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Why need anchor chain?
My friend told me to use Anchor chain to attach between the anchor and the
rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
Why need anchor chain?
see http://www.johnsboatstuff.com/Articles/anchor.htm for an explanation
or http://www.westmarine.com/webapp/wcs...nchorrodes.htm |
Why need anchor chain?
The chain protects you in case you've dropped the anchor near something
which could cut the rope, like a rock or some sort of metal garbage. Since an anchor could save your life under certain circumstances, the chain is VERY cheap insurance. "Ivan Yonge" wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
Why need anchor chain?
On Mon, 03 May 2004 14:07:54 GMT, "Ivan Yonge"
wrote: My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks Chain serves a dual purpose: It prevents chafe on the rode as it scrapes along the bottom. It adds to the ability of the anchor to remain set by providing extra weight and by adding some shock absorbing. Jack __________________________________________________ Jack Dale Swiftsure Sailing Academy Director/ISPA and CYA Instructor http://www.swiftsuresailing.com Phone: 1 (877) 470-SAIL (toll free) __________________________________________________ |
Why need anchor chain?
.....and due to its weight, it can also reduce the angle between the rode and
the sea/lake bed, which will help the anchor "bite" better. I've read this, but I'm not sure how important it really is. Probably depends on the prevailing conditions when you first drop anchor. "Ivan Yonge" wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
Why need anchor chain?
...and due to its weight, it can also reduce the angle between the rode and
the sea/lake bed, which will help the anchor "bite" better. I've read this, but I'm not sure how important it really is. Critical. |
Why need anchor chain?
"Gould 0738" wrote in message ... ...and due to its weight, it can also reduce the angle between the rode and the sea/lake bed, which will help the anchor "bite" better. I've read this, but I'm not sure how important it really is. Critical. I wondered about it because (at least in my imagination), you could anchor in a VERY stiff wind, which might straighten the rode so quickly that the chain might not have the time to achieve the smaller angle. Who knows.... Back to my boring sandwich. Yawn........ |
Why need anchor chain?
"Harry Krause" wrote in message
news:c3dhc2g=.2d69cea291ff00a9a27a6790524776f5@108 3604031.nulluser.com... FredB wrote: see http://www.johnsboatstuff.com/Articles/anchor.htm for an explanation or http://www.westmarine.com/webapp/wcs...nchorrodes.htm A reason some may not think of... Chain adds to the weight of your anchor, so to speak, so if you are anchoring in an area with wind or current, and you want to get the anchor down to the bottom as quickly as possible so you end up anchored near where you want to be, the chain helps sink the anchor, especially if you are using a Danforth-style anchor. Also: If you keep some very large plastic wire ties aboard, like the police sometimes use in place of handcuffs, the chain provides a convenient series of holes to which you can attach passengers who have become a problem. "We've been fishing for almost 1/2 hour. When can we go home?" Dunk. |
Why need anchor chain?
These are very good articles, thanks Simon "FredB" wrote in message news:iNslc.355980$oR5.42842@pd7tw3no... see http://www.johnsboatstuff.com/Articles/anchor.htm for an explanation or http://www.westmarine.com/webapp/wcs...nchorrodes.htm |
Why need anchor chain?
"Doug Kanter" wrote in message ... The chain protects you in case you've dropped the anchor near something which could cut the rope, like a rock or some sort of metal garbage. Since an anchor could save your life under certain circumstances, the chain is VERY cheap insurance. I just lost a nice Fortress anchor yesterday because I don't think I had enough chain on the line while trying to use an Anchor buoy retrieval system. I started powering forward at a 30 degree angle to the line/anchor, and the buoy normally pops it loose. In this case, the line apparently dragged across some of the sharp relief (rocks ?) on the bottom and cut through the rope like butter. I had on about 10 feet of chain...and now wish it was 15 feet. |
Why need anchor chain?
