When loading the containers, put the semi-auto twistlocks in the bottom corner fittings of the containers at quay, the twistlocks will be locked automatically by putting on the other containers.
The NA-3J twistlock is locked with the handle in the horizontal position.
When unloading the containers, unlock the twistlocks by using the bar and remove the semi-auto twistlocks from the containers at quay.
When loading the containers, put the semi-auto twistlocks in the bottom corner fittings of the containers at quay, the twistlocks will be locked automatically by putting on the other containers.
The NA-3J twistlock is locked with the handle in the horizontal position.
When unloading the containers, unlock the twistlocks by using the bar and remove the semi-auto twistlocks from the containers at quay.