Two cables can be set on beam that lead to a chain and behind it is the net that the fish would get in. The wire stirs the sea bed and also the sound disturbs the fish and sends them into the net. With time passing on has been proved that there are disadvantages in maintenance and if the cable is heavy it wears out and in solution it breaks down.
Within 300 m from the shore the depth foes to around 18 m so it is a decision of how long the cables should be. According to the depth morphology which is rocky the choice tends to be less than 18 m so as to fish in the mid waters with a range of depth 5m to 10 m or in the surface waters at 3 m depth.