"Doug Kanter" wrote in message ... ....and due to its weight, it can also reduce the angle between the rode and the sea/lake bed, which will help the anchor "bite" better. I've read this, but I'm not sure how important it really is. Until I lost that anchor yesterday, I thought your aforementioned reason was *the* most important reason for rode. Now I see both reasons (prevent strafe and reduce the pulling angle) are equally important. |
Why need anchor chain?
NOYB wrote:
I just lost a nice Fortress anchor yesterday because I don't think I had enough chain on the line while trying to use an Anchor buoy retrieval system. Good Lord! NOYB, you own a boat? :-) The Rulers of Thumb say the minimum amount of chain should be at least equal to the LOA of your boat. Step up. That "extra" chain won't cost anywhere nearly as much as the Fortress you just lost. |
Why need anchor chain?
Until I lost that anchor yesterday, I thought your aforementioned reason was
*the* most important reason for rode. Now I see both reasons (prevent strafe and reduce the pulling angle) are equally important. The more chain you use, the less scope you will need in almost any situation. If you routinely anchor in relatively deep or crowded areas where 5 to 1 is impractical, an all-chain rode will often hold as well at 3 to 1 as a rope rode will at 5. The extra weight of the chain keeps a shock absorbing "belly" in the rode to help resist pullout, in addition to a more horizontal, (less vertical) pull on the anchor once it is set. |
Why need anchor chain?
"Gould 0738" wrote in message
... Until I lost that anchor yesterday, I thought your aforementioned reason was *the* most important reason for rode. Now I see both reasons (prevent strafe and reduce the pulling angle) are equally important. The more chain you use, the less scope you will need in almost any situation. If you routinely anchor in relatively deep or crowded areas where 5 to 1 is impractical, an all-chain rode will often hold as well at 3 to 1 as a rope rode will at 5. The extra weight of the chain keeps a shock absorbing "belly" in the rode to help resist pullout, in addition to a more horizontal, (less vertical) pull on the anchor once it is set. Gould, I don't care WHAT we might've said about you while you were gone from this NG. You're not dumb, smelly or ugly. You just gave me a great idea. I need more weight in the front of my 14' yacht when I'm the only one in it, or the bow catches the wind, causing the boat to do some very interesting things. I wonder how much chain would weigh 28 lbs, same as my battery, which when placed in the bow for experimental purposes, added just enough weight to level things nicely. |
Why need anchor chain?
things. I wonder how much chain would weigh 28 lbs, same as my battery,
which when placed in the bow for experimental purposes, added just enough weight to level things nicely. 14' boat..... 3/8" chain= 10 ' weighs about 4 pounds. You could put 70' of chain up there to duplicate your 28 pound battery. 1/2" chain= 10' weighs about 6 pounds. Call it 50', a pound or two one way or the other won't matter. |
Why need anchor chain?
3/8" chain= 10 ' weighs about 4
OOPS. Make that 3/16", not 3/8. Obviously 3/8 would be heavier than 1/4". A 10 foot length of 3/8" chain weighs about 14 pounds. You'd only get 20 feet. Not enough. |
Why need anchor chain?
"Gould 0738" wrote in message ... 3/8" chain= 10 ' weighs about 4 OOPS. Make that 3/16", not 3/8. Obviously 3/8 would be heavier than 1/4". A 10 foot length of 3/8" chain weighs about 14 pounds. You'd only get 20 feet. Not enough. Hmm. Maybe just a bag of sand. 50' of chain...bulky. Or, new boat. |
Why need anchor chain?
Hmm. Maybe just a bag of sand. 50' of chain...bulky.
I am willing to guarantee that the chain will be of greater usefulness when anchoring than would a bag of sand. :-) |
Why need anchor chain?
NOYB wrote in message ink.net... I just lost a nice Fortress anchor yesterday because I don't think I had enough chain on the line while trying to use an Anchor buoy retrieval system. I started powering forward at a 30 degree angle to the line/anchor, and the buoy normally pops it loose. In this case, the line apparently dragged across some of the sharp relief (rocks ?) on the bottom and cut through the rope like butter. I had on about 10 feet of chain...and now wish it was 15 feet. As they advise in the power Squadron courses...the anchor chain length should be equal to your boat LOA. |
Why need anchor chain?
