chain rode

[Catigale]

2 Rear anchor to reduce the Mac Dance

Tried and proven on Cuttyhunk every year.

The swing angle in 10-15 knot winds is reduced from about 100 degrees without mushroom to about 30-40 degree tops..

[DaveB]

I have anchored in Cuttyhunk many time back in the late 90's to early 80's. I always used a Bahiman Moor so I swung in my own Boats length. Also Egertown and other crowded anchorages. With the MacX I would do the same. (I can lift boards up and anchor were others can't)
Dave

2 Rear anchor to reduce the Mac Dance

Tried and proven on Cuttyhunk every year.

The swing angle in 10-15 knot winds is reduced from about 100 degrees without mushroom to about 30-40 degree tops..

[Divecoz]

I don't doubt you Cat.. So let me get this straight..
You drop over the side a Rubber Covered Mushroom Anchor ( Only 1 step above a Bowling Ball Mind You ) and its Drastically reduces the swing on your Mac???
Is It a deep mud bottom? I am not doubting you Cat , so I must be confused.. I can see the benefit though not very convenient .. of running it down the rode to the chain.. But with all the times I used one, a coffee can would have worked as well.. Humm I can only wonder what The Heck I did wrong ??

2 Rear anchor to reduce the Mac Dance

Tried and proven on Cuttyhunk every year.

The swing angle in 10-15 knot winds is reduced from about 100 degrees without mushroom to about 30-40 degree tops..

[vizwhiz]

Divecoz, I think you missed the points...there were two conversations being had at the same time...

Conversation One:
Attaching the mushroom anchor to the chain/rode interface acts as a snubber. As the boat moves back and tensions the rode, it has to lift that mushroom anchor off the bottom just by the tension in the rode. The tension needed to lift that mushroom anchor, and the amount of line that goes from angled to straight, works like the rubber snubber in your system. The explanation of the Sentinel is the same functionally, but the smaller weight is lowered straight down from the bow of the boat, not out at the chain/rode interface.



Conversation Two:
Cat uses the mushroom anchor off the stern to cut down on the swing. He was just explaining a second use for the same mushroom anchor as justification for having it aboard. Cat was not saying that having it attached to the chain/rode interface cuts down on swing at anchor...

Sooooo when are you getting down here?? Where are you landing?

[Divecoz]

Viz I guess I wrote it poorly.
I get the anchor snubber idea. I just never had "luck" with those round bottom Mushrooms doing anything but dragggging as an anchor..
I will be in P.C.Fla. on The 20th of Oct. Moving into the house on the 22nd..

Divecoz, I think you missed the points...there were two conversations being had at the same time...

Conversation One:
Attaching the mushroom anchor to the chain/rode interface acts as a snubber. As the boat moves back and tensions the rode, it has to lift that mushroom anchor off the bottom just by the tension in the rode. The tension needed to lift that mushroom anchor, and the amount of line that goes from angled to straight, works like the rubber snubber in your system. The explanation of the Sentinel is the same functionally, but the smaller weight is lowered straight down from the bow of the boat, not out at the chain/rode interface.

Conversation Two:
Cat uses the mushroom anchor off the stern to cut down on the swing. He was just explaining a second use for the same mushroom anchor as justification for having it aboard. Cat was not saying that having it attached to the chain/rode interface cuts down on swing at anchor...

Sooooo when are you getting down here?? Where are you landing?

[vizwhiz]

I will be in P.C.Fla. on The 20th of Oct. Moving into the house on the 22nd..

Cool! Once you get moved in and settled, send me a PM and we'll get together!

[Divecoz]

Cool.... Sounds like a plan ..I sent you a PM..

I will be in P.C.Fla. on The 20th of Oct. Moving into the house on the 22nd..

Cool! Once you get moved in and settled, send me a PM and we'll get together!

