Jeff,
The
J/30 Class Rules were changed in 2004 to remove the wire requirement for lifelines. If you use stainless steel wire, they are required to be uncoated. The reference that the class rules use is the
ISAF Offshore Special Regulations - Category 4 for monohulls. Specifically in the 2012 edition extract for Category 4
Language & Abbreviations UsedMo - Monohull
Mu - Multihull
" ** " means the item applies to all types of yacht in all categories except 5 for which see Appendix J or 6 for which see Appendix L.
RED TYPE indicates a significant changes in 2012
Guidance notes and recommendations are in italics3.14.6 Lifeline Minimum Diameters, Required Materials, Specificationsa) Lifelines shall be of : **
- stranded stainless steel wire or
- Single-braided High Modulus Polyethylene (HMPE) (Dyneema®/Spectra® or
equivalent) rope
b) The minimum diameter is specified in table 8 below. **
c) Stainless steel lifelines shall be uncoated and used without close-fitting sleeving, **
however, temporary sleeving may be fitted provided it is regularly removed for inspection.
d) When stainless wire is used, Grade 316 is recommended. **e) When HMPE (Dyneema®/Spectra®) is used, it shall be spliced in accordance with the manufacturer's recommended procedures. **f) A taut lanyard of synthetic rope may be used to secure lifelines provided the gap it **
closes does not exceed 100 mm (4 in). This lanyard shall be replaced annually at a minimum.
g) All wire, fittings, anchorage points, fixtures and lanyards shall comprise a lifeline
enclosure system which has at all points at least the breaking strength of the required lifeline wire. **
TABLE 8 **
LOA // minimum wire or rope diameter
under 8.5 m (28ft) // 3 mm (1/8 in)
8.5m - 13 m // 4 mm (5/32 in)
over 13 m (43 ft) // 5 mm (3/16 in)