Here we go- New Anchor

richardbayle

richardbayle

Well-Known Member
Joined
3 Aug 2006
Messages
446
Location
French Antilles
www.richardbayle.com
Change of boat, need an anchor! So, Mantus or Rocna?
Bound to be asked so boat is 1976 Ron Holland design prototype for the One Ton Cup. She's beautiful and stupidly I fell in love and now she's mine.
She was completely restored in 2017/2018. Needs a refitted interior, currently stripped out as a race boat but I'm going to be cruising on her so new interior needed .
Current sailing area Caribbean
So having lit the blue touch paper I'll retire and wait for the flash bangs
?
 
To be a , little controversial as you've started off with the same 2 assumptions I made a couple of years ago. I bought a Knox. Similar holding power to the ones you mention. A little newer design by a guy who should know what he was talking about (Prof John Knox RIP, Lloyds anchor assessor) and British made.
Same price delivered to me as a Rocna and we've lived happily together now for 2.5 years anchoring 70 or 80 nights a year
 
I like the Knox design. Having the sharp points should help it penetrate well.I am pleased with mine. For some reason the Knox does not figure in any comparitive tests I have seen.
 
As Pasarell says, Knox. I have owned the 18kg version and been very happy with it. Has set fast and firm in sand and, silts and clays.
Knox Anchors
 
Have had no problems with the Rocna. My next boat will have a spade. Just the usual internet research.
 
Ricna 25kg have set first time always, never dragged and been in all substrates including weed.
But the new anchors are all going to give you what you need , mantis, Knox, Roxna etc, what fits on the roller is the issue
 
Thanks guys, none of the vitriol I must admit I was concerned about. On my previous boat, a Hunter 41 DS, my Delta anchor came adrift on two occasions whilst anchored in Prince Rupert Bay, Dominica so have decided not to go that route.
I must admit the Sarca Excell looks a good alternative and they'll deliver here which is a plus. Can't find anyone who sells it on the island. So a long wait as it's been sent by UPS who are useless at delivering to Guadeloupe, take at least 3 times longer than DHL, then I have TVA + octroi des mers; which is a sneaky tax.
Oops sorry got off subject there.
Thanks again guys, fair winds and lets hope the world opens up to us soon.
 
C08 said:
Thanks for the link but those test results are from the Knox website - I was thinking about independant comparisons between NG Anchors, the ones I have seen do not include the Knox!
Click to expand...

That doesn't bother me. The reason I bought my Knox was based on those articles, the fact that it is made in the UK and the strength of the steel. As GHA states "Bet no one on here could tell the difference between any new gens if using them blindfolded".

Rocna is a good anchor based on independent tests and they messed up the fabrication in China, reports gathered by an independent person who specialises in recommendations suggests that the Rocna is prone to not setting, in some conditions, on a 180. I wouldn't trust independent testing anymore than a test which was carried out by the manufacturer. It is the sum of the information, the personal choice, whether it fits or not and budget.
 
I have used both for over 3000 nights at anchor roughly divided equally between these two models. For many of the deployments I have dived to insect the anchors (and other models in the anchorage).

The Rocna is an excellent anchor, but the Mantus M1 is a little bit better. It sets a little quicker and the long, thin, tapered fluke together with the higher tip weight produces exceptional performance in weed. However, the Rocna is also very good in both of these areas.

The biggest problem with the Mantus is that the tapered fluke is longer than the Rocna and the roll bar is considerably wider and larger. There are therefore some boats that the Rocna will fit well, but not the Mantus.

Below is a photo of my Rocna with a comparison of the roll bar of my Mantus placed over the Rocna fluke, to illustrate the significant difference. The two anchors are essentially the same size (weight).

2AMCquc.jpg


These last two photos illustrate the setting position of the Rocna (top) and the Mantus (bottom) showing the advantage of the wider roll bar producing a more aggressive attack of the tip into the substrate for the Mantus. The more tapered fluke shape can also be seen. However, I stress again that you cannot go wrong with either anchor.

SrxF69H.jpg


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I have posted many photos of the Mantus including a consecutive sequence showing every set of the Mantus together with every other anchor seen over an 18 month plus period.
 
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