It is always necessary to restrain the cargo for one or more of the following reasons :-
----- To prevent collapse the stow while packing , unpacking or during transit
----- To stop any movement during transit of pat loads or of single heavy items , the heavier the item the more damage it will do if allowed to move .
----- To prevent the face of the stow collapsing and learning against the container doors to fall out when the doors are opened at the final destination or for customs inspection .
Methods of Securing Cargo :-
The more common methods of securing cargo are ;
Shoring :- bars , struts and spars located in the cargo voids to keep the cargo press against the walls or other cargo .
Lashing :- ropes , wires , chains , strapping or netting secure to proper anchoring points and tensioned against the cargo .
Wedging :- Wooden distance pieces , pads of synthetic materials , inflatable dunnage to fill voids in the cargo and keep in immobile against the container walls .
Locking :- Cargo built up to give a three dimensional brick well effect .