SOME HANDS ON EXPERIENCE AND RECOMMENDATIONS FOR OFFSHORE CAGES - PowerPoint PPT Presentation

SOME HANDS ON EXPERIENCE AND RECOMMENDATIONS FOR OFFSHORE CAGES Elihai Radzinski Director Fibras industriales S.A.

SUPPLYING THE FISHING AND AQUACULTURE INDUSTRIES FOR OVER 70 YEARS PRODUCTION CAPACITY ABOVE 6,000 TONS PER YEAR

KNOTTED NETTING RASCHEL KNOTLESS NETTING TWISTED KNOTLESS NETTING BRAIDED NETTING ROPES TWINE

POLYMAX ROPES POLYETHYLENE WRAPPED IN MULTIFILAMENT POLYESTER

POLYTAR ROPE BEST FOR ABRASION RESISTANCE

ABRASION TESTING ACCELERATED SOLAR U.V. EFFECT

EACH RAW MATERIAL HAS ITS ADVANTAGES AND DISADVANTAGES NYLON – POLYESTER – PP – POLYETHYLENE – HPPE (DYNEEMA/SPECTRA) • BREAKING LOAD V. ELONGATION – WORKING LOAD • ABRASION RESISTANCE – WHAT DOES A GOOD BREAKING LOAD OR EVEN GOOD WORKING LOAD HELP IF THERE IS LOW ABRASSION RESISTANCE? • RESISTANCE TO U.V. – DO WE WANT ORIGINAL WORKING LOAD OR, REAL WORKING LOAD AFTER AN EXTENDED PERIOD OF EXPOSURE TO THE SUN • DENSITY – SINKS OR FLOATS? • WATER ABSORPTION – WHAT IS REAL OPERATIVE DENSITY? • WHAT IS THE MEMORY OF THE FIBER? – CAN IT HOLD A KNOT? • MONOFILAMENT OR MULTIFILAMENT – HOW BAD IS THE FOULING PROBLEM?

PROTECTIVE COATING FOR NETTING

BIRD NETS – TWISTED KNOTLESS MONOFILAMENT POLYETHYLENE

ANTI PREDATOR BRAIDED NETTING • BRAIDED NYLON • BRAIDED POLYESTER • BRAIDED MONOFILAMENT POLYETHYLENE NETTING

CAGE STRUCTURAL DESIGN – COLUMNS 18.0 m. .5 1.0m. .5 OREJA CON 210/96 x MANGUERA 2" 6.0 m. 5.0 CABO EE DE 3/4" 7.5 m 5.65 m CABO EE DE 1/2" TOTAL WEIGHT – APPROXIMATELY 225Kg.

18.0 m. .5 1.0m. .5 OREJA CON 210/96 x MANGUERA 2" 6.0 m. 5.0 CABO EE DE 3/4" 7.5 m 2.83 m CABO EE DE 1/2" TOTAL WEIGHT – APPROXIMATELY 229Kg.

FINAL TIPS • DON’T SAVE A FEW CENTS ON TWINE – CAN COST YOU MUCH MORE ON FISH • ALWAYS WASH YOUR CAGES WITH FRESH WATER THE MINUTE THEY GET OUT OF THE SEA • ALWAYS COVER YOUR NETS WHEN IN STORAGE REMEMEBER - SALT AND SUN ARE OUR BIGGEST ENEMIES

AND THIS IS HOW WE ASSEMBLE YOUR NETS AND CAGES