"Gould 0738" wrote in message ... Hmm. Maybe just a bag of sand. 50' of chain...bulky. I am willing to guarantee that the chain will be of greater usefulness when anchoring than would a bag of sand. :-) True. I have to take a peek at the chain in question, and visualize whether it'll even fit into the space ahead of the front bench seat. It's wasted space anyway, but I can't have the chain piled so high that there's no room for the anchor. It's an oversized anchor for this boat. Perch get really excited here when there are small craft warnings. Theories abound. |
Why need anchor chain?
"Gould 0738" wrote in message ... NOYB wrote: I just lost a nice Fortress anchor yesterday because I don't think I had enough chain on the line while trying to use an Anchor buoy retrieval system. Good Lord! NOYB, you own a boat? :-) The Rulers of Thumb say the minimum amount of chain should be at least equal to the LOA of your boat. Step up. That "extra" chain won't cost anywhere nearly as much as the Fortress you just lost. Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get away with a shorter rode? Remember, I don't have a windless. |
Why need anchor chain?
"Don White" wrote in message ... NOYB wrote in message ink.net... I just lost a nice Fortress anchor yesterday because I don't think I had enough chain on the line while trying to use an Anchor buoy retrieval system. I started powering forward at a 30 degree angle to the line/anchor, and the buoy normally pops it loose. In this case, the line apparently dragged across some of the sharp relief (rocks ?) on the bottom and cut through the rope like butter. I had on about 10 feet of chain...and now wish it was 15 feet. As they advise in the power Squadron courses...the anchor chain length should be equal to your boat LOA. Most of the time I'm fishing reefs in water shallower than the length of my boat. I was tarpon fishing in 19 feet on Sunday when I lost my anchor. I'd have mostly chain out rather than rope. 25 feet seems like a lot of chain for a 5000 lb. 25' center console with a cuddy. |
Why need anchor chain?
Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get
away with a shorter rode? Remember, I don't have a windless. If you have a 25' boat, you should be able to get by with 1/4" chain. 25-feet would weigh about 15 pounds. You probably catch, or hope to catch, fish heavier than that. Since the "get by" is 1/4 inch, you might want to step up to 5/16 or 3/8. 5/16 will weigh about 10 pounds for ten feet, so your chain would weigh 25 pounds. 3/8 will weigh about 14 pounds per ten feet, so your chain would weigh 35 pounds. |
Why need anchor chain?
Famous last words......
Most of the time |
Why need anchor chain?
Gould 0738 wrote:
Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get away with a shorter rode? Remember, I don't have a windless. If you have a 25' boat, you should be able to get by with 1/4" chain. 25-feet would weigh about 15 pounds. You probably catch, or hope to catch, fish heavier than that. Since the "get by" is 1/4 inch, you might want to step up to 5/16 or 3/8. 5/16 will weigh about 10 pounds for ten feet, so your chain would weigh 25 pounds. 3/8 will weigh about 14 pounds per ten feet, so your chain would weigh 35 pounds. I only have a six foot chain on the Parker 25. Lots of times I anchor in shallow water, and I don't like the "all chain rode" a 25' chain would give me. |
Why need anchor chain?
Gould
Could I get an estimate of chain needed for my 31 foot ChrisCraft, all wood, approximately 10,000 lbs. Still finishing everything on it, hoping to be able to launch in June. http://www.wildhorse-webdesign.com/boat "Gould 0738" wrote in message ... Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get away with a shorter rode? Remember, I don't have a windless. If you have a 25' boat, you should be able to get by with 1/4" chain. 25-feet would weigh about 15 pounds. You probably catch, or hope to catch, fish heavier than that. Since the "get by" is 1/4 inch, you might want to step up to 5/16 or 3/8. 5/16 will weigh about 10 pounds for ten feet, so your chain would weigh 25 pounds. 3/8 will weigh about 14 pounds per ten feet, so your chain would weigh 35 pounds. |
Why need anchor chain?
