Securing Shipping Containers in Bad Weather: Preventing Falls During Rough Seas
Shipping is a critical component of global trade, transporting goods across vast distances. However, during rough weather conditions, the risk of shipping containers falling off ships increases significantly. This happens quite often, according to Lloyd's of London, but is rarely reported due to the comprehensive nature of coverage that Lloyd's provides for all ships and cargoes at sea.
Why Shipping Containers Fall Off Ships
For the protection of both the cargo and the vessel itself, it's imperative that containers are securely fastened to the ship's deck. This is not only a shipping company's responsibility but also a requirement by maritime regulations. Without proper securing, the risk of containers being lost to the sea is high, especially in adverse weather conditions.
Methods of Container Securing
Containers are typically secured in place using a combination of lashing and securing systems. Lashings involve ropes or chains that are used to secure the containers to the ship's deck, while container securing systems are designed to keep the containers in place during rough seas. These systems are crucial for maintaining the safety and integrity of the cargo during transit.
Another key requirement is the use of twistlocks in all four corners of the containers. These are 'weird bolt-like things that go through the holes in the corners.' Each corner is secured by a twistlock and there are additional bracing rods linking a stack to the deck. When secured properly, these systems ensure that containers stay in place even in the roughest of seas.
Resilient Ship Design
Modern ships are designed with strong structures to handle the rigors of the ocean. They are built to withstand rough seas and minimize the risk of containers falling off. The ship's design ensures that even if a lashing or twistlock comes loose, the stack of containers will not easily disintegrate.
While these systems are highly effective, they are not infallible. If a significant blow occurs, such as a powerful wave, containers can still be lost. However, the probability of this happening is greatly reduced due to the numerous layers of security in place.
The Hazards of Loose Containers
Even when containers are lost, they remain afloat and pose a significant risk to other vessels. They can collide with other ships, disrupting navigation and potentially causing damage to both the lost container and the other vessel. This is why it's critical to ensure that every measure is taken to secure containers during transit.
Photo from gCaptain shows a ship with securing ropes and twistlocks in place, highlighting how these systems work together to keep containers secure. While they are quite secure, they can still come loose in extreme conditions.
In conclusion, the safety and security of shipping containers in bad weather is of utmost importance. Through the use of lashing, twistlocks, and secure stacking, companies can significantly reduce the risk of containers falling off ships. Compliance with maritime regulations ensures that cargo is transported safely and efficiently, even in the most challenging of conditions.