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How To Ship Offshore Wind Turbine Platforms: A Guide
Pre-shipment Planning
Assess Dimensions & Weight
Precise measurements (length, width, height) and weight calculations are vital. Inaccurate estimations can cause vessel unsuitability, delays, and increased costs. Consider the platform's centre of gravity for stability calculations.
Route Survey
Identify optimal shipping routes, considering waterway depths, bridge clearances, and port capabilities (handling oversized and heavy (OOG) cargo). Account for potential weather conditions and navigational hazards.
Port Selection
Choose ports with suitable infrastructure: heavy-lift cranes with sufficient lifting capacity, ample quayside space for manoeuvring, and specialised equipment for handling oversized and heavy (OOG) cargo. Consider port congestion and availability.
Types of Ports
- Deepwater Ports: Essential for larger vessels and platforms.
- Specialised Heavy-Lift Ports: Equipped with the necessary cranes and equipment.
- Multi-purpose Ports: May require additional equipment and planning.
Vessel Selection
Select a specialised heavy-lift vessel (semi-submersible, heavy-lift ship, or barge) with sufficient lifting capacity and deck space to accommodate the platform's dimensions and weight. Consider vessel stability, speed, and fuel efficiency.
Vessel Types
- Semi-submersible Heavy-Lift Vessels: Ideal for very large and heavy platforms.
- Heavy-Lift Ships: Offer a balance of capacity and speed.
- Barges: Often used for shorter distances or in conjunction with other vessels.
Permits & Approvals
Obtain necessary permits and approvals from relevant maritime authorities, customs agencies, and environmental protection bodies. Delays in obtaining permits can significantly impact the project timeline.
Insurance
Secure comprehensive cargo insurance covering potential risks during transit, including damage, loss, and delays.
Packaging & Securing
Develop a detailed plan for securing the platform on the vessel using heavy-duty lashing systems. Consider the platform's centre of gravity and potential stress points during transit.
Loading & Transportation
On-site Preparation
Prepare the platform for transport, including cleaning, applying protective coatings, and final inspections. Ensure all loose parts are secured.
Heavy-Lift Operations
Utilise specialised heavy-lift equipment (cranes, jacks, and other lifting gear) for loading the platform onto the vessel. This requires careful coordination and adherence to safety protocols.
Securing Cargo
Implement the pre-planned securing system, ensuring stability during transit. Regular inspections are crucial.
Voyage Monitoring
Track the vessel's progress and monitor environmental conditions (weather, sea state) throughout the voyage.
Unloading & Delivery
Port Arrival
Coordinate with the receiving port for unloading operations, including crane availability, and other logistical arrangements. Ensure all necessary permits and documentation are in order.
Offloading
Use specialised heavy-lift equipment to offload the platform. This process requires careful planning and execution.
Final Delivery
Transport the platform to the installation site using appropriate methods (barges, specialised trailers, or other suitable means).
Documentation
Bill of Lading
Ensure accurate documentation reflecting the cargo's specifics (dimensions, weight, value).
Customs Documentation
Prepare and submit all necessary customs documentation to comply with import/export regulations.
Insurance Documentation
Maintain records of insurance policies and claims.
Contact Information
Shipping International contact details are available on their website.
