Jim - Your chain DOES NOT
have a SWL of 1600kg, it is only 800kg. The 1600kg is it's Proof Load which is twice it's SWL. It is a Grade L or what was called a Grade 30. It is important you don't confuse the 2 loads.
It works like this -
Break load is XX
Proof Load is 1/2 XX and the actual load that is applied in the factory during the testing process.
SWL or WLL is 1/4 XX or 1/2 of Proof load.
There is the odd exception to that, US 'Hi-test' being the more common in anchor
chains but generally outside of the US everyone else uses the above.
The match for almost every single winch
that runs a 8mm chain is a 14mm rope. Going to 12mm may very well just slip under load. It all depends on which winch
as to which rope is best to use. All will run 3 strand but not all will run a Octiplait.
Generally (and I mean generally as there is some quirks)
Verticals - Maxwell
runs everything as does Lofrans
and Quick. Lewmar
say they can run octiplait but it is well known often they just don't work. Anchorlift = 3 strand only as is Muir. The guys with 3 strand only winches are working ahrd to get both but as yet they are not proven.
Horizontals - generally 3 strand only.
If you can give me a manufacturer and modal I'll suss my database for you.
NOTE: many winch manufactures publish numbers which just don't work well and some are just complete crap. This is an issue I've bitched to most of them but many just don't seem to care.
Octiplait is good for stowage but equally some 3 strands are as well. It all depends on the rope quality. Just like anything there is good and bad ropes. A bad octiplait will give greif as will a bad 3 strand. It is highly recommended you buy a top end quality rope made in Japan
, the EU or the US. While there is some dodgy stuff there they are generally massively superior than those from elsewhere. You will note I said 'made in'.
For example a Samsom Pro-Set 3 strand performs very very similar to a quality ocitplait and even when talking stowage.
Spend the time and the money
to get a rope made from Type 66 nylon fibre. That has far higher thermal stability than most ropes on the general market, it is also the grade used in car airbags.
Most commonly sold ropes are only T6 grade or some cheapies only Textured nylon, textured is reject from making the clothing
industry and shouldn't be in the marine
industry at all. The biggest difference it the Thermal Stability. You've seen those hard wire like nylon ropes? That happens with age and in relation to their thermal stability. Higher the thermal stability the long it takes for the rope to go bad on you or more specifically your winch. Auto Rope to Chain winches just don't like hard stiff ropes and you have probably noticed stowage isn't flash either.
And while it may hurt the wallet a bit, think of it this way -
You buy a rope for $1 a mt and it lasts 2 years and gives some grief. being a bit generous here, we've seen some of these stop working in as quick as 4 months.
You buy a rope for $3 a mt and it lasts 10+ years and usually doesn't give greif.
Which is the better deal??
I know your wallet maybe twitching about now but let me assure you this is not theory, it is well proven over many many years. I make on average 15 rope to chain rodes a day and have done since the first recreational Rope to Chain winch came out 15 years ago (there abouts), which just as a FYI was by Maxwell
. Hence all of the above is very very much a 'been there, done and seen it all' based post.
What's the winch?