Daggerboards - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 18 Old 10-15-2006 Thread Starter
Junior Member
 
Join Date: Oct 2006
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Daggerboards

I'm thinking about sailing a catamaran with daggerboards. Someone offhandedly remarked that daggerboards are "noisy". Does anyone know what they are referrring to (as I have never sailed on a boat using them). Is this "noise" something associated with travel above a certain speed, or is it a constant, or does it even exist?
practicalfocus is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 18 Old 10-16-2006
Banned
 
Rickm505's Avatar
 
Join Date: Sep 2005
Location: Central Florida
Posts: 770
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Yeah, he could have meant that they're real noisy when barnacles have invaded the housings, and clog the the opening, effectively jamming them so they won't move.

Or he could have meant that they're noisy when you hit a sand bar with them down and snap one off.

On the other hand , he could have meant that in a major gust or heavy weather, the leeward board digs in, the boat doesn't slide and over she goes.

Do they still sell cats with daggerboards?

Rick in Florida

Rick in Florida
Rickm505 is offline  
Quote Quick Reply Share with Facebook
post #3 of 18 Old 10-16-2006
Senior Member
 
Chuteman's Avatar
 
Join Date: May 2006
Location: SF Bay Area, CA
Posts: 221
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Did Not Hear Any

PF:
Sailed on a Gemini 105 twice this summer...............no noise heard. Although the controls & "sleeves" are inside the cabin & we were outside in the cockpit.
Skipper chose not to adjust on each tack = just left same one down during sail

Don't know if Rick's comment was tongue in cheek.......but even big Catanas have daggerboards
Chuteman is offline  
Quote Quick Reply Share with Facebook
post #4 of 18 Old 10-19-2006 Thread Starter
Junior Member
 
Join Date: Oct 2006
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks!

Wow, sounds like Rick has experienced or heard of some unpleasant experiences with daggerboards. The cat involved is a Catana. I understood them to contribute to the "safety" aspect of sailing. Any thoughts?
practicalfocus is offline  
Quote Quick Reply Share with Facebook
post #5 of 18 Old 10-20-2006
Senior Member
 
Chuteman's Avatar
 
Join Date: May 2006
Location: SF Bay Area, CA
Posts: 221
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Better Not

PF: Given the cost & advertising Catana's boards should be perfect.
Here's their blurb on safety
http://www.catana.net/frameset.php?p...&lang=us&rub=3
Chuteman is offline  
Quote Quick Reply Share with Facebook
post #6 of 18 Old 10-20-2006 Thread Starter
Junior Member
 
Join Date: Oct 2006
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks Chuteman!
practicalfocus is offline  
Quote Quick Reply Share with Facebook
post #7 of 18 Old 10-22-2006
Banned
 
Rickm505's Avatar
 
Join Date: Sep 2005
Location: Central Florida
Posts: 770
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
My comments were only slightly tongue in cheek. Gemini 105's have a history of capsizing. Another one went over off the coast of Jacksonville FL this past summer, in a squall.

Arguments have been made that when weather get's nasty, just lift the boards to stay our of harms way.

Anyone who has actually 'been there' knows that when things go bad, it happens all at once with little time to react. The 'just lift the dagger boards' comments are made by armchair pundits, not by sailors.

Boats with dagger boards point higher and perform better. No argument. They are also inherently dangerous on a light boat, slightly more stable in a heavier boat.

Happily sans daggerboards
Rickm505 is offline  
Quote Quick Reply Share with Facebook
post #8 of 18 Old 10-22-2006
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
BTW, Geminis don't have daggerboards. They have centerboards, which are a very different beastie... but perform much the same function. The major difference is that daggerboards generally do not swing up in the case of an impact or grounding, centerboards can, and if properly designed will generally be far more forgiving in such an occurrence. Centerboards can also be used to help balance weather helm on a boat, by varying the depth they are lowered. The more they are lowered, the further forward the CLR moves.

Having the ability to retract the dagger/centerboard allows a cat to slip more easily, and not trip over the keels, that are found on some other catamaran designs, in heavy weather.

Rick- I'd be interested in seeing the articles or links you have about Geminis capsizing. I don't believe they have any more a history of it than any other catamaran, especially given that they have one of the largest production bases of any catamaran ever built, with somewhere around 900 currently out there.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #9 of 18 Old 10-22-2006
Banned
 
Rickm505's Avatar
 
Join Date: Sep 2005
Location: Central Florida
Posts: 770
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
I'm not sure about that. There were about 400-500 of my boat manufactured with an excellent safety record. The same could be said for other British Cats .. ie.. Heavenly Twin and Prout. The only Prouts that 'triped' were modified for racing with a much taller mast. I think there were 2. Granted these are older, and heavier designs, all of which have circumnavigated. I don't believe I've read about any dagger/centerboard cat that has.

As for the last Gemini article, I read it in Florida Today, a Florida daily paper. There were two articles on it. The first reporting what happened and the 2nd giving more details about the rescue and the boat, which washed up on a Jacksonville beach.

If it sounds like I'm picking on Gemini's, I'm not. This is a discussion about boats with boards!!

Rick in Florida
Rickm505 is offline  
Quote Quick Reply Share with Facebook
post #10 of 18 Old 10-22-2006
Senior Member
 
Chuteman's Avatar
 
Join Date: May 2006
Location: SF Bay Area, CA
Posts: 221
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Knowledge Is Good

Learn lots of stuff everyday........add one more for today.
As I was saying, the Centerboards did not make any noise.

Here's a link that helped = it had a diagram....pictures always help me.
http://www.geminicatamarans.com/Perf...nterboards.htm

Back to monohulls & keels
Chuteman is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome