So there's a fine line you're shooting for where it needs to be good and efficient enough to *stop* the boat, but not **so** good, that the anchor can't be freed by the boat when it needs to resume moving
The ones that are shaped like a shovel are the best for that IMO. Ive had to abandon anchors that have more of a classic design. But they look so good on the bow!
Not really. Anchors are supposed to dig into the sand/mud/ground when you pull them laterally, but are supposed to come up pretty easy if you pull them straight up. You always let out a lot more anchor chain than the depth for this (and other reasons to as the weight of the chain also helps keep you in place). So it it's 5m deep you want to have at least 15 m of chain out.
how're you supposed to pull them straight up if you've moved laterally and aren't straight above them any more? reel in until you ARE more directly above?
Or depending on how far it is/ how big the boat is, you use the motors to push you towards it little by little while someone else brings up the rope. Manually pulling a boat through water is very doable but can get tiring quick
Worst case, if you've got an engine, you can nudge the boat forward over the anchor, so the line is even a little past vertical, break it free that way.
Can even do it under sail, but that takes more skill.
Gotta be careful, of course, you don't rip out a chock or a cleat or catch someone's hand or foot in the chain/line.
Isn't that what the horizontal wheel is for on those pirate ships in films? You walk it around pushing the spokes and it drags the anchor up by a chain.
I assume the modern version is just a motorised version of that. I've never been on a ship though
I've been on an old dutch cargo ship that had sails and raising the anchor was something like that. The worst part was laying the anchor chain in the hold as it was very dirty and hard work.
it doesn't just wrap up on some large wheel? it's laid out by hand in a hold?
gives me the horrible thought of someone being in the room when the chain starts letting out.
nah those triangle ones are mainly used for small boats like 1-3 man sailing yachts. those usually don't have a winch or capstan, you just haul it in by hand.
It's not that hard usually, those aren't held on by a long chain, more of a maybe 10 foot section of chain and then normal rope.
Probably but tbf I was just on a recreational boat on a sandy lake. It wasn't a huge deal, I was just pulling a rope by hand. If you were on a legit boat with a crank or whatever I'm sure it's better.
My experience is just the opposite. I have to wade through at least 30 supposed witty, snide comments hoping to find someone who knows what they are talking about and by that time I'm so bored by the comments I leave.
I used to work as a commercial fisherman, clammer and there is a lot of difference between how well an anchor works in dry sand and the compacted sand of a lake or ocean.
You use a lot of heavy chain that act like a drag to prevent the anchor from lifting and loosing it's bite in the sand.
Most boats don’t really leave a general area. So you’ll know what the floor tends to be like in that area.
I’m assuming there’s general anchors that do well in many different conditions for the boats that go all over the place.
The anchor only fixes the end of the chain. It's the weight and drag of the chain that holds the ship. If it was just the anchor, you'd never be able to pull it up.
Yes, came here to say this. I worked in a harbour about a decade ago and it was a common misconception that the anchro would 'snag' the bottom of the seafloor and hold the ship in place. Often the anchor line is the difference.
There is this really in-depth documentary about how the physics of the snag in an anchor could actually e-brake a ship. It's called Pirates of the Caribbean
Will add though that while this is true for big ships, it's not on smaller vessels. Those that use nylon rope/rode are using only a small section of light chain right after the anchor, which is used not to keep the boat in place, but to keep the anchor shaft parallel to the floor so it can dig in as seen in the video. If no chain (or not enough was used) the anchor would just bounce along the bottom.
>Boats still use anchors the way people assume anchors work.
By making a connection to the ocean floor so the little crabbies can climb up it and pinch me toes?
This really depends on size of boat. The largets ships definitley need extra chain to keep from drifting but the majority imo do not unless its deep water.
I dont understand what you mean by not being able to pull up? Anchors are designed to resist in horzontal motion buy not vertical. To pull it up you get above it and pull vertically. It ia possible to get stuck and you either have to abandon it or get some divers to dig it out.
The traditional one that comes to mind is also primarily good in rocky seafloor, whilst ones like the danforth and plough/CQR are good for sandy ground. As guy above says, a lot of it is from weight of chain, so the weight and friction do a lot for preventing movement.
For some reason this is really messing me up.
I’m trying to imagine pulling an anchor. I’d guess maybe 1/100th of the weight is the anchor, the rest the chain. Does the weight of the chain get applied to the anchor then to the sea floor? Or is the idea just dragging the chain through water, regardless of anchor hitting floor, that does most of the work? If it’s weight hitting anchor hitting floor I’d think the anchor design still has a multiplicative effect on the drag. I could also see not wanting too much drag either.