The weight of the chain acts as a shock absorber and the length should be
minimum the length of the boat ... 18' boat, 18' chain. Ivan Yonge wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
Why need anchor chain?
On Mon, 03 May 2004 22:14:17 GMT, "NOYB" wrote:
Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get away with a shorter rode? Remember, I don't have a windless. ================================================== 1/4 inch chain should be more than enough, less than 20 pounds, OK if you have a good bow roller and a half decent back. |
Why need anchor chain?
"NOYB" wrote in message ink.net... Most of the time I'm fishing reefs in water shallower than the length of my boat. I was tarpon fishing in 19 feet on Sunday when I lost my anchor. I'd have mostly chain out rather than rope. 25 feet seems like a lot of chain for a 5000 lb. 25' center console with a cuddy. Even just dropping an anchor for fishing in 19 feet of water you'd probably want a 3:1 ratio. That's at least 60 feet of rode. We always put out 5:1 for the 9500 lb mirage 33 I sail on. On 100 ft of rode...the 33 feet of chain doesn't seem so bad. When I pick up my Sandpiper 565 this weekend, (I hope) I'll be putting 19 feet of chain and about 100 feet of line on the anchor. Since the boat has a retractable keel, I can anchor in shallow water. |
Why need anchor chain?
I only have a six foot chain on the Parker 25. Lots of times I anchor in
shallow water, and I don't like the "all chain rode" a 25' chain would give me. Unless you're in less than 8 feet of water, you should have some rope out as well. Even at a short 3 to 1 scope, in 9 feet of wtaer you'd have 27 feet of rode deployed...actually more if you follow good practice and take the distance between the bow roller and the surface into account as well as the depth. |
Why need anchor chain?
Gould
Could I get an estimate of chain needed for my 31 foot ChrisCraft, all wood, approximately 10,000 lbs. If it were mine, I'd use at least 30 feet of 1/2" chain, but you might "squeak by" with 3/8. 3/8 weighs about 14 pounds per ten feet. 1/2 weighs about 26. That said, there are other factors to consider. Where do you plan to anchor? If a lot of the prospective anchorages are fairly deep, or crowded, you will want to use significantly more chain so that you're not swinging a mile with every little shift in the wind or current. One of the big advantages of more chain is that it your hook will continue to hold at low scope levels that would fail in an all rope approach. Out where I boat, we get 13-14 foot tide changes fairly routinely. Takes a bit of noodlin' and a little more scope to be prepared for the impending additional depth when anchoring at low tide. "Chain" is not always chain. You're likely to have a windlass on a 30-footer, so make sure you get a chain with properly configured links. Some chains, (BBB for example), seem to mate up with the gypsy more accurately. |
Why need anchor chain?
On Mon, 03 May 2004 22:17:04 GMT, "NOYB" wrote:
25 feet seems like a lot of chain for a 5000 lb. 25' center console with a cuddy. ====================================== It is a lot for casual anchoring, about right for overnight, unattended, or storm conditions. For fishing or a lunch hook, 4 to 6 feet of chain would be typical on a 24 footer. |
Why need anchor chain?
|
Why need anchor chain?
Gould 0738 wrote:
I only have a six foot chain on the Parker 25. Lots of times I anchor in shallow water, and I don't like the "all chain rode" a 25' chain would give me. Unless you're in less than 8 feet of water, you should have some rope out as well. Even at a short 3 to 1 scope, in 9 feet of wtaer you'd have 27 feet of rode deployed...actually more if you follow good practice and take the distance between the bow roller and the surface into account as well as the depth. In terms of anchor rode scope, there are many times in which practicality trumps "good practice." The amount of line I let out depends upon the weather, current and tide conditions, the bottom, the closeness of other boats or more solid objects, et cetera. |
Why need anchor chain?
