Solving our Anchor Dragging Blues + Mantus Anchor Swivel
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- čas přidán 28. 09. 2021
- This How-to video illustrates how we think we’ve solved most of the anchor dragging problems we have experienced over the last several months. Regardless of the type of sea floor we’ve anchored in, we typically start to drag our anchor when the wind gets up above 22 knots. We’ve had to re-anchor several times in one night, which has caused a lot of stress and anxiety for us. Fortunately, we think we’ve found a solution to our anchor dragging problems without having to go all in on a next generation anchor (although we’d like to get one someday). Additionally, we review and install a new Mantus Anchor Swivel, the S2 model.
P.S. Thank you Jonathan!
We missed the weather window for an Atlantic crossing in 2020, so we’re trying to stay in the Med-area until November 2021 when the Atlantic crossing weather window returns. We are now sailing in Greece, and we hope you enjoy the video!
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I would throw that chain away for year’s ago, But very impressed by the Swivel, simple and easy to maintain
I have seen more and more video's of the Delta's not holding. I too had the same issue and switched over to the Mantus anchor and have not yet had any negative issue with it. It holds faster and has not pulled free so far. I tried heavier Delta's and while they did help, still they would pull out in certain conditions. Much easier with one anchor I think if you ever get tired of this method, give one a try.
Friendly reminder to all reading/watching that scope must be calculated from the anchor roller to the seafloor, and account for tides. It is *not* to be calculated with water depth alone. Hypothetical example: If your roller is 5ft off the water, and the water is 5ft deep , your 10:1 scope would be 10x10 = 100ft rode (not 5x10 = 50ft as you'd incorrectly calculate with water depth alone.
We're on a Lipari 41 and have a 33kg/73lb Rocna Vulcan we've quite liked. The 44lb Delta the boat came with dragged.
If you have two anchors down on one rode, if the weather turns bad at night and you need to retrieve this ugly mess, you will not be able to.
You need to be able to just pull it up and reset, or get out of there.
If you do use two anchors they must be on separate rodes and you should be ready to ditch one (with buoy) and retrieve at a later time.
Big anchor, long scope.
Clever solution. Congratulation Guys!
Thanks József, and thanks also for watching the video!
The one thing cat owners always forget is the huge windage your boat has. You are riding on top of the water and have the same size as two mono hulls. You might watch the dozens of videos put out by s/v Panope, who tests anchors using very scientific methods. But the first thing you said about anchoring at 3-1 or 5-1 told me most of the reason you are dragging. Your scope should be 7-1 overnite and if it blows hard go out to 10-1. I'm not kidding here, a three to one is only for a brief stop for lunch not an overnight stay. Another thing I have noticed is that chain size makes a big difference, keeps the pull on the bottom. I know you cat guys are always worried about weight but I like to sleep at night when on the hook so which do you prefer? Switch to a rocna Vulcan, get some heavier chain, let out seven to one and sleep peacefully.
Agreed. We have a 65# Mantus and we go no less than 7-1 and if wind is above 30kts we go 10-1 to 12-1. We ditched our poorly performing Delta within a couple of weeks. We have never dragged our Mantus...ever. I would not ever use 2 anchors like this unless it is 100% forecast to be from one direction and not clocking/veering and the 2 anchors would be in V at the end of the rode, but the wind would have to be over 50kts to consider that.
We have held our boat, plus a Leopard 45 Cat which dragged and ended up T-boned on our hulls after he dragged anchor. Our 65# held both boats in 20+kts for 30mins and eventually I pulled it free with engines to get him off my bow.
Ore a Spade Anchor
Great job Guys! It seems a very good system to ancor !
Thanks Seb! You make awesome videos over there at the SAICOS Sealife Discovery CZcams Channel!!!!!
Great job! “I want tacos” LOL
Haha, you saw that! Thanks for watching!
Here’s hoping to less stressful nights!
Yes to less stressful nights! Thanks for watching!
Delta anchors perform poorly. All other modern anchors work well. Decide what size anchor you would want for a storm anchor. But that and put it on your bow as your main anchor. I have a 60ft 18 ton monohull. I have an 80kg anchor. I never drag. I sleep like a baby. I never anchor with two anchors, I have no anchor swivel and still don't know what they achieve. Anchoring is simple. Big anchor, lots of chain. In shallower water your 3-5 X depth is not enough. In very deep water you can get away with 2 -3 X depth. In 5m of water I will use 40m of chain. I have successfully anchored in 40m with 100m of chain in 40 knots.
Awesome! That seemed complicated though. Any chance a larger heavier new anchor would just do the job? If it were in the budget, of course!
Thanks for the comment Ada! Yes, a heavier new anchor would likely do the job too. We would also have to consider the capacity if the windlass (how much weight it can pull up), and also the cost of the newer heavier anchor. As we have shown in the video, we have two basic systems now (the primary anchor alone or both anchors) for less than the price of a newer heavier anchor. Regardless, we are happy with our solution and the price we paid to solve most of our problems. If anyone out there wants to let us demo a newer heavier anchor we will certainly do so! Excellent question!
Sorry folks this is not the answer. Go heavy, go long. Most Med yachts try to minimise the weight of their anchor and chain for cost and convenience. False economy, believe me. Get the best anchor and one size up chain and you'll never drag again.
invest money in a good anchor , like Rocna
Dude, #1, ditch the Delta Anchor,
Get a Mantus, or Rocna type.
Far Better
Next, use more scope, 5 to one extreme minimum.
You love to hear the anchor alarm, you'd not want to drag and not hear it.
Please take this video down, tour advice is dangerous.
Delta anchors are the worst ever made mate, also use 7 to 1 scope, most of your video has made something very simple over complicated , this was hard to watch
Why do you drag?
1. Multihulls have both more windage and swing than monos, therefore need increased anchor size and scope. You should be dropping a 33kg minimum.
2. 3:1 is only for light wind lunch stops, 4:1 for settled weather overnight in good holding and 5:1 minimum or anything questionable.
3. Yes, most charter boats have a delta anchor, not because it's good but because they are cheap.
4. Invest in one of the proven anchors showing good resetting after tripping, the rocnas, spade and mantus. I love my rocna vulcan because it performs very well, launches by itself easily and doesn't interfere with the bowsprit extension for the code zero.
Using a tandem anchor setup like you present is for storm conditions, if you have to resort to this for normal season conditions then your anchor setup is grossly deficient. I don't want to be downwind of you when they trip, foul then can't be brought up at 4am in a cloudburst.
I have been cruising over 25 years, used CQR, danforth, delta, bruce, spade, and rocna. I use the rocna for everyday AND storms, and have used a tandem setup in storms. The old delta I keep onboard is best for a sacrificial anchor if I'm staying in a mangrove bay for a whole season and don't want to bring it back onboard after months of growth is on it.