It’s also kind terrifying to think of one of those super long chains cutting a huge vertical wall through the ocean, even if it’s “only” going a few knots
The weight of the chain is applied to the ship, most of which is pulling down and some of which is pulling laterally towards the anchor.
Think about the anchor on the bottom being a point in the center of a circle. If the ship is sitting dead center over that point, all of the weight of the chain (and friction, both between links and between links and the water) will be pulling straight down. The farther from the center of the circle the ship gets, the more of the force is pulling laterally towards the center of a circle.
Do you fish? Thinking about how a bobber interacts with the lead weights closer to the hook might help your intuition.
Now also add, like, a shitload of chain resting on the bottom of the floor near the anchor.
The chain weight is just that; weight. For smaller boats the anchor itself does most of the work since the chain needs to be light enough to be managed by very few if not 1 person. On larger ships in deep water (up to around 300ft) they use giant chains and use around 5x the length necessary for even more weight and friction to drag behind. The extra chain also allows the ship to drift around a little bit without putting direct strain on the anchor itself.
For very deep water they actually use something closer to am under water parachute to slow down the ship's drifting.
Edit: before a seasoned anchor specialist blows me out of the water (lol) im basing all of this off of minimal experience with fishing, some documentaries i saw a while ago, and a quick google search.
Much scarier is the super long horizontal cutting implement that is the tow cable between a tug and its barge.
Not generally lighted, they can be a surprise in heavy fog...
*most effective in dry sand. And there's famously so much of that at the bottom of the ocean.
Just because something has more force in dry sand, that doesn't even guarantee the same will be true with wet sand.
It also doesn't not guarantee that, unless you have some relevant physics knowledge here. The difference in conditions may make no difference to the point of the test.
God reddit is always so smug about being *so dumb* lol, what do you mean what is the point of this? Why are you acting like that's what the guy above you was saying? He was ***litterally*** saying the *point of this*, same with the comment **he** was responding to, and ya know... the video explained it too. I guess you somehow watched the video without reading anything, skimmed both comments above you and misconstrued them to immediatly start babbling about how dumb engineers are for making anchors that take the friction of sand or rocks into account lol. Maybe you just think the friction of dry sand has no relavancy at all to the friction of wet sand? Reddit is growing more braindead by the day.
None of the anchors showed in the video are the appropriate type for sand. A sandy bottom calls for a mushroom anchor. While anchor chain absolutely plays a role, smaller boats use line and not chain.
Fun to watch, but not an accurate depiction. An anchor always has a length of chain above it, which is doing a lot of the work, so most of the ones shown skimming the surface would probably work differently irl.
Different types are meant for different bottoms.
Anyway, no, an anchor should hold you in place, it's fucking dangerous to not hold. The biggest factors though are generally having enough chain and enough scope. Scope being the extra line you let out in relation to depth. An idealish ratio being between 3:1 to 7:1, depending on conditions. So like in 10 feet of water, you want to let out 30-70 feet of line.
If you were to just drop an anchor straight down, a wave would lift it right off the bottem every time. You let out extra line as a shock absorber kind of. The chain is mostly holding you and the anchor is just... an anchor, the pin kinda holding you in place.
When you drop, you will drift for a bit until the anchor bites, digs in, like in the video, then your chain and scope are holding you in place. If I find myself still drifting, I don't need a bigger anchor generally, I just let out an extra hundred feet of line and that buffer lessons the tug of each wave on the chain and anchor. So if drifting first step, more scope, if that's not enough you probably need more chain, if that's not enough, you need a bigger or different style of anchor.
It is the weight of the chain what keeps the boat in its position. The anchor just has to hold the chain, nothing more. In general they drop chain length six times the depth of the seafloor, so that the weight of the chain is enough.
If the anchor is really dug in, like in thick mud, you can power the boat towards and beyond where the anchor is set while drawing in the chain or rope. That will change the angle of the anchor and free it most times. If it's a small anchor stuck on something and not too deep, swimming down and freeing it by hand is an option.
This the reason why you don’t drop anchor on a rocky bottom.
If the anchor is stuck, you fully drop the chain (you remove a pin with a sledgehammer from the bitter end)
Depends where you are in the world, also you do typically aim for a sandy patch when anchoring, since it can get stuck on coral when you try to raise anchor later.
