Towing cages are designed to transfer the fishes in safe from fishing are to cage stored area. Those cages can be produced starting from 50 meters in diameter to any dimension with one floating pipe. The Tuna fishes can be transferred hundreds of miles alive from the catch area to storage area. The cages have a strong configuration to resist to all adverse weather condition during towing period. We can construct cages at 6 different places at the sametime. We use first quality HDPE pipe from 200mm. to 500mm. in diameter and diameter of cages are from 10 m. to 70 meters.