Engineering tools

Rope selector

Tell it the load case and it ranks the catalogue against it — showing why each rope scored where it did, and why the excluded ones were excluded.

Working load

Design factor

→ needs 25,000 lb MBS

Maximum diameter — 2"

Application

Environment

Prolonged UVOutdoors, months to yearsWet / immersedSalt or fresh waterAbove 60 °CHot work, engine spacesAbrasive contactEdges, drums, fairleadsLoad held for monthsCreep becomes the failure mode

Requirements

Minimum elongationMust float

9 of 12 constructions meet this specification

1
Apex-12
12-Strand Single Braid · HMPE
7/16"
26,400 lb MBS
- 7/16" carries it with 1.1× headroom
- Spliceable to 100%
2
Vector-PC
Parallel Core · HMPE
1/2"
30,000 lb MBS
- 1/2" carries it with 1.2× headroom
- Spliceable to 85%
3
Meridian-DB
Double Braid · Polyester
7/8"
25,500 lb MBS
- 7/8" carries it with 1.0× headroom
- Spliceable to 90%
4
Meridian Hybrid
Double Braid · Hybrid
5/8"
37,500 lb MBS
- 5/8" carries it with 1.5× headroom
- Spliceable to 90%
5
Surge-8
8-Strand Plaited · Nylon
1"
25,000 lb MBS
- 1" carries it with 1.0× headroom
- Spliceable to 100%
6
Harbour-3
3-Strand Twisted · Nylon
1"
25,000 lb MBS
- 1" carries it with 1.0× headroom
- Spliceable to 95%
7
Thermion-AR
12-Strand Single Braid · Aramid
5/8"
37,000 lb MBS
- 5/8" carries it with 1.5× headroom
- Spliceable to 95%
8
Datum-LCP
Parallel Core · LCP
1/2"
27,500 lb MBS
- 1/2" carries it with 1.1× headroom
- Spliceable to 85%
9
Apex-12 MAX
12-Strand Single Braid · HMPE
3/4"
78,000 lb MBS
- 3/4" is the smallest qualifying size
- Spliceable to 100%

3 excluded — and why

Canopy-24Polyester
- Strongest size (9/16") reaches 9,800 lb — short of the 25,000 lb required
Drift-PPPolypropylene
- Strongest size (1-1/4") reaches 21,000 lb — short of the 25,000 lb required
Ascent NFPA-GPolyester
- Strongest size (9/16") reaches 12,600 lb — short of the 25,000 lb required