Keel bolts - SailNet Community
C27 Catalina 27 Owners Group Forum

LinkBack Thread Tools
post #1 of 3 Old 08-16-2013 Thread Starter
Senior Member
Join Date: Jan 2008
Posts: 149
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
Keel bolts

What's with the keel bolts on my Cat 27! I had stainless large keel bolts and nuts on my C&C 24 I recently sold and the ones on this boat are smaller, corroded steel and leaking from the bilge! Can't get a socket on the nuts. Can it be sealed from the outer keel or removed, replaced and resealed? Don't want to put tons of money in this 1977 boat!
ahab211 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 3 Old 10-25-2013
Senior Member
norahs arc's Avatar
Join Date: Jan 2013
Location: Saint John NB Canada
Posts: 140
Thanks: 12
Thanked 5 Times in 5 Posts
Rep Power: 3
Re: Keel bolts

Re C27 keel bolts, they are a weak point, just plain steel on mine and all are rusted and one broken off!!! The factory has a solution for the problem though. They recommend drilling new holes and installing lag screws. I think they specify stainless but I chose to use galvinize steel on my own boat (there is a reason).
Re the galvinize bolts - it's because stainless steel in a salt water enviroment without air can corrode and fail.
See Nigel Calder's "Boatowner's Mechanical and Electrical Manual - Third Edition.

The factory will send you the repair info on request. (+1-727-544-6684 Catalina Yachts)
Good luck and have fun sailing the boat.

Catalina 27 Aft. galley, dinnet L/O
Update - Sold Norah's Ark Buying A 24'Shark
Saint John NB

Last edited by norahs arc; 10-25-2013 at 09:03 AM.
norahs arc is offline  
Quote Quick Reply Share with Facebook
post #3 of 3 Old 10-27-2013
Senior Member
Join Date: Feb 2012
Location: New Orleans Louisiana
Posts: 2,480
Thanks: 7
Thanked 88 Times in 83 Posts
Rep Power: 4
Re: Keel bolts

Mild vs stainless keel bolts is a long running question in yacht design, with good designers falling on both sides of the question. Both camps have good arguments, and both have their weaknesses.

The one problem with making a switch from mild to stainless without redesign is that the strength of stainless is much lower than mild, and can lead to breakage.

Going the other way can have galvanic issues depending on the keel material, and installation method.

Presuming the builder has a recommendation I would follow it, or at least clear it past them before making the switch.

Greg Rubin
Stumble is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

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


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

Email Address:


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Keel Bolts Ajay73 Gear & Maintenance 53 02-06-2013 09:44 PM
C&C 121 Keel Bolts CarpenterSF C & C 0 10-10-2010 11:36 PM
C25 keel bolts Knotmee Catalina 2 03-03-2010 05:56 PM
keel bolts ahab211 Gear & Maintenance 13 11-04-2009 11:40 AM
why keel bolts? jbarros Boat Review and Purchase Forum 7 05-07-2003 06:02 AM

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

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