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 Catalina/Capri 25/250 Sailor's Forums
 Catalina 250 Specific Forum
 Rocking at anchor		  New Topic  Topic Locked
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Northlander
1st Mate

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35 Posts
Initially Posted - 07/07/2005 :  15:08:02  Show Profile
Spent two nights on the hook over the 4th weekend. Had a great time. One thing I noticed was the amount Necia rocked while at anchor. I noticed other sail boats and even power boats did not rock as much. It was worst during light or no wind. She would get beam on to the little swells. The pendulum motion would start and sometimes get fairly severe. I'm wondering if any of you experienced this and what (if anything) you've done to prevent and/or compensate for it.

Thanks!
Chris
Necia
C250wk #804
Seward, AK
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Capt. Kurt
Navigator

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185 Posts
Response Posted - 07/07/2005 :  18:39:23  Show Profile
It sounds like the pendulum effect you experienced is what has been refered to as anchor hunt.

Here are some previous threads on the topic of using riding sails and bridles to minimize the effect.

http://catalina25-250.org/forum/topic.asp?TOPIC_ID=8836
http://catalina25-250.org/forum/topic.asp?TOPIC_ID=8701

Kurt
#818 C250WK 'Tortuga'
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Northlander
1st Mate

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35 Posts
Response Posted - 07/07/2005 :  19:08:31  Show Profile
If I understand anchor hunt correctly, it's a swing from one tack to another while riding on the anchor. I experienced somethig different. The boat wasn't moving...it was stationary just rocking (heeling) back and forth.
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River Harley
Navigator

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132 Posts
Response Posted - 07/07/2005 :  22:41:15  Show Profile
Does anyone have a photo or diagram of the anchor rode bridle configuration? I'm a visual type person.

River
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Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts
Response Posted - 07/09/2005 :  11:41:05  Show Profile  Visit Arlyn Stewart's Homepage
When the 250 or any sailboat gets beam onto the swell... it will roll. The goal then is to prevent the boat from getting beam on. If the swell is coming from the direction of the wind... then it can be dealt with by using a riding sail and anchor rode bridle but in the case described where the wind is light... the answer is probably the use of double ground tackle... setting the anchors is such a way to keep the beam off the swell.
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Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts
Response Posted - 07/09/2005 :  11:46:44  Show Profile  Visit Arlyn Stewart's Homepage
River, my [url="http://www.stewartfam.net/arlyn/bridle.html"]anchor bridle[/url] technique
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Tom Potter
Master Marine Consultant

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USA
1913 Posts
Response Posted - 07/09/2005 :  11:54:04  Show Profile
Here's a picture of my anchor riding sail. Made it using a kit ordered form Sailrite.
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 07/09/2005 :  14:59:33  Show Profile
Hi Chris... Arlyn's comment about keeping the bow into the swell is the key, but in no wind, boats seem to like to line up beam to the waves. Also, boat wakes can come from anywhere and cause at least temporary rolling. West and others sell gizmos that look like several stacked mushroom anchors (but lighter), designed to be hung over the sides to act as dampers to a rolling motion. You might be able to concoct something similar but cheaper. It probably won't stop rolling altogether, but it will help stop it more quickly.
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Northlander
1st Mate

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35 Posts
Response Posted - 07/17/2005 :  13:45:04  Show Profile
Been away for a week...thanks, guys.
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tmhansen
Captain

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USA
397 Posts
Response Posted - 07/22/2005 :  00:52:20  Show Profile  Visit tmhansen's Homepage
Arlyn, thanks for sharing that idea previously. It took me several tries to get the bight on the anchor line long enough the first time we tried it. We used it this summer when we rented a mooring for a week and discovered it had other advantages there as well. The loop was easy to snag with the boat hook and then to quickly secure to the bow cleat. Then we could take our time adjusting the other side. In Morro Bay when the tide is flowing its nice to be able to quickly secure the boat.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.