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Old 06-27-2013
MarkofSeaLife
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Re: Anchor Setting Woes

Quote:
Originally Posted by engineer_sailor View Post

We are in the Chesapeake (read: mud) and use a Danforth as our primary. 30 ft of chain and usually at least 5:1 scope

Josh
That means you are anchoring in 4 feet of water.

30 feet chain less 6 feet water to bow roller = 24 feet
24/5 = 4.8

Basically you are not using all chain you must be using rope rode. Rope will never keep your boat secure IMHO.

I have 330 feet of chain and if I anchor in the minimum I could, 6 feet, I would put out 30 feet of chain and then my scope calculation 3 x 6 = 18 then the 6 feet to the bow roller. Total 54 feet all chain. Then add any tide allowence.

When I say I put out 10 meters/30 feet before my scope calculation: I fnid this is a small but essential blob of chain I use in any shallow water. My current anchoring situation is:
Depth 9.5 meters
Water to bow roller 2 meters
Tide: nothing, maybe a foot
Scope Nominal 3:1 no storms predicted etc

11.5 meters x 3 = 34.5
Actual chain out 44 meters

Converted:
Depth 31 feet
Water to bow roller 6 meters
Tide: nothing, maybe a foot
Scope Nominal 3:1 no storms predicted etc

38 feet x 3 = 113 feet
Actual chain out 144 feet

Sea Life