Gould
Thanks for the info... I'll be anchoring only in temporary locations off the coast of Florida. Mainly just when out to cruise, all other times she will be tied off in a marina. No windlass installed on her, but she does have a rather large anchorage locker for chain stowage. It appears, from the original equipment found onboard, that it was originally set up with about 1/2 inch rope as the anchor line. Keeps everything interesting, trying to locate what was supposed to be there as I get the restoration completed. "Gould 0738" wrote in message ... Gould Could I get an estimate of chain needed for my 31 foot ChrisCraft, all wood, approximately 10,000 lbs. If it were mine, I'd use at least 30 feet of 1/2" chain, but you might "squeak by" with 3/8. 3/8 weighs about 14 pounds per ten feet. 1/2 weighs about 26. That said, there are other factors to consider. Where do you plan to anchor? If a lot of the prospective anchorages are fairly deep, or crowded, you will want to use significantly more chain so that you're not swinging a mile with every little shift in the wind or current. One of the big advantages of more chain is that it your hook will continue to hold at low scope levels that would fail in an all rope approach. Out where I boat, we get 13-14 foot tide changes fairly routinely. Takes a bit of noodlin' and a little more scope to be prepared for the impending additional depth when anchoring at low tide. "Chain" is not always chain. You're likely to have a windlass on a 30-footer, so make sure you get a chain with properly configured links. Some chains, (BBB for example), seem to mate up with the gypsy more accurately. |
Why need anchor chain?
"NOYB" wrote in message ink.net... Gulp! 25 feet of chain? What diameter? Can you use a heavier chain to get away with a shorter rode? Remember, I don't have a windless. "Rules of thumb" have their use, but they also have their limits. As other people have pointed out, one primary reason for chain is that it is much more resistant to abrasion, which is really important if you anchor in coral or rocky areas. For sandy or muddy bottoms it is not so important. Another reason for chain is that it makes the pull on the anchor more horizontal. If you had no chain at all, when the boat pulled on the anchor line it will straighten the line out between the boat and the anchor. The angle you see the rope entering the water will be essentially the same as the angle it is at when it reaches the anchor. The more vertical this angle is the more it will want to pull the anchor UP instead of setting it deeper. With chain, the weight of the chain will hold the line down. If you have sufficient chain and sufficient scope you will never lift all the chain off the bottom, and thus the pull on the anchor will always be horizontal. This will make the anchor set deeper when it drags. One way to achieve the same effect is to use a "caternary weight", which is simply a heavy weight that is hanging from your anchor line between the boat and the anchor. This pulls the rope down so that the pull on the anchor is more horizontal. This is all great and wonderful if you need to a good secure anchor. If you are just dropping the hook for lunch or a little fishing and will be observing your position all the time then you can usually get by with lots less. Chain is a real bitch when you don't have a windlass and can be a safety issue (it is a really bad idea to be handling chain under tension). If the chain is longer than the water is deep then you may have to deal with freeing a stuck anchor without being able to cleat it off. With rope it is simple, you power up till you are over the anchor, cleat off the line and then use the boat to power the anchor up. If you have reached the chain when you are above the anchor then you need to have a hook handy so that you can fasten the chain. Rod |
Why need anchor chain?
Bowgus is correct. the chain is a shock absorber. and the
anchor rope should be 7 times the depth of the water. Capt. boots "Bowgus" wrote in message ble.rogers.com... The weight of the chain acts as a shock absorber and the length should be minimum the length of the boat ... 18' boat, 18' chain. Ivan Yonge wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
great question!!
d "Ivan Yonge" wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks I.Y |
"djb" wrote in message .. . great question!! d "Ivan Yonge" wrote in message ble.rogers.com... My friend told me to use Anchor chain to attach between the anchor and the rope.. what is the reason? I was trying to search on Internet but couldn't find a good explanation. Can anyone tell me why please? thanks 1) It decreases the pulling angle on the anchor relative to the bottom, thus improving the the ability of the anchor to *bite* the bottom better. 2) It serves as a shock absorber, helping to absorb the boat's movement due to the wave action. 3) It provides abrasion resistance against sharp bottom structure. 4) It helps the anchor drop straight down, rather than "sailing" when there's a strong current. |
1) It decreases the pulling angle on the anchor relative to the bottom, thus
improving the the ability of the anchor to *bite* the bottom better. not really, except under lite wind conditions. Then it is true. |
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