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.

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

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

• 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?

NYLON – POLYESTER – PP – POLYETHYLENE – HPPE (DYNEEMA/SPECTRA)

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.

6.0 m. 1.0m.

210/96 x 2"

7.5 m

OREJA CON MANGUERA

5.0

5.65 m

CABO EE DE 3/4" CABO EE DE 1/2"

.5 .5

TOTAL WEIGHT – APPROXIMATELY 225Kg.

CABO EE DE 3/4" CABO EE DE 1/2"

2.83 m

5.0

210/96 x 2" OREJA CON MANGUERA

7.5 m

18.0 m.

6.0 m. 1.0m.

.5 .5

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