Sounds high, James. I show 883 feet (fresh water) with no safety factor, and 664 (FFW) with ABS safety factors. Jon On 10/24/2013 11:25 AM, James Frankland wrote: > Hi Jon, > Last time i ran the K350 on the spreadsheet, i got full collapse at > something like 1100ft. From you comment there, maybe ive got it wrong? > >