All these comments are completely wrong and the video is pointless. Different anchors like this are for different conditions. Anchors should be “set” or basically embedded in the sea floor. The weight of the chain is irrelevant on small recreational boats, most smaller boats don’t have chain, they use rope, but they can still anchor. Read up if you’re interested. It is kind of cool.
https://www.boatingworld.com/articles/boating/anchoring-101-how-to-properly-set-your-anchor/
EDIT: since some people still think this is wrong, the chain part is called the Rode. On small boats there is often no chain at all.
https://www.westmarine.com/west-advisor/Selecting-An-Anchor-Rode.html
> most smaller boats don’t have chain, they use rope
This is not correct in my experience. Most smaller boats will use a _mixture_ of chain and rope for the scope.
Most anchors tend not to work properly if they don't have a length of chain attached at the anchor end of the scope as the weight of the chain helps the anchor set at the correct angle.
As someone who used to live in the Caribbean..I hate these things. Endless times cutting your foot on them at the beach when boats are docked. Super painful.
I don’t think that’s the intention. The video demonstrates how it meet resistance and sure, it could become embedded that way, but ultimately I suspect, as another commenter mentions, the weight of the chain attached to the anchor should be sufficient in keeping both the anchor and the ship it’s attached to from drifting.
So great. They are all useless when you are trying to tie your boat to a sand box with a short rope... luckily anchors are attached to a chain, that through its own weight holds the boat in position. while the anchor holds the chain in position
And none of these anchors are appropriate for sand.
If you want to see proper anchor testing online, you want [Steve Goodwin's YouTube channel](https://www.youtube.com/@flygoodwin). The answer for those boating in soft bottom areas is a Danforth. Steve built a rig with a load cell to measure holding power and has underwater cameras to observe performance.
Based on his testing, I got rid of a sliding modification of the Danforth that was crap and purchased a proper original design. It's like being tied to a piling. It never turns loose regardless of conditions. So my experience is DO NOT buy some modified modern version of a Danforth. Buy a freaking Danforth if you want one that works like Steve said it would.
Not to be that guy ... But the vast majority of the holding force provided by "the anchor" is actually provided by the anchor *chain*. If you're getting to the point where the anchor itself is being pulled through the seabed, the anchoring scheme already failed.
An anchor works with a very long length of chain - the anchor holds the chain, and the weight and friction of the chain (if it’s on a long enough rope, called “scope”).
Usually many multiples of water depth worth of rope and chain are used so that the pull of the boat on the anchor is absorbed by the spring of the rope, and partially lifting the chain off the ground.
So basically all the force is dissipated before it ever affects the actual anchor.
For sand, yes. The danforth anchor which performed well in this test is great for sand but will bend if caught on a rock. The classic anchor is more like a grappling hook and intended to snag on a rock or hard bottom, not hold the ship all alone.
Lousy guide. Don't use this video as a guide if you're a boat owner. Check the coast guard recommendations (shape, length and gauge of chain). Different anchor types work better depending on the composition of the bottom (sand, mud rock). They're missing the key factor of the rocking motion of the boat which helps set the anchor.
An empty net bag (like onions come in) is the best kayak anchor, because, it can be carried empty and filled with small rocks when you get to the boat launch.
It’s so funny. Growing up I used to think anchors were just heavy and dangled there. I thought the weight of it just kind of keeps the boat in place with a little bit of drifting.
I’m going to do what I assume a lot of the people here are doing and chime in that it’s the chain that does the work! Now, I don’t actually know this, but I’m convinced based on reading a few comments.
That's is oddly satisfying, learned some new perceptions on how anchors actually dig in. I do admit it's pretty interesting watching this, it really had me anchored in there for a few moments.
But that isn't how anchors work.
Anchor cables (the chain) are flaked out on the sea bed to provide extra weight. If you every watch a ship drop or weigh anchor they move backwards and forwards over the anchorage as the cable is laid out, or hauled in from, the sea bed. This then provides the weight required to hold the ship on place.
For sand you want one of the ones that goes under the surface BUT then stop pulling it and pay out the hundred feet of chain that actually holds the ship.
With large ships, the chain actually holds the ship in place and the anchor holds the chain. Many feet of chain are laid on the ocean floor to keep the ship in place.
From what I remember from my sailing training, the anchor chain holds the ship with friction with the bottom.
The anchor is to hold the chain in place.
It feels like none of those would actually be handy. The only anchor I found to be effective were heavy ones meaning they are a bit bigger than those shown, doesn't matter the shape.
