Originally Posted by Simi 60
Noticed the 20mm nylon anchor snubber looking a bit weird.
This is the short daily use one, not the rarely used storm snubber.
Slid the protective chafe tube back and found this.
Rope is still clearly in good condition appearance wise, protected from sun and hose has not chafed through.
It's a new one for me, never seen Nylon do this before.
I spliced this one in Feb 2021
Need to replace more often it would seem.
Tension on an anchor rode at the bow will vary widely.
As the boat swings left and right, the extreme maximums will be met.
Then the minimum will be in between the two.
Whether we are trying to reduce:
- chafe on the line, OR
- "temperature" of the rode (wet or dry) taking a sharp turn
- loads upon the cleats or windlass and rode (which fail at extreme maximums)
... The concept of increasing "stretch" (to me) has merit... it should not be discounted. The "average" load over time (minutes or hours) is the same... however the variability between measurable minimums and measurable maximums will be reduced significantly, WITH the presence of some stretch.
I think in some circles this is called DAMPENING effect.
Similar to a fuel gauge that is radically going up and down as the boat pitches and rocks... [physical or electronic] dampening makes the actual fuel gauge show the more accurate "average" level. Elasticity in the rode, similarly, brings the stresses and loads more to the "average" load than the extremes as a boat is swinging left and right due to current or wind or both.
I am not personally aware of any truly scientific research that compares the "all chain" rode WITH a stretchy snubber VS A some chain with some nylon rode (at different proportions to evaluate best case scenario).
The heavier catenary
of all-chain rode to me introduces the equivalent of shock absorber characteristics, while also maximizing the chance that the anchor stays completely horizontal in its "angle of attack".
So, a snubber design with additional "shock absorption" characteristics has great merit, IMO.
The *most* important purpose of a snubber, most would agree is to "baby" the strains and stresses on the windlass. They are expensive to replace, and good examples of pain in the ass projects as well!
But, I say, let's not think adding elasticity "somehow" does not have value to minimizing the stresses on our vessel and its ground tackle system.