2 3


4 5


GENERAL RECOMMENDATIONS Stowage planning errors


- Heavy containers stowed on top of lighter ones. - Exceeding stack height limits, particularly with high-cube containers.


- Exceeding stack weight limits. Securing failures


- Non-compliance with the Cargo Securing Manual (CSM).


- Ineffective lashing management during the voyage.


- Failures of fixed and portable securing equipment (ISO sockets, lashing pad eyes, twistlocks, lashing rods).


Voyage factors


- Parametric rolling, an unstable phenomenon that can quickly generate large roll angles coupled with significant pitch and yaw motions.


- Synchronous rolling, which occurs when large rolling motions may be induced because the natural rolling period of a ship coincides with the encounter wave period.


- Poor voyage planning. - Adverse weather conditions.


Mechanical failures


- Machinery or propulsion failures leaving the vessel adrift and exposed to heavy seas.


- Consequential excessive rolling beyond safe limits, putting extreme loads on container stacks and lashing equipment.


- All the above could result in the collapse of container stacks with loss of containers including container carrying plastic pellets potentially resulting in marine environmental damage.


- Carriers and shippers should be aware that failure to comply with best practices and emerging regulations may result not only in environmental harm but also in significant financial exposure and reputational risk.


- The Club recommends operators consider the following measures to mitigate the loss of containers at sea, which could result in significant damage to the marine environment from plastic pellet spillage.


SHORE-BASED TRAINING AND AWARENESS


- Ensure that all shore-based personnel involved in packing, stowage planning and loading plastic pellets containers are fully aware of the environmental risks associated with pellet spillage and understand the procedures required to prevent spillage.


- Proper training and clear instructions should be provided so that everyone involved in the shipment knows their responsibilities and can take the necessary measures to minimize the likelihood of incidents.


- Operator expectations in regard to the packaging, loading and securing of cargo within containers should, where possible, be brought to the attention of relevant parties, including shippers and suppliers.


PACKAGING AND CONTAINMENT


- The packaging utilized for plastic pellets should be “strong enough” to withstand the shocks and loads normally encountered during shipping of containers and should ideally maintain its integrity in the event of these packages floating free from lost containers.


THE REPORT | MAR 2026 | ISSUE 115 | 119


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