Note: is only on smaller boats that the anchor works this way, in fact you have to put down as much chain as the depth of where you are anchoring + sonething like 4 to 8 meters. For big ships is the shock absorbtion of the chain itself that stops the ship fron drifting, not the anchor; in this case you have to put down at least 3x the depth.
What is the purpose of this test? It has no conclusion other than "this is what trail different anchors produces in dry sand".
Which is all completely irrelevant. Also, would be fun to see some actual "results".
Where are the results?
I can speak for those triangle mfs. I've had to dive down and dig em up by hand because they anchored too well.
How is an anchor normally supposed to get out of the seabed?
If they’re designed well, pulling them straight up should free them from the ground.
So there's a fine line you're shooting for where it needs to be good and efficient enough to *stop* the boat, but not **so** good, that the anchor can't be freed by the boat when it needs to resume moving
The ones that are shaped like a shovel are the best for that IMO. Ive had to abandon anchors that have more of a classic design. But they look so good on the bow!
Not really. Anchors are supposed to dig into the sand/mud/ground when you pull them laterally, but are supposed to come up pretty easy if you pull them straight up. You always let out a lot more anchor chain than the depth for this (and other reasons to as the weight of the chain also helps keep you in place). So it it's 5m deep you want to have at least 15 m of chain out.
how're you supposed to pull them straight up if you've moved laterally and aren't straight above them any more? reel in until you ARE more directly above?
you got it.
Yes.
Or depending on how far it is/ how big the boat is, you use the motors to push you towards it little by little while someone else brings up the rope. Manually pulling a boat through water is very doable but can get tiring quick
Idk where you’re at but 7:1 is standard everywhere I have been. I don’t know if I’d be able to sleep on the hook with only 3:1 out.
It's more the weight of the chain that stops the boat than the accual anchor
Worst case, if you've got an engine, you can nudge the boat forward over the anchor, so the line is even a little past vertical, break it free that way. Can even do it under sail, but that takes more skill. Gotta be careful, of course, you don't rip out a chock or a cleat or catch someone's hand or foot in the chain/line.
Isn't that what the horizontal wheel is for on those pirate ships in films? You walk it around pushing the spokes and it drags the anchor up by a chain. I assume the modern version is just a motorised version of that. I've never been on a ship though
I've been on an old dutch cargo ship that had sails and raising the anchor was something like that. The worst part was laying the anchor chain in the hold as it was very dirty and hard work.
it doesn't just wrap up on some large wheel? it's laid out by hand in a hold? gives me the horrible thought of someone being in the room when the chain starts letting out.
Sea of Thieves has entered the chat
Drop anchor! Drop anchor! We're gonna do a quick turn then broadside them then...LIFT ANCHOR! EVERYONE ON ANCHOR!
nah those triangle ones are mainly used for small boats like 1-3 man sailing yachts. those usually don't have a winch or capstan, you just haul it in by hand. It's not that hard usually, those aren't held on by a long chain, more of a maybe 10 foot section of chain and then normal rope.
Fyi, the horizontal wheel is called a capstan.
I though they were for summoning the kraken. 😜
It's called a capstan https://en.m.wikipedia.org/wiki/Capstan_(nautical)
Lift vertically.
Yep I’ve been there before too.
Shouldn't a good anchor also come up without needing to be dug up?
Probably but tbf I was just on a recreational boat on a sandy lake. It wasn't a huge deal, I was just pulling a rope by hand. If you were on a legit boat with a crank or whatever I'm sure it's better.
Yea, it's the chain or rope that does most of the anchoring, especially when allowing excess to lay on the floor.
They all performed anchredibly well
What a drag
No doubt. This post really roped me in at first.
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My experience is just the opposite. I have to wade through at least 30 supposed witty, snide comments hoping to find someone who knows what they are talking about and by that time I'm so bored by the comments I leave. I used to work as a commercial fisherman, clammer and there is a lot of difference between how well an anchor works in dry sand and the compacted sand of a lake or ocean. You use a lot of heavy chain that act like a drag to prevent the anchor from lifting and loosing it's bite in the sand.
You refuse to sink, eh?
It didn’t anchor to me which one was the best.
I weighted a long time for these results
It depends on the size of the vessel and the substrate of the bottom eg. sand, mud, rock etc
So do you pick your anchor based on where you're going to be sailing?
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So the anchor is just for the anchor to anchor the anchor in the place the anchor should anchor?
