Mark, I have since learned (with Neil's help) that I actually do have the correctly sized Rocna for my length and displacement. For a 9m boat, the 10kg Rocna is recommended provided that displacement is less than 5 tons, or about 10,000 lbs. For some silly reason, I was calculating as if a ton was 1000 lbs, rather than 2000 lbs.
Robert H. -------- Original message -------- From: "Dr. Mark Bodnar via CnC-List" <cnc-list@cnc-list.com> Date: 05-06-2015 3:39 AM (GMT-08:00) To: cnc-list@cnc-list.com Cc: "Dr. Mark Bodnar" <drbod...@accesswave.ca> Subject: Re: Stus-List Did I upgrade or downgrade my ground tackle? I got stuck on the same issue. My CS 30 lists at 8000 lbs Went back and forth as it felt like I was landing right in the gap. But decided that I'd rather have a little extra. I'm not in an area where I'll be overnighting in marinas - so I figure the extra security will help me sleep. I was able to borrow a Ronca 15 from another lister, walk across the parking lot and do a rough test in my bow roller. Didn't have a 10 for comparison. Haven't gotten the Ronca wet yet - so no idea on performance. Mark On May 6, 2015 12:38:41 AM ADT, Robert Hrabinsky via CnC-List <cnc-list@cnc-list.com> wrote: My C&C 30 MKII displaces about 8,700 lbs unladen. I just replaced my 33lb Bruce with a 22lb Rocna. The question is: Am I an idiot? The Rocna sizing chart suggests a 15kg (33lb) anchor for my displacement, but the website goes on and on about how conservative their ratings are. It looks like a 10kg (22lb) Rocna would be recommended for a 30ft boat displacing 7k or less. I would have gone for a larger Rocna, but it wouldn't fit (the shank is too long). My reasoning is that the 22lb Rocna will almost certainly outperform the 33lb Bruce. What say you? Rob H. Sent from my Samsung device Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- Dr. Mark Bodnar -- Bedford Chiropractic
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