[DaveB]

Divecox,
Maybe you can join us (WCTSS) for the Cayo Costa Cruise Nov.16-18th.
We have at least 20 boats of all kinds and a few Mac's.
We anchor or beach at the Northern Sand bar inside cove at Pelican Bay, bonfire and great people.

http://members.ij.net/wctss/wctss/dates.htm

Dave

Viz I guess I wrote it poorly.
I get the anchor snubber idea. I just never had "luck" with those round bottom Mushrooms doing anything but dragggging as an anchor..
I will be in P.C.Fla. on The 20th of Oct. Moving into the house on the 22nd..

Divecoz, I think you missed the points...there were two conversations being had at the same time...

Conversation One:
Attaching the mushroom anchor to the chain/rode interface acts as a snubber. As the boat moves back and tensions the rode, it has to lift that mushroom anchor off the bottom just by the tension in the rode. The tension needed to lift that mushroom anchor, and the amount of line that goes from angled to straight, works like the rubber snubber in your system. The explanation of the Sentinel is the same functionally, but the smaller weight is lowered straight down from the bow of the boat, not out at the chain/rode interface.

Conversation Two:
Cat uses the mushroom anchor off the stern to cut down on the swing. He was just explaining a second use for the same mushroom anchor as justification for having it aboard. Cat was not saying that having it attached to the chain/rode interface cuts down on swing at anchor...

Sooooo when are you getting down here?? Where are you landing?

[Divecoz]

We would love to DaveB but I am sure we will be in Full Blown Frantic Mode getting the remodel done before Christmas..

[chuck]

DaveB,
I use a snatch block and line to lower my 10 lb weight where I want it. Part way or all the way down. I pull it up when I am ready to move. That way I do not have to lift all that weight when lifting the anchor. At 77 that is important.

Chuck

Chuck,
Useing a small (5-8 lb) rubber coated mushroom anchor at the rope to chain splice with 30 ft. of chain will give you a much better shock and holding power in heavy wind & waves. I assume this is much like you mentioned. The rubber coated will save deck damage.
Dave

A Sentinel is a big help when you do not have enough chain. I use one in the San Juans and Puget Sound all the time.

"Using an anchor weight, kellet or sentinel

Lowering a concentrated, heavy weight down the anchor line – rope or chain – directly in front of the bow to the seabed, behaves like a heavy chain rode and lowers the angle of pull on the anchor.[23] If the weight is suspended off the seabed it acts as a spring or shock absorber to dampen the sudden actions that are normally transmitted to the anchor and can cause it to dislodge and drag. In light conditions, a kellet will reduce the swing of the vessel considerably. In heavier conditions these effects disappear as the rode becomes straightened and the weight ineffective. Known as a "anchor chum weight" or "angel" in the UK"

Chuck

[DaveB]

Chuck,
That is a normal way to retrieve the mushroom. One can haul up that line useing the jib sheet winch. un hook when it is at bow reach,unhook than haul in the anchor line.
I didn't explain how it was to be used as there are other options.I just wanted to explain the basics.
I like to attach the mushroom to the 3-4th link from the rope to chain splice and only use this in very heavy waves , poor holding ground and heavywind and that is very rare.This is useing proof Coil Chain, if useing BBB chain the links are to short for atachment and one needs a thimbel for rope to chain were the mushroom attaches. Rope to chain splice usually occures if you have a windlass.
Hauling the mushroom anchor directly to the chain is not much more than hauling your regular anchor up, just 5 lbs more.That way you don't need a seperate retriving line.
This mushroom anchor is not a anchor, it simply gives much more leverage on the chain to give the anchor more dig in and shock resistance.
Dave

DaveB,
I use a snatch block and line to lower my 10 lb weight where I want it. Part way or all the way down. I pull it up when I am ready to move. That way I do n ot have to lift all that weight when lifting the anchor. At 77 that is important.