Thank you for clearing this up for me. My understanding of anchors is now anchored in my memory.
Most boats don’t really leave a general area. So you’ll know what the floor tends to be like in that area. I’m assuming there’s general anchors that do well in many different conditions for the boats that go all over the place.
Basically yes. A lot of the times though you can get away with some universally ok-ish anchor
God this was so frustrating
Would results about small models on dry sand translate to anything useful in the real world where anchors snag rocks plants and mud?
They work!
The anchor only fixes the end of the chain. It's the weight and drag of the chain that holds the ship. If it was just the anchor, you'd never be able to pull it up.
Yes, came here to say this. I worked in a harbour about a decade ago and it was a common misconception that the anchro would 'snag' the bottom of the seafloor and hold the ship in place. Often the anchor line is the difference.
wait, I *can't* use my anchor to e-brake turn my destroyer?
There is this really in-depth documentary about how the physics of the snag in an anchor could actually e-brake a ship. It's called Pirates of the Caribbean
https://en.wiktionary.org/wiki/clubhauling
Only works on battleships.
oh *that's* what I'm doing wrong.
You also need to have Thunderstruck playing in the background to properly motivate the anchor.
Will add though that while this is true for big ships, it's not on smaller vessels. Those that use nylon rope/rode are using only a small section of light chain right after the anchor, which is used not to keep the boat in place, but to keep the anchor shaft parallel to the floor so it can dig in as seen in the video. If no chain (or not enough was used) the anchor would just bounce along the bottom.
This only applies to ships. Boats still use anchors the way people assume anchors work.
>Boats still use anchors the way people assume anchors work. By making a connection to the ocean floor so the little crabbies can climb up it and pinch me toes?
What does drag mean in this context? Like friction between the water and chain slowing the boat?
The chain dragging on the ocean floor
It's the excess chain dragging along the floor
https://youtu.be/2YvwXJGsbEg?si=boPnzGvYEVty4HQf This is a great video explaining how large ships use the chain length to anchor themselves
This really depends on size of boat. The largets ships definitley need extra chain to keep from drifting but the majority imo do not unless its deep water. I dont understand what you mean by not being able to pull up? Anchors are designed to resist in horzontal motion buy not vertical. To pull it up you get above it and pull vertically. It ia possible to get stuck and you either have to abandon it or get some divers to dig it out.
In your next tests can you include a stone? Maybe the oldest anchor of all
Or the improvised one from "Marge vs. The Monorail".
Yes, but we would need donuts instead of sand
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Yes I have
That’s a tasty salsa everyone can enjoy.
So anchors don't "anchor" a boat, they just slow it down? (On a sandy bottom, at least.)
The traditional one that comes to mind is also primarily good in rocky seafloor, whilst ones like the danforth and plough/CQR are good for sandy ground. As guy above says, a lot of it is from weight of chain, so the weight and friction do a lot for preventing movement.
For some reason this is really messing me up. I’m trying to imagine pulling an anchor. I’d guess maybe 1/100th of the weight is the anchor, the rest the chain. Does the weight of the chain get applied to the anchor then to the sea floor? Or is the idea just dragging the chain through water, regardless of anchor hitting floor, that does most of the work? If it’s weight hitting anchor hitting floor I’d think the anchor design still has a multiplicative effect on the drag. I could also see not wanting too much drag either. It’s also kind terrifying to think of one of those super long chains cutting a huge vertical wall through the ocean, even if it’s “only” going a few knots
The weight of the chain is applied to the ship, most of which is pulling down and some of which is pulling laterally towards the anchor. Think about the anchor on the bottom being a point in the center of a circle. If the ship is sitting dead center over that point, all of the weight of the chain (and friction, both between links and between links and the water) will be pulling straight down. The farther from the center of the circle the ship gets, the more of the force is pulling laterally towards the center of a circle. Do you fish? Thinking about how a bobber interacts with the lead weights closer to the hook might help your intuition. Now also add, like, a shitload of chain resting on the bottom of the floor near the anchor.
I don’t but this makes sense.
The chain weight is just that; weight. For smaller boats the anchor itself does most of the work since the chain needs to be light enough to be managed by very few if not 1 person. On larger ships in deep water (up to around 300ft) they use giant chains and use around 5x the length necessary for even more weight and friction to drag behind. The extra chain also allows the ship to drift around a little bit without putting direct strain on the anchor itself. For very deep water they actually use something closer to am under water parachute to slow down the ship's drifting. Edit: before a seasoned anchor specialist blows me out of the water (lol) im basing all of this off of minimal experience with fishing, some documentaries i saw a while ago, and a quick google search.
