Originally Posted by sanctuarysam
thanks for posting the article. i found it helpful, even if some of the information was inaccurate (such as the pricing for your anchors).
now..how soon might we see a distributor in the US? i suspect the freight is almost as much as the anchor were i to order from nz or canada.
now on a related topic..is there a formula for determing desirable length of chain:rope.
it appears Rocna is the way to go..
Hi Sam - US distributor in the works, ask us for an update after the Annapolis show. But these things do take time.
Chain : rope - once you consider all the factors, you come away with the conclusion that 100% chain is "ideal" and chain the length of the boat is the absolute bare minimum. And you can compromise between those two extremes in any fashion you desire, according to the type of boating you do.
The advantages of chain to consider are:
- Durable on the seabed, rocks, coral, other boats
- Durable on your boat (no chafe)
- Provides catenary to keep the pull on the anchor at a lower angle (this factor becomes more important the deeper the water)
- Provides a certain amount of mass which equates to inertia, which helps prevent your boat "sailing" on the anchor
But of course it's heavy and doesn't absorb shock, so when choosing how much to carry, you can reduce the amount as much as possible until you don't want to "hurt" those advantages anymore, and make up the rest with rope. Make sense?
Re sizing: our recommendations are quite conservative, they're sort of based on Peter's attitude, which is formed from sailing around the world and visiting Antarctica and that sort of thing. It's a case of "don't oversize - we already did that for you".
As you say the 10 would probably be adequate for your boat, but consider that the boat may be heavier than the 9400lb displacement you mentioned - when is the last time you weighed it? If it is likely to be much over, you are in the domain of the 15.
BTW, anchors up to 15Kg / 33lbs we can ship anywhere in the world by regular airmail. Which is fairly economical and gets it to your door, none of this importing-by-freight lark which is required for the bigger ones. It's still not cheap - but not a deal breaker.