CHOOSING THE CORRECT ANCHOR LINE

Advice on how to select the correct anchor line and chain rode for your boat.

Whitsunday Discount Marine recommends 3 strand nylon rope for anchor line due to its stretch and strength. Silver or polypropylene rope is not recommended.

 

Nylon 3 Strand:

3mm of rope diameter per 2.75 metres (9 feet) of boat length

Polyester 3 strand:

4mm of rope diameter per 2.75 metres (9 feet) of boat length

Silver 3 strand:

5mm of rope diameter per 2.75 metres (9 feet) of boat length

 

Chain length = boat length (preferable)

Chain diameter:

8mm anchor line:            6mm

10mm anchor line:          8mm

12mm anchor line:          8mm

16mm anchor line:        10mm

 

COMPARISON OF BREAKING AND WORKING LOADS OF ROPES

  Braided &      3 Strand Dyneema Core Nylon Polyester Polypropylene (Silver)
Rope Size
Breaking Load
Kg
Working Load
Kg
Breaking Load
Kg
Working Load
Kg
Breaking Load
Kg
Working Load
Kg
Breaking Load
Kg
Working Load
Kg
8mm 2,200 610 1,215 338 918 255 630 175
10mm 3,400 950 1,872 520 1,431 398 981 273
12mm 7,200 2,000 2,700 750 2,043 568 1,386 385
14mm     3,690 1,025 2,862 795 1,881 523
16mm     4,770 1,325 3,690 1,025 2,520 700
18mm     6,030 1,675 4,635 1,288 3,150 875
20mm     7,470 2,075 5,760 1,600 3,870 1,075