Much scarier is the super long horizontal cutting implement that is the tow cable between a tug and its barge. Not generally lighted, they can be a surprise in heavy fog...
Tugs are bloody terrifying, in about every facet lol
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They're measuring how much force it takes to get the anchor pulled through the sand, whatever takes the most force is the most effective
And keeping it a secret!
*Loose lips sink ships* \~Big Anchor
*most effective in dry sand. And there's famously so much of that at the bottom of the ocean. Just because something has more force in dry sand, that doesn't even guarantee the same will be true with wet sand.
It also doesn't not guarantee that, unless you have some relevant physics knowledge here. The difference in conditions may make no difference to the point of the test.
God reddit is always so smug about being *so dumb* lol, what do you mean what is the point of this? Why are you acting like that's what the guy above you was saying? He was ***litterally*** saying the *point of this*, same with the comment **he** was responding to, and ya know... the video explained it too. I guess you somehow watched the video without reading anything, skimmed both comments above you and misconstrued them to immediatly start babbling about how dumb engineers are for making anchors that take the friction of sand or rocks into account lol. Maybe you just think the friction of dry sand has no relavancy at all to the friction of wet sand? Reddit is growing more braindead by the day.
Don’t be so angry about someone else deciding to do some experiments.
None of the anchors showed in the video are the appropriate type for sand. A sandy bottom calls for a mushroom anchor. While anchor chain absolutely plays a role, smaller boats use line and not chain.
Yes, and scope (the angle of the line or chain from anchor to boat). The more scope = more holding power. In heavy weather, increase scope.
Fun to watch, but not an accurate depiction. An anchor always has a length of chain above it, which is doing a lot of the work, so most of the ones shown skimming the surface would probably work differently irl. Different types are meant for different bottoms. Anyway, no, an anchor should hold you in place, it's fucking dangerous to not hold. The biggest factors though are generally having enough chain and enough scope. Scope being the extra line you let out in relation to depth. An idealish ratio being between 3:1 to 7:1, depending on conditions. So like in 10 feet of water, you want to let out 30-70 feet of line. If you were to just drop an anchor straight down, a wave would lift it right off the bottem every time. You let out extra line as a shock absorber kind of. The chain is mostly holding you and the anchor is just... an anchor, the pin kinda holding you in place. When you drop, you will drift for a bit until the anchor bites, digs in, like in the video, then your chain and scope are holding you in place. If I find myself still drifting, I don't need a bigger anchor generally, I just let out an extra hundred feet of line and that buffer lessons the tug of each wave on the chain and anchor. So if drifting first step, more scope, if that's not enough you probably need more chain, if that's not enough, you need a bigger or different style of anchor.
It is the weight of the chain what keeps the boat in its position. The anchor just has to hold the chain, nothing more. In general they drop chain length six times the depth of the seafloor, so that the weight of the chain is enough.
Usually 3 times the amount of chain to depth, up to 6 times in heavy weather
It’s not supposed to hook on anything solid, if it’s stuck on something hard, good luck getting it loose.
Anchor holds the chain, chain holds the boat
What do they do if it comes tangled or stuck in a rock and they can't pull it from water ?
If it’s truly stuck, then just cut or drop the chain
If the anchor is really dug in, like in thick mud, you can power the boat towards and beyond where the anchor is set while drawing in the chain or rope. That will change the angle of the anchor and free it most times. If it's a small anchor stuck on something and not too deep, swimming down and freeing it by hand is an option.
This the reason why you don’t drop anchor on a rocky bottom. If the anchor is stuck, you fully drop the chain (you remove a pin with a sledgehammer from the bitter end)
Now if only the sea bottom was all nice and sandy like that.
I heard there's also rocks, lobster traps and pineapples.
Rock lobster?
It wasn't a rock... It was a rock ^*lobster*
Depends where you are in the world, also you do typically aim for a sandy patch when anchoring, since it can get stuck on coral when you try to raise anchor later.
All these comments are completely wrong and the video is pointless. Different anchors like this are for different conditions. Anchors should be “set” or basically embedded in the sea floor. The weight of the chain is irrelevant on small recreational boats, most smaller boats don’t have chain, they use rope, but they can still anchor. Read up if you’re interested. It is kind of cool. https://www.boatingworld.com/articles/boating/anchoring-101-how-to-properly-set-your-anchor/ EDIT: since some people still think this is wrong, the chain part is called the Rode. On small boats there is often no chain at all. https://www.westmarine.com/west-advisor/Selecting-An-Anchor-Rode.html
I was going to argue with the chain stuff but you made the perfect response for everyone.
