Help with determining the proper length and width and weight of the main, jib sheets

[Scintillating]

Hi

I am considering purchasing a used sailboat and the sheets are not included and not available for using as a template for the proper weight, lenghth, thickness, girth required for a 19' O'Day Mariner- could someone advise for mainsail, jib, main halyard, jib halyard, etc. also could you advise thickness and lentgth for centerboard leaded drop keel which can be pulled up via a wrench.
Thanks
Scintillating

[Charlie]

general rule for jib sheets is 1.5x the loa. That would be 30' on your boat. As for thickness I would go with 5/16 or 3/8 not b/c of strength but because of comfort on your hands. halyards are specific to each boat. get some cheap cordage and run it up the halyard and place it where it needs to be. Taht is the easiest way. Make sure there is enough tail on the jib halyard to bring the halyard to the bow of the boat. On the main Halyard make sure you can clip the halyard to the rail of the boat. For main sheet you need to know how much purchase and where you sheet from mid boom or end of boom. For all of these on a boat of your size I would think that cheap cordage and mearsurements would be the easiest thing to do.

[GordMay]

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