Originally Posted by Maine Sail
1/4" HT BBB chain has a WLL of 2600 pounds but a breaking strength of 7800 pounds.. Something is just not adding up.. There is no way a 9000 pound boat can apply the breaking load even in a hurricane.
You might want to take a look at the Practical Sailor anchor rode load article recently published. Even a 38 foot catamaran in 65 knots does not exceed the the WLL of 1/4" chain..
Still I do like heavier chain if only for keeping sailing at anchor down a bit..
I do think pictures are in order...
Edit: Just saw the anchor as bent too. I would guess that a 7000 pound + load on the bow of a 9000 pound boat would nearly stand it on end.....
Obviously I didn't have a scale between my bow cleat and a chain link but, since your so good a guessing, what do you think, with main sail up, in 20 knots of wind, is the pull force, on a hung anchor, of a 1965 soverel 28?... Well with out guessing, and in the day's before digital camera phones where needed to prove anything happened at all, I can tell you with certainty, that it's enough force to bend a little 25 pound danforth and seperate the links of some tiny 1/4 anchor chain.
No guessing, or imagining, or quoting text book math, that's actual real world stuff... my bow dipped but came no where near standing on end, as you guessed.