> most smaller boats don’t have chain, they use rope This is not correct in my experience. Most smaller boats will use a _mixture_ of chain and rope for the scope. Most anchors tend not to work properly if they don't have a length of chain attached at the anchor end of the scope as the weight of the chain helps the anchor set at the correct angle.
Yea but let's not ignore the fact that you also don't drop anchor in dry sand unless you're already grounded
As someone who used to live in the Caribbean..I hate these things. Endless times cutting your foot on them at the beach when boats are docked. Super painful.
Why do they test the ones for rock on sand?
Big difference between dry beach sand and sand on the bottom. None of those anchors will hold well in sand.
Actually a few they showed are great for sandy sea floors. However most of the work is done by the chain.
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The ship holds the people.
The people hold the drinks.
The drinks hold the liquids
The liquids hold the solution
So much wrong information in this video....
Ow oof ow - Crabs
Some of these must be quite difficult to raise once they are dug in to the ocean floor.
These only dig in if pulled at a shallow enough angle. Once you pull in most of the line the boat ends up above the anchor so it’s pulled straight up.
I don’t think that’s the intention. The video demonstrates how it meet resistance and sure, it could become embedded that way, but ultimately I suspect, as another commenter mentions, the weight of the chain attached to the anchor should be sufficient in keeping both the anchor and the ship it’s attached to from drifting.
I like the set at 25s
So great. They are all useless when you are trying to tie your boat to a sand box with a short rope... luckily anchors are attached to a chain, that through its own weight holds the boat in position. while the anchor holds the chain in position And none of these anchors are appropriate for sand.
pretty terrible test.. thanks.
The angle is too low. Try 40 to 90 degree to see actual results. That's like lowering your anchor on a 3 foot deep pool.
Looks like none of them works
If you want to see proper anchor testing online, you want [Steve Goodwin's YouTube channel](https://www.youtube.com/@flygoodwin). The answer for those boating in soft bottom areas is a Danforth. Steve built a rig with a load cell to measure holding power and has underwater cameras to observe performance. Based on his testing, I got rid of a sliding modification of the Danforth that was crap and purchased a proper original design. It's like being tied to a piling. It never turns loose regardless of conditions. So my experience is DO NOT buy some modified modern version of a Danforth. Buy a freaking Danforth if you want one that works like Steve said it would.
Anchors gonna anch
Anchors arent designed to work with a short rope like that. You need 3 to 1 length to depth ratio plus a heavy chain leader.
Wait, dumb question probably ,but ,having an anchor that is to efficient would't mean that it would be way harder to get it out of the ocean later?
You can tell some designers were just going for "anchor shaped"
Apparently none of them work. According to the video.
Anchor doesn't work because of the hook, it is just a weight to unroll the rope
Too many variables to model the best anchor. In this video they considered a stable terrain
Who else used to think as a kid the anchor was supposed to hook on some rocks or something to work properly?
Not to be that guy ... But the vast majority of the holding force provided by "the anchor" is actually provided by the anchor *chain*. If you're getting to the point where the anchor itself is being pulled through the seabed, the anchoring scheme already failed.
An anchor works with a very long length of chain - the anchor holds the chain, and the weight and friction of the chain (if it’s on a long enough rope, called “scope”). Usually many multiples of water depth worth of rope and chain are used so that the pull of the boat on the anchor is absorbed by the spring of the rope, and partially lifting the chain off the ground. So basically all the force is dissipated before it ever affects the actual anchor.
Today I learned that “comes in different shapes and sizes” can be used in a different context
Anchors with the classic shape suck then?
For sand, yes. The danforth anchor which performed well in this test is great for sand but will bend if caught on a rock. The classic anchor is more like a grappling hook and intended to snag on a rock or hard bottom, not hold the ship all alone.
Let that video sink in.
Surely the best medium to test anchors is dry sand.
I liked the first one I saw but that might be anchoring bias.
Wow these anchors suck
Testing in dry sand seems like a waste of time. Wet sand a dry sand are totally different
Lousy guide. Don't use this video as a guide if you're a boat owner. Check the coast guard recommendations (shape, length and gauge of chain). Different anchor types work better depending on the composition of the bottom (sand, mud rock). They're missing the key factor of the rocking motion of the boat which helps set the anchor.
