custom rope maker

Rope Strength Guide


The Best Custom Boat Lines, Custom Colored Ropes, & Special Assemblies made to Your Specifications

NYLON DOUBLE BRAID
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 1,700 340
3/8" 10 4,100 820
1/2" 13 7,300 1,460
5/8" 16 14,600 2,920
3/4" 19 19,000 3,800
7/8" 22 28,100 5,620
1-0" 25 33,200 6,640
1-1/4" 32 52,000 10,400
1-1/2" 38 74,000 14,800
1-5/8" 41 92,100 18,420
1-3/4" 45 109,500 21,900
2-0" 51 129,700 25,940
2-1/4" 57 179,400 35,880
2-1/2" 64 196,000 39,200
2-5/8" 67 221,000 44,200
2-3/4" 70 237,000 47,400
3-0" 76 274,000 54,800
3-1/4" 83 339,000 67,800
3-5/8" 92 400,000 80,000
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
POLYESTER DOUBLE BRAID
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 2,000 400
3/8" 10 4,400 880
1/2" 13 8,200 1,640
5/8" 16 14,000 2,800
3/4" 19 20,000 4,000
7/8" 22 29,900 5,980
1-0" 25 38,000 7,600
1-1/4" 32 54,500 10,900
1-1/2" 38 72,000 14,400
1-5/8" 41 77,800 15,560
1-3/4" 45 89,200 17,840
2-0" 51 110,000 22,000
2-1/4" 57 141,000 28,200
2-1/2" 64 170,000 34,000
2-5/8" 67 186,000 37,200
2-3/4" 70 206,000 41,200
3-0" 76 237,000 47,400
3-1/4" 83 292,000 58,400
3-5/8" 92 348,000 69,600
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



NYLON 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 1,650 330
3/8" 10 3,700 740
1/2" 13 6,400 1,280
5/8" 16 10,400 2,080
3/4" 19 13,800 2,760
7/8" 22 20,000 4,000
1-0" 25 25,000 5,000
1-1/4" 32 37,500 7,500
1-1/2" 38 53,000 10,600
2-0" 51 90,000 18,000
2-1/2" 64 125,000 25,000
3-0" 76 195,000 39,000
4-0" 102 360,000 72,000
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
POLYESTER 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 1,650 825
3/8" 9 3,700 1,850
1/2" 13 6,400 3,200
5/8" 16 10,000 5,000
3/4" 19 12,500 6,250
7/8" 22 18,000 9,000
1-0" 25 22,000 11,000
1-1/4" 32 33,200 16,600
1-1/2" 38 46,800 23,400
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



POLYPROPYLENE 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 1,250 213
3/8" 10 2,700 459
1/2" 13 4,200 714
5/8" 16 6,200 1,054
3/4" 19 8,500 1,445
7/8" 22 11,500 1,955
1-0" 25 14,000 2,380
1-1/4" 32 21,000 3,570
1-1/2" 38 29,700 5,049
1-5/8" 41 36,000 6,120
1-3/4" 45 43,000 7,310
2-0" 51 52,000 8,840
2-1/4" 57 69,000 11,730
2-1/2" 64 80,000 13,600
3-0" 76 114,000 19,380
3-1/4" 83 137,000 23,290
3-1/2" 89 162,000 27,540
4-0" 102 190,000 32,300
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
MANILA 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 540 92
3/8" 10 1,215 207
1/2" 13 2,385 405
5/8" 16 3,960 673
3/4" 19 4,860 826
7/8" 22 6,930 1,178
1-0" 25 8,100 1,377
1-1/4" 32 12,150 2,066
1-1/2" 38 16,550 2,814
1-5/8" 41 20,250 3,443
1-3/4" 45 23,850 4,055
2-0" 51 27,900 4,743
2-1/4" 57 36,900 6,273
2-1/2" 64 41,850 7,115
3-0" 76 57,600 9,792
3-1/4" 83 69,300 11,781
3-1/2" 89 81,900 13,923
4-0" 102 94,500 16,065
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



NYLON 12-STRAND PLAIT
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 2,000 400
3/8" 10 4,600 920
1/2" 13 8,000 1,600
5/8" 16 13,900 2,780
3/4" 19 17,900 3,580
7/8" 22 26,200 5,240
1-0" 25 30,100 6,020
1-1/4" 32 45,400 9,080
1-1/2" 38 64,800 12,960
1-5/8" 41 74,000 14,800
1-3/4" 45 92,100 18,420
2-0" 51 106,000 21,200
2-1/4" 57 152,000 30,400
2-1/2" 64 170,000 34,000
2-5/8" 67 189,000 37,800
2-3/4" 70 214,000 42,800
3-0" 76 245,000 49,000
3-1/4" 83 288,000 57,600
3-5/8" 92 338,000 67,600
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
POLYESTER 12-STRAND PLAIT
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/4" 6 2,100 420
3/8" 10 4,600 920
1/2" 13 8,000 1,600
5/8" 16 12,100 2,420
3/4" 19 15,800 3,160
7/8" 22 24,200 4,840
1-0" 25 27,500 5,500
1-1/4" 32 42,100 8,420
1-1/2" 38 59,600 11,920
1-5/8" 41 72,200 14,440
1-3/4" 45 84,400 16,880
2-0" 51 101,000 20,200
2-1/4" 57 137,000 27,400
2-1/2" 64 163,000 32,600
2-5/8" 67 179,000 35,800
2-3/4" 70 202,000 40,400
3-0" 76 233,000 46,600
3-1/4" 83 282,000 56,400
3-5/8" 92 340,000 68,000
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



