On 6/9/99 14:19 johnegamble wrote: >Will a spad work on my size boat? Or do I need another type? Woof- big boat! That's a nice problem to have :-) I suppose the first step would be to estimate your static wind drag (see Hinz for method, or ask me for a spreadsheet that does that given your frontal and beam-on areas), then see how it compares to the holding power tests. The 2/3 power law for holding power as a function of weight will give you a ballpark if you can't find test data for your load case. I don't know a lot about really BIG anchors, but I do know that Bruce makes them up to North Sea oil platform size (what they were originally designed for). Cheers, Steve ------------------------------------------------ Stephen C. Darden Email: darden@xtra.co.nz Adagio Marine Ltd. Fax: 649/4037-213 P.O. Box 161 Voice: 649/4037-801 Russell NEW ZEALAND