Martin 242 Line Lengths

 Some common metric conversions for line diameters: 1/8" ~ 3mm; 3/16" ~ 5mm; 1/4" ~ 6mm; 3/8" ~ 9 or 10 mm; 1/2" ~ 12 or 13mm

  • Spinnaker Halyard: 1/4" x 75 ft.
  • Reef: 1/4" x 25 ft.
  • Pole Down: 1/4" x 30 ft.
  • Pole Up: 1/4" x 45 ft.
  • Vang: 1/4" x 22 ft.
  • Backstay purchase: 1/4" x 17 ft. N.B. This is the purchase line between blocks, not the actual backstay.
  • Backstay line or wire: distance from mast crane to top centre of pushpit is 34’4”. Wire backstay length should be 33’6”, plus 3” either end for crimping length. Rope backstay length can be 33’ or 33’6” plus 6” either end for tying knots. Rope can be 3/16” or 1/4” Amsteel or similar.
  • Traveller: 1/4" x 12 ft. Qty = 2
  • Cunningham: 1/4" x 18 ft.
  • Cunningham strap: 1/4" x 5 ft.
  • Spinnaker Sheets: 2 @ 5/16" x 60 ft. (8 mm x 18.3 M) tapered for the last 12 feet
  • Jib Sheets:
    • 1:1 system 1 @ 3/8" x 45 ft. 
    • 2:1 system 2 @ 3/8" x 30 ft. (9mm) tapered for the last 30" (762mm) down to a 6mm Dyneema core with a braided loop at the end to attach a Wichard clip.
  • Jib Halyard: 3/16" x 27 ft.
  • Jib Messenger (Halyard tracer) line: 1/8" x 27ft
  • Main Sheet: 3/8" x 65 ft.
  • Main Halyard: 3/8" x 78 ft.
  • Furling Line (small harken drum): 3/16" x 25 ft. (the first 10' to coil into the drum may be tapered)
  • Furling Line (large Harken drum): 1/4" x 25 ft. (again the 10 ' of line coiling into the drum can be tapered)