AmSteel®Blue / Dyneema® 12-Strand
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/8" 3 2,300 460
3/16" 5 4,900 980
1/4" 6 7,700 1,540
5/16" 8 12,300 2,460
3/8" 10 17,600 3,520
7/16" 11 21,500 4,300
1/2" 13 30,600 6,120
9/16" 14 36,500 7,300
5/8" 16 47,500 9,500
3/4" 19 58,000 11,600
7/8" 22 81,700 16,340
1-0" 25 98,100 19,620
1-1/8" 30 133,000 26,600
1-1/4" 32 149,000 29,800
1-1/2" 38 205,000 41,000
1-5/8" 41 255,000 51,000
1-3/4" 45 302,000 60,400
2-0" 51 343,000 68,600
2-1/4" 57 484,000 96,800
2-1/2" 64 529,000 105,800
2-5/8" 67 595,000 119,000
2-3/4" 70 735,000 147,000
3-0" 76 749,000 149,800
3-1/4" 83 1,007,000 201,400
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
IRON LITE® / DYNEEMA® 12--STRAND
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/8" 3 3,000 600
3/16" 5 5,800 1,160
1/4" 6 8,000 1,600
5/16" 8 12,400 2,480
3/8" 10 19,700 3,940
7/16" 11 22,000 4,400
1/2" 13 34,400 6,880
9/16" 14 36,500 7,300
5/8" 16 48,200 9,640
3/4" 19 65,600 13,120
7/8" 22 103,840 20,768
1-0" 25 123,200 24,640
1-1/8" 30 163,900 32,780
1-1/4" 32 184,400 36,880
1-1/2" 38 247,500 49,500
1-5/8" 41 323,400 64,680
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



SUPERDAN (MAXIMA) 8-STRAND
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
2-0" 51 67,200 13,440
2-1/4" 57 78,000 15,600
2-1/2" 64 91,500 18,300
2-5/8" 67 103,500 20,700
3-0" 76 135,000 27,000
3-1/4" 83 171,000 34,200
4-0" 102 243,000 48,600
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
MAXIFLEX 8-STRAND
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
- -
2-1/4" 57 138,000 27,600
- -
2-5/8" 67 182,000 36,400
3-0" 76 224,900 44,980
3-1/4" 83 276,700 55,340
- -
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



POLY-DAC 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
3/8" 10 2,700 459
1/2" 13 4,400 748
5/8" 16 6,100 1,037
3/4" 19 8,400 1,428
7/8" 22 11,125 1,891
1-0" 25 13,175 2,240
1-1/2" 38 28,250 4,803
2-0" 51 48,050 8,169
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
WINDLASS - NYLON 3-STRAND TWISTED
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/2" 13 6,400 1,280
9/16" 14 7,900 1,580
5/8" 16 10,400 2,080
3/4" 19 13,800 2,760
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



POLYPROPYLENE 8-STRAND HOLLOW BRAID
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/8", #4 3 150 26
3/16", #6 5 475 81
1/4", #8 6 900 153
5/16", #10 8 1,200 204
3/8", #12 10 1,600 272
1/2", #16 13 2,000 340
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
WINDLASS - NYLON 8-PLAIT
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
3/8" 9 4,000 1,000
1/2" 12 8,300 2,075
5/8" 16 9,200 2,300
3/4" 18 12,200 3,050
7/8" 22 17,000 4,250
1-0" 24 24,840 6,210
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.



NYLON SOLID BRAID
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/8", #4 4 575 115
3/16", #6 5 825 165
1/4", #8 6 1,325 265
5/16", #10 8 1,925 385
3/8", #12 9 2,800 560
1/2", #16 12 4,200 840
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.
POLYESTER SOLID BRAID
Diameter Diameter Tensile Strength Working Load
inches mm pounds pounds
1/8", #4 4 355 71
3/16", #6 5 626 125
1/4", #8 6 1,000 200
5/16", #10 8 1,600 320
3/8", #12 9 2,300 460
1/2", #16 12 3,000 600
These figures are for brand new rope. Age, wear, sunlight exposure, splices, and knots will further reduce these figures over time.





tow lines custom rope For customer service and inquiries please call John 303-809-7274 or email john@denverrope.com
www.denverrope.com