Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-01-2013, 16:00   #1
Registered User

Join Date: Nov 2009
Location: Berkeley Marina - San Francisco, CA
Boat: Glastron Spirit 28 - 28ft - Sizzle
Posts: 4
Rafting two catamarans together

Hi there,

I searched for 'rafting' but couldn't find what I was looking for, so I'm trying out a post! Traveling to the caribbean this winter and will be traveling with another charter boat. My boat is a 47' and the other is a 43', both catamarans. I've rafted a cat and a monohull many times as well as two or more monohulls many times. Any special advice for rafting two cats together while at anchor?

I believe moorings are all designed for one boat, so I assume that rafting together on a mooring won't fly. Any thoughts there? (although my primary question is about rafting/anchoring together).

Techniques, do's, don'ts are all appreciated.

Thank you,

Erik
__________________

__________________
erikdj is offline   Reply With Quote
Old 08-01-2013, 16:25   #2
Registered User

Join Date: Jul 2006
Posts: 3,949
Re: Rafting two catamarans together

There can be problems with widely different freeboards and hull deadrise, meaning that sometimes the higher freeboard boat's rub rail is hitting the lifeline stanchions or even the stays on the other boat. Also, if your rub rails are too close together they can clash when there is wave action and cause damage. Obviously, the biggest fenders possible, and plenty of them, helps. At least you won't have the problem monos do of getting on opposite rolls and hitting masts and rigging.
__________________

__________________
Kettlewell Cruising
Kettlewell is offline   Reply With Quote
Old 08-01-2013, 16:47   #3
Registered User
 
Stingo's Avatar

Join Date: Aug 2005
Location: Cruising the seven seas
Boat: Maxim 380
Posts: 133
Send a message via Skype™ to Stingo
Re: Rafting two catamarans together

It's not a problem.
__________________
Stingo is offline   Reply With Quote
Old 08-01-2013, 17:28   #4
Registered User
 
Atlantic42's Avatar

Join Date: May 2009
Location: Alameda, California
Boat: Chris White Atlantic 42
Posts: 104
Images: 17
Re: Rafting two catamarans together


Lagoon 38 rafted to Atlantic 42 LightSpeed in Hot Springs Cove, British Columbia.

Rafting tips:

1). Instruct your crew to NOT put themselves between the boats while rafting. This is not the time for heroics like jumping or stretching too far.

2). Use lots of fenders and tie them to stantion bases or cleats not the lifelines.

3). Do raft where you are not likely to get hit by large power boat wakes.

4). Do offset the boats so the mast are not aligned. The goal is to eliminate the possibility of rigging hitting/tangling. This is most important if one of the boats is a monohull as a wake could cause the monohull to roll and swing the mast into the others rigging. I've seen a topping lift get broken this way and the boom fall into a cockpit of people= not good.

5). Do use long spring lines and breast lines. Lines tied directly between cleats on similar boats might be short leaving little line to stretch. Longer arrangement's take advantage of the stretchy shock absorbing nature of dock lines.

6). Tie up in such a way as either boat can untie without the help of the neighboring crew. Run lines to the neighbor boat around a cleat and back to your boat. This way you can slip your lines without having to board or wake the neighbors, perfect for an early morning start or a middle of the night anchor dragging situation.

7). If multiple boats will be rafted consider deploying multiple bow and stern anchors.
__________________
David Kane
www.dksail.com
Atlantic42 is offline   Reply With Quote
Old 08-01-2013, 17:41   #5
cruiser

Join Date: Dec 2011
Location: Key West FL - Burlington VT
Boat: O