Rope diameter

[kenhick]

What would be the diameter of a anchor line to hold a 10 ton yacht I need to order 200 meters thanks

 

[Tranona]

Typical size for that displacement boat would be 10mm chain and 16mm rope - although not sure why one would need 200m! 8mm chain and 12 or 14mm rope would be actually strong enough but at that displacement there is a tendency to go up a size. Much depends on the anchor you have (the rode needs to be stronger than the maximum holding power of the anchor when fully set) and the conditions in which you plan to anchor.

 

[Moodysailor]

Anchor Chain and Rope Size Guide - Jimmy Green Marine

 

[vyv_cox]

The displacement of the boat does not make a huge contribution to warp loading, it is far more dependent upon the area exposed to wind and waves. Guessing that the boat is about 37 ft in length, the rode loading in a big wind is given by ABYC as 1000 kg, although many authorities dispute this and quote around half that figure.

You may well find that rope of that strength is too thin to haul comfortably, in which case it makes sense to go up a size or two.

 

[Jonny A]

The displacement of the boat does not make a huge contribution to warp loading, it is far more dependent upon the area exposed to wind and waves. Guessing that the boat is about 37 ft in length, the rode loading in a big wind is given by ABYC as 1000 kg, although many authorities dispute this and quote around half that figure.

You may well find that rope of that strength is too thin to haul comfortably, in which case it makes sense to go up a size or two.

Surely it would make a big difference if the boat moves around and starts jerking at the lines?

 

[AndrewB]

Surely it would make a big difference if the boat moves around and starts jerking at the lines?

Use three-ply or better still multiplait rope which is stretchy and easily absorbs shock loads. That's why many people who anchor on chain will hook a short rope strop at the top end to take the load.

 

[ChromeDome]

Def. more about the type and capacity of the rope than the diameter. To me the flex is crucial for comfort (boat's and crew's) and load on fixings.

Been quite happy with Liros Handy Elastic and Gleistein - Dock Flex.

 

[kenhick]

Took everything in. Jimmy greens site was excellent but the confort was the thing that swong it for me going 19mm thanks for the help