I have just been re-reading the various posts on the forum on anchor chain. I appreciate your insights. It would appear that Liahona (hull #335) was originally outfitted by Amel with 10mm HT (high test) ISO 4565 chain. This is a G40 (Group 40) chain that gives a working load of 7,200 lbs (as best as I can determine).
The only marine chain that I can find in the USA is ACCO chain (now owned by Peerless). It is listed as 3/8 inch ISO chain with and inside link length of 1.220 inches that converts to 30.988 mm. In fact Budget Marine St. Martin list this chain as 3/8 in ISO P31, whereas our gypsy (as originally supplied by Amel) is a P30.
Any thoughts on the 0.988 mm difference in pitch making a difference. I know the DIN 28 mm Pitch doesn't fit the P30 gypsy.
Anybody else out there purchased and used ACCO 3/8 inch ISO HT P31 chain with the original Amel Lofrenz gypsy?
Amel SM 2000 Hull # 335
Lying St. Thomas