Originally Posted by stillbuilding
Well GMac, I value your experience and judgement but from what I can see and recall
, and from consulting texts of yesteryear there has been quite a dramatic reduction in the sizes of anchors recommended by manufacturers. This might be a a recognition of design improvements, a drift towards lighter displacement
, or sheer wishful thinking but whatever the reasons I do think recommended anchor and other gear sizes have been trending down for past fifty years.
Yes and yet no. If you suss the latest batch of anchors out, the Rocna
, Supreme, Ultra and a couple of others, you'll see the length/displacement to anchor kg ratio, has actually decreased or in other words the anchors specs out from those are equal to or larger than what S/L, now Lewmar
, suggest for example with the CQRs and Deltas. But then if you are just coastal day cruiser or a can racer
the specs are a bit over cooked and you can downsize a bit.
The recommended Rocna
and Supreme by both of the respective sizing charts
for our datum boat is 15kg yet as much as we try we have one hell of a time trying to shift their 6/7kg versions. Most of the time we can't.
Personally I think the latest batch did the right thing and have sized the charts
cruzing yachts rather than harbour hoppers and in doing so it's got people who don't know the ins or outs or think it all about the anchor only, in a safer place.
But in many cases the recommended size is overkill for most hence why you hear so many saying how good their new anchor is. Of course it will be if you swap from a 30lber to a 40lber.... and then also add in the design improvement at the same time. I do have to laugh and many posts along the lines of - "I thru away my 30lb plow and got a new XXX 40lber. It works so much better and I don't drag any more. It's the greatest anchor ever made". Hello... absolutly zero surprise there, the only surprise would be if they didn't see a very dramatic improvement.
A couple of quick examples for a average 40fter from charts in use as I write -
recommends a 16kg
Supreme a 35 or 45lber (16 or 20kg)
Rocna a 25kg
CQR a 16kg
Manson plow a 45lber (20kg)
(note - off the top of my head
so hopefully they are right)
Don't see the new ones being lighter than the older ones and that's not even bringing in the often large design variations/improvements. Besides the new ones, or at least some of them, are more about area than weight. They are only being refered to in weights as who the hell knows what a 850sq/cm anchor looks like
Stick a 25kg on the bow of some 40fters and one can often be excused for thinking they hung the dingy off the wrong end of the boat. That's unless it's 3am while your anchored behind a coral
reef just south of MotoNoWhere in the middle of no where a nd it's gusting 60kts, then any anchor looks about 200 times too small
Hence my comment the latest bunch have upsized from what was the manufacturers recommended norm, which is good for the distance cruzers but maybe overkill for a harbour hopper. And that's ignoring what's between the boat and anchor, it can make a massive difference to the anchors performance most of the time.
Look back before the CQR arrived and some of those were monsters for sure but then many of those were just interesting shaped lumps that didn't have huge design holding power and relied more on just weight.
Not to sure he's that far off Cat. 1lb per foot was and still sort of is the 'starting point' for anchors on 'the average' boat so a 35lber on a 34fter would be common as muck, in fact it is. 10mm chain is huge for a 34fter so being a tad shorter than the norm is sort of not that bad. As long as the mantra aboard come anchor deployment time is 'scope, scope
and don't forget lots of scope', that system would work OK I would expect. Personally I'd rebalance it but if it's working why bother rushing into that.
Now about multihullers and their weird ideas. As the wind
rushes pasted their ears, so much faster than mono men
, and in doing so sucks out lots of grey stuff they................ Just joshing big fella
Now stop reading and go get sanding
that beast of yours. We are all waiting for the launching party