Do's and Don'ts for Cargo Lashing on a Ship

When you're transporting cargo over long distances, the sea route is often the best option. It may not be as fast as transporting by air but it is more efficiently. That said, it works only if all your cargo reaches the final destination. This is where cargo lashing becomes important. As the ship glides over the waves, it moves in every direction possible and if the cargo isn't lashed correctly, there's a big risk it can go overboard. So, here are a few do's and don 'ts to keep in mind.
DO ensure that all containers are damage-free
Before you start lashing the containers, you must check each to ensure that there is no visible damage. Reject any container that appears twisted or buckled. Pay special attention to the corners for signs of wear and tear to the twistlock and securing points. This becomes Even more important when automatic twistlocksare being used. Also check the containers for signs that they may allow water leakage. You also need to ensure that the containers meet the length and width standards.
DON'T tighten the lashing rods too much
If it's not tight enough, the lashing does not serve its purpose and your cargo will not be safe enroute. At the same time, if you overtighten the lashing rods, there's a risk the crossed lashings may be not equally tight on the heeled side. This can lead to the containers tipping over when the ship rolls. It is important to note that lashing rods often get over tightened when a very long bar is used to tighten the turnbuckle .
DO inspect all the lashing material
Just as you inspect containers for damage, you must also inspect all the lashing material for damage and conformity to safety regulations. Discard any components that appear damaged or show signs of wear and tear. Also inspect all ring bolts, D rings, cell guides and If you need to buy components, make sure they are supported by test certificates and keep a copy of these certificates onboard.
DON'T load heavier container on top of lighter ones
New ship designs allow up to 9 containers to be stacked on top of each other. The size and the weight of the containers are equally important when deciding on an order for the stack. Arrange them such that the largest and heaviest containers are at the bottom Do not stack'high cube' containers in the outboard positions. Reject any containers that are found to be overweight or that may cause the stack limit to be exceeded.
Last but not the least, It's important to pay attention to all details and follow common sense rules such as not walking under suspended containers and keeping all lashing material stowed carefully to avoid tripping over it.