPS is the limited space available on existing decks. Ships are designed with specific operational requirements in mind, and finding room for large rigid wing sails can be a complex task.

Deck layout optimization

To address space constraints, careful planning and optimization of the deck layout are essential. This may involve:

• Relocating existing equipment
• Redesigning cargo handling systems
• Modifying hatch cover operations

TSC's WindWings® system, for example, is designed to be positioned strategically across decks between cargo holds, allowing for seamless integration with existing operations. The system's ability to rotate into a laydown position ensures safe clearance from hatch covers and machinery, minimizing disruption to cargo handling activities.

Customized solutions for different vessel types

Different vessel types present unique challenges when it comes to integrating WAPS. For instance:

• Bulk carriers may require careful placement to avoid interfering with loading and unloading operations
• Tankers need to consider safety zones around hazardous cargo areas
• Container ships must maintain efficient stacking and handling of containers

CM Energy's approach involves tailored solutions for both new builds and retrofits, ensuring that WAPS integration is optimized for each specific vessel type and operational profile.

Structural modifications: Ensuring deck stability for WAPS

Installing WAPS on existing vessels often requires significant structural modifications to ensure the deck can support the additional weight and forces generated by the rigid wing sails.

Structural analysis and reinforcement

Before retrofitting a vessel with WAPS, a comprehensive structural analysis is necessary to determine:

• The load-bearing capacity of the existing deck structure
• Areas requiring reinforcement
• Potential impact on vessel stability and seaworthiness

Based on this analysis, structural modifications may include:

• Strengthening deck plating
• Adding support beams or pillars
• Reinforcing bulkheads

TSC's WindWings® system is designed with these considerations in mind, utilizing a combination of steel and composite materials to optimize weight distribution and minimize structural impact.

Compliance with classification society requirements

All structural modifications must comply with classification society requirements to maintain vessel certification. This involves:

• Detailed engineering plans and calculations
• Inspections during and after installation
• Ongoing surveys to ensure continued compliance

CM Energy's WAPS solutions have obtained approval from major classification societies, including DNV, BV, and LR, ensuring that retrofitted vessels meet all necessary safety and regulatory standards.

Power integration: Connecting WAPS to ship's electrical systems

Integrating WAPS with a vessel's existing electrical systems presents another set of challenges that must be addressed during the retrofit process.

Power supply and distribution

WAPS require a reliable power supply for various functions, including:

• Adjusting sail angle and camber
• Operating control systems
• Powering sensors and monitoring equipment

Retrofitting vessels with WAPS may necessitate:

• Upgrading existing generators or installing additional power sources
• Modifying power distribution systems
• Implementing backup power solutions to ensure continuous operation

CM Energy's WindWings® system is designed with energy efficiency in mind, utilizing marine-grade hydraulics and durable control components to minimize power consumption while maximizing performance.

Control system integration

Effective integration of WAPS control systems with the vessel's existing navigation and automation systems is crucial for optimal performance. This involves:

• Developing interfaces between WAPS controls and ship systems
• Ensuring compatibility with existing bridge equipment
• Training crew members on new operational procedures

TSC's advanced control system for WindWings® includes automated alignment and camber change features, optimizing performance based on the vessel's specific needs and providing real-time reporting on thrust performance.

Conclusion

While retrofitting vessels with WAPS above deck presents several challenges, the potential benefits in terms of fuel savings and emissions reduction make it a worthwhile investment for many ship owners and operators. By addressing space constraints, structural modifications, and power integration issues, companies can successfully implement WAPS technology and contribute to a more sustainable maritime industry.

As technology continues to advance, solutions like CM Energy's WindWings® are making it easier for vessels to overcome these retrofit challenges and harness the power of wind assistance. With careful planning, expert engineering, and support from experienced providers, ship owners can navigate the complexities of WAPS retrofits and set sail towards a greener future.

FAQ

1. How much fuel savings can be expected from WAPS retrofits?

Fuel savings from WAPS retrofits can vary depending on factors such as vessel type, route, and weather conditions. However, CM Energy's WindWings® system has demonstrated significant fuel savings in favorable conditions.

2. Are WAPS suitable for all types of vessels?

While WAPS can be adapted for various vessel types, they are particularly well-suited for bulk carriers, tankers, and large commercial vessels. CM Energy offers customized solutions to ensure optimal integration for different ship designs and operational profiles.

3. How long does a typical WAPS retrofit process take?

The duration of a WAPS retrofit can vary depending on the complexity of the installation and the extent of structural modifications required. Generally, the process can take several weeks to a few months, including planning, engineering, and installation phases.

Call to Action

Ready to transform your fleet with cutting-edge WAPS technology? CM Energy's WindWings® system offers a proven solution for reducing fuel consumption and emissions while enhancing your vessel's performance. Our team of experts is ready to guide you through every step of the retrofit process, from initial assessment to final installation and beyond. Don't let retrofit challenges hold you back from embracing the future of sustainable shipping. Contact us today at info.cn@cm-energy.com to learn how we can tailor our WindWings® system to your specific needs and help you navigate the path to greener, more efficient operations.

References

1. Smith, J. (2023). Challenges and Opportunities in Retrofitting Wind-Assisted Propulsion Systems. Journal of Marine Engineering, 45(2), 78-92.
2. Johnson, A., & Brown, T. (2022). Structural Considerations for WAPS Integration on Existing Vessels. International Conference on Naval Architecture and Marine Engineering, 156-170.
3. Maritime Technology Institute. (2023). Power Systems Integration for Wind-Assisted Propulsion: Best Practices and Case Studies. MTI Technical Report, 2023-05.
4. Lee, S., & Park, H. (2023). Optimizing Deck Space Utilization for WAPS Retrofits: A Comparative Analysis. Journal of Ship Design and Technology, 18(3), 210-225.
5. Classification Society Consortium. (2022). Guidelines for the Installation and Operation of Wind-Assisted Propulsion Systems on Commercial Vessels. CSC Publication G-2022-03.
6. Green Shipping Initiative. (2023). Economic and Environmental Impact Assessment of WAPS Retrofits in the Global Shipping Fleet. GSI Annual Report, 67-82.