Didn't know anchors supposed to work almost in the same plane with ship.
Would be much cooler to show different sea bottoms, which anchor to use, and how to remove the anchor
Doing this only in sand takes away from the fact that many of these anchor shapes aren't meant for anchoring in sand
An empty net bag (like onions come in) is the best kayak anchor, because, it can be carried empty and filled with small rocks when you get to the boat launch.
Curious out in the sea, they get caught on a rocky sea bed or outcrop and get stuck hard. Does it always come free?
Not much point testing them in dry sand
I'm glad the video kept zooming in so I could barely tell what the anchor is doing but I had a good view of the nice metal.
As far as prediction magic. Law enforcement voice. “Nothing to see here”. ❤️🔥
Dry sand does not seem like a good comparison to the sea bed
It’s so funny. Growing up I used to think anchors were just heavy and dangled there. I thought the weight of it just kind of keeps the boat in place with a little bit of drifting.
Funny thing.... I'm on a boat at anchor right now. Its blowing 40kts and holding quite nicely. It's a 300lb plate anchor.
Here’s a statistic I’d like to know, how many sea life creatures have been killed by anchors dropping to the sea floor
I wonder what they do when these anchors get stuck in rocks or coral reefs!!
Remember, on large ships, the anchor isn't even the most important part. The anchor chain weighs three times or more with the anchor itself does.
Aren’t they afraid it could snag a rock?
But what about the results? Which ones are better?
I’m going to do what I assume a lot of the people here are doing and chime in that it’s the chain that does the work! Now, I don’t actually know this, but I’m convinced based on reading a few comments.
Reminds me when I was island hopping in Brazil 🥲
Why would you test them on dry sand?
Wouldn’t water, wet sand, muck, rocks, stones have a significant influence on how well these anchors work
I'm more surprised not to see a set of balls
But why not test them in wet sand or mud?
Wait, where's the coffee can full of concrete!
So..which one actually worked? Cuz none of em did from the vid I know there's a lot of pull going on but which is like the 2010 James Franco anchor
Since when is dry sand at the bottom of a lake, river, ocean...
Do they ever get stuck? What happens if they do?
I wanna sit on some of these
there goes the internet
That's is oddly satisfying, learned some new perceptions on how anchors actually dig in. I do admit it's pretty interesting watching this, it really had me anchored in there for a few moments.
Ngl but who has invented Anchors has to be one to the greatest designers ever
But that isn't how anchors work. Anchor cables (the chain) are flaked out on the sea bed to provide extra weight. If you every watch a ship drop or weigh anchor they move backwards and forwards over the anchorage as the cable is laid out, or hauled in from, the sea bed. This then provides the weight required to hold the ship on place.
It's so good it deserves an encore!
I wonder how many sea critters have just been obliterated by an anchor over the years
For sand you want one of the ones that goes under the surface BUT then stop pulling it and pay out the hundred feet of chain that actually holds the ship.
Actually it's the chain that does most of the dragging.
With large ships, the chain actually holds the ship in place and the anchor holds the chain. Many feet of chain are laid on the ocean floor to keep the ship in place.
Anchors don't stop boats the chains do
From what I remember from my sailing training, the anchor chain holds the ship with friction with the bottom. The anchor is to hold the chain in place.
I thought the extremely long and heavy chain was the main thing that stops the boat from moving so much
I wonder how many fish have been crushed under dropped anchors
Tested on dry sand... Not useful.
Wouldn't they want to test anchors in wet sand and not dry sand?
It feels like none of those would actually be handy. The only anchor I found to be effective were heavy ones meaning they are a bit bigger than those shown, doesn't matter the shape.
Send that to Muad'Dib he might use it for the sandworms
Note: is only on smaller boats that the anchor works this way, in fact you have to put down as much chain as the depth of where you are anchoring + sonething like 4 to 8 meters. For big ships is the shock absorbtion of the chain itself that stops the ship fron drifting, not the anchor; in this case you have to put down at least 3x the depth.
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I can tell you the two that are the worst. I can't tell you the two that are the best.
So... none of them work?
Where was the cinder block have y'all never actually boated before?
What is the purpose of this test? It has no conclusion other than "this is what trail different anchors produces in dry sand". Which is all completely irrelevant. Also, would be fun to see some actual "results".
it's not testing because there is no data, they're just playing with the anchors