Chuck

Chuck,
Useing a small (5-8 lb) rubber coated mushroom anchor at the rope to chain splice with 30 ft. of chain will give you a much better shock and holding power in heavy wind & waves. I assume this is much like you mentioned. The rubber coated will save deck damage.
Dave

A Sentinel is a big help when you do not have enough chain. I use one in the San Juans and Puget Sound all the time.

"Using an anchor weight, kellet or sentinel

Lowering a concentrated, heavy weight down the anchor line – rope or chain – directly in front of the bow to the seabed, behaves like a heavy chain rode and lowers the angle of pull on the anchor.[23] If the weight is suspended off the seabed it acts as a spring or shock absorber to dampen the sudden actions that are normally transmitted to the anchor and can cause it to dislodge and drag. In light conditions, a kellet will reduce the swing of the vessel considerably. In heavier conditions these effects disappear as the rode becomes straightened and the weight ineffective. Known as a "anchor chum weight" or "angel" in the UK"

Chuck

[DaveB]

Thats the reason you should come. I am FL. State Certified Contractors Lic. And State Certified Building Inspector. You can tell me your problems over a hot spit fire with Vitals & Grog.
Dave

We would love to DaveB but I am sure we will be in Full Blown Frantic Mode getting the remodel done before Christmas..

[Boblee]

Got a rubber snubber but only use it on the dinghy towing rope, for anchoring use either one or two anhors both on 3/8" rope and 20 ' of 5/16" gal chain, depending on bottom which anchor is used if only using one but in windy or heavy tides or currents will use both the Rocna and the Sarca.
https://www.whitworths.com.au/main_item ... lutePage=1
In certain conditions usually at 1 am have had to deploy a bridle to keep the nose pointed into swell so we could get sleep but much better to select a quieter anchorage if possible.
Here is one where we got caught after knowing better when told it was a rough anchorage and it was until the tide changed (8m tide).

[Russ]

Love the picture, says a thousand words.

I'm not comfortable with #1 and #3 above. If you have had success with it then go for it. Too much "stuff" close to the anchor to get tangled if the tide/wind changes. Typically at night, winds die and the boat goes totally slack on the rode. Winds often switch direction 180 degrees or so and I would be concerned about wrapping all that stuff up in the anchor. Chain alone seems to roll over the anchor and it resets.

Now #2 can be controlled by lowering the mushroom just above the bottom so it's out of harms way. This one seems the safest to me.

Frankly, 20' of chain is pretty heavy and hard to lift off the bottom if you have a lot of scope out.
The snubber has the anti-shock qualities, but so does a length of nylon rode. I'm having trouble understanding how it helps keep the chain on the bottom.


And tossing a mushroom off the stern probably works best in certain dragging on the bottom conditions. In the morning, you pull it up and find some clams for breakfast.

[DaveB]

Russ,
The 2nd picture is the one to use, the small muchroom 5 lb is atached to the rope/chain eye or to the chain with a quick release eye.
Like I said in previous post. This is used for heavy wind or poor holding ground .
When in doubt anchoring over night use this as a safe guard. This also can be used in a tight ancorage area were boat swings much closer for smaller diamiter so on doesn't need a second anchor for a Bahimian Moor.
Dave

Love the picture, says a thousand words.

I'm not comfortable with #1 and #3 above. If you have had success with it then go for it. Too much "stuff" close to the anchor to get tangled if the tide/wind changes. Typically at night, winds die and the boat goes totally slack on the rode. Winds often switch direction 180 degrees or so and I would be concerned about wrapping all that stuff up in the anchor. Chain alone seems to roll over the anchor and it resets.

Now #2 can be controlled by lowering the mushroom just above the bottom so it's out of harms way. This one seems the safest to me.

Frankly, 20' of chain is pretty heavy and hard to lift off the bottom if you have a lot of scope out.
The snubber has the anti-shock qualities, but so does a length of nylon rode. I'm having trouble understanding how it helps keep the chain on the bottom.


And tossing a mushroom off the stern probably works best in certain dragging on the bottom conditions. In the morning, you pull it up and find some clams for breakfast.