In offshore logistics, safety and compliance are priorities. Marine baskets certified under DNV 2.7-1 are essential for the safe lifting and transportation of equipment, tools and supplies in demanding environments such as oil rigs, FPSOs and support vessels.
These units, known as CCUs (Cargo Carrying Units), are designed to withstand extreme conditions and ensure structural integrity throughout the operation. Here are five key recommendations for choosing the right basket based on the type of cargo and the needs of your project:
1. Verify DNV 2.7-1 certification
Every marine basket must have a current certificate in accordance with DNV 2.7-1, which establishes the design, manufacturing, testing and marking requirements for CCUs used in offshore lifting.
The bucket must carry a nameplate indicating the serial number, manufacturer, maximum payload, tare weight and maximum gross weight (MGW). Using uncertified units represents an operational, legal and financial risk.
2. Define the required payload and internal dimensions
Select a basket that fits the net weight of the load (payload), without exceeding the specified structural capacity.
Also consider the available internal volume and usable dimensions, to ensure that equipment, tools or materials enter safely, without generating excessive voids that may affect stability during lifting.
Avoid overloads: a CCU operated outside its specification compromises its integrity and may invalidate its certification.
3. Evaluates structural quality and materials
DNV CCUs should be fabricated from high-strength structural steel with anti-corrosion coatings suitable for saline environments.
Inspect the following key elements:
- Welded and verified lifting points (lifting points).
- Structural reinforcement at corners and base
- Welding quality and finish
- Drainage system to avoid accumulation of liquids
- Elements that prevent deformation due to impact or cyclic loading
The structure must withstand open sea conditions, including sudden movements, vibrations and continuous corrosion.
4. Consider additional safety equipment
A well-designed DNV basket not only meets the minimum requirements, but incorporates improvements that optimize operation and safety:
- Non-slip floors
- Hinged doors with secure locking system
- Internal anchorage points for load securing
- Covers or lids to protect sensitive contents
- Safe access for manual loading and unloading, if applicable
These features make the difference when transporting liquids, delicate materials or irregular loads.
5. Work with a supplier specialized in ccu’s equipment rental
Having a supplier specialized in offshore certified equipment is vital. Not all manufacturers meet the required standards, and in many cases, technical advice is what allows you to make a better decision.
At Cargoweld, we provide DNV 2.7-1 marine baskets ready to operate, with full documentary traceability, load testing, fabrication drawings and customization options for unconventional loads.
Frequently asked questions
What is a DNV basket for?
For the safe transport and lifting of equipment, tools, parts or containers on platforms, vessels or offshore structures, under adverse weather conditions.
What is the difference between a DNV basket and a standard container?
The DNV basket is designed to be lifted, stacked and exposed to marine conditions. A standard container is not certified or structurally strong enough for offshore use.
How often should DNV baskets be inspected?
- Visually: before each use
- Formal certification: every 6 to 12 months, depending on the use and internal regulations of the operator.
Want to learn about our DNV marine basket line or need a specialized solution?
Contact us and get technical advice for your next offshore operation.
