Welcome to SBO.
Nice boat to own for a novice. There is a lot to learn.
Rigging lines can be what ever you want (within some limits). If a previous owner changed the blocks after it was built, the "documentation" could be all in error.
Material
Lines like halyards will serve you better if they are low stretch. That said if price is an issue (and low stretch tends to be more expensive) then get what you can afford and be ready to adjust the line as it stretches under use. It will get you out sailing. Lean to the Dacron/Polyester lines. Double braid they have minimum (5%) stretch. You may want to spend the extra to get a line with core fibers that have no stretch. You will secure/fix in place these lines most of the time. No stretch or minimal works. They must be sized diameter to fit inside the sheaves in the mast. You can go to the top and check the fit, you can take the mast down and measure the size of the sheaves, or you can try pulling the current lines to see if they work freely raising and lowering a sail. That will give you a clue.
Sheets are active working control lines. Some give in them supports the strain and pressures involved with sails catching the wind. Dacron/Polyester double braid works here as well. You will be frequently adjusting these lines. I want these lines to have a good hand feel. They must be sized to fit inside the blocks and equipment on your boat.
There are some rough estimates for all lines.
Here is an interesting site.
Question: Do you have guidelines for selecting halyards, sheets, etc. for my sailboat? From the Rigger: First, if your old rope served its purpose but needs replacing, we recommend duplicating it as closely as possible Read more…
rigworks.com
