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Anchor for a 25 ft cdory
- Thread starter jkswor
- Start date
Rule of thumb regarding anchoring. Take a look at your ground tackle and identify it's weak spot. What ever that is, be it anchor, chain, shackle, or swivel, and remove it.
I know this info is 101 to you old salts, but it is hoped it will help new boaters or those with little anchoring experience.
Martin.
I know this info is 101 to you old salts, but it is hoped it will help new boaters or those with little anchoring experience.
Martin.
Micahbigsur@msn.com
New member
I never liked swivels over the decades of anchoring either but I no longer like having Dana dealing with twisted rode. I did like the 5/8" American made galvanized swivel we eventually tried on our big sailboat but an over strength galvanized swivel is to long on our little 25 for the anchor to stow against the roller.
I actually shudder at the sight of how badly designed or rigged virtually all the swivels in our marina are on boats I walk by.
Our Mantus swivel is well designed and is not a weak point as it is rated for boats up to around 40' as is the chain and nylon rode.
I think the 1/4 chain that normally comes on these boats could be more of a problem as chain is not good at at resisting sudden snatch tension. On the ranch over the years I have broken many chains under sudden load up to 5/8" so I don't trust it like stretchy nylon or even polyester when my life is on the line.
I actually shudder at the sight of how badly designed or rigged virtually all the swivels in our marina are on boats I walk by.
Our Mantus swivel is well designed and is not a weak point as it is rated for boats up to around 40' as is the chain and nylon rode.
I think the 1/4 chain that normally comes on these boats could be more of a problem as chain is not good at at resisting sudden snatch tension. On the ranch over the years I have broken many chains under sudden load up to 5/8" so I don't trust it like stretchy nylon or even polyester when my life is on the line.
The high test G4 1/4" chain SWL is 2600 lbs. Yield strength is 7800 lbs (Boater's Pocket Reference by Thomas McEwen--which every boater should have in his library).
I never let chain take shock load. Always use snubbers--if possible with enough elasticity/give to stretch several feet (for example I use 5/16" snubber with 1/2" nylon 8 plait rode.
I had also used the ACCO galvanized Swivel on larger boats, and it just didn't really swivel when under load in my experience.. The better ones have bearings, which allow swivel when under pressure.
Generally as you bring the chain up it will untwist, as well as let the natural twist in the lay of the 3 strand nylon re-apply.
I never let chain take shock load. Always use snubbers--if possible with enough elasticity/give to stretch several feet (for example I use 5/16" snubber with 1/2" nylon 8 plait rode.
I had also used the ACCO galvanized Swivel on larger boats, and it just didn't really swivel when under load in my experience.. The better ones have bearings, which allow swivel when under pressure.
Generally as you bring the chain up it will untwist, as well as let the natural twist in the lay of the 3 strand nylon re-apply.
Martin, we originally had an early version of a swivel. Can't even remember the brand as I bought it from a marine used parts store. Although it worked, the design without the small link of chain inserted, was a weak spot. After reading of failures of similar swivels, I eliminated it.
This Mantus swivel however rotates and has a built in shackle, so the stress shearing the pin or pins (from side-loading the swivel) is eliminated. Exactly what the small links of chain inserted would do.
https://youtu.be/k_DcEtcqcRU
This Mantus swivel however rotates and has a built in shackle, so the stress shearing the pin or pins (from side-loading the swivel) is eliminated. Exactly what the small links of chain inserted would do.
https://youtu.be/k_DcEtcqcRU
Micahbigsur@msn.com
New member
I know that new 1/4" G4 chain is adequate for a 25 but with wear and tear over time it doesn't have a lot of reserve and it is so light compared to 5/16 G4 wich has a working load of 3,900 lbs and ultimate load strength of 11,500 lbs, I think the extra weight on the shank really makes a difference with 50' of it and a 24 lb anchor and 7 to 1 depth we have never dragged.
We don't need a snuber like on our big boats with all chain, one of the advantages of the 9/16 nylon rode wich also has extra beef to resist chafe.
For Dana and I, our anchoring system is the most important system on our boats.
We never tie or run up on shore and some places like lake Mead and Baja can have marginal ground for anchoring and with the wind shifts can have a lee shore, we often like spots where few other people anchor and conditions are challenging.
I always liked the saying "if they don't laugh at the size of your anchor it is to small"!
We don't need a snuber like on our big boats with all chain, one of the advantages of the 9/16 nylon rode wich also has extra beef to resist chafe.
For Dana and I, our anchoring system is the most important system on our boats.
We never tie or run up on shore and some places like lake Mead and Baja can have marginal ground for anchoring and with the wind shifts can have a lee shore, we often like spots where few other people anchor and conditions are challenging.
I always liked the saying "if they don't laugh at the size of your anchor it is to small"!
Micahbigsur@msn.com":2wudifju said:I always liked the saying "if they don't laugh at the size of your anchor it is to small"!
Then I can say ours is Hunkydory.
I too have switched to the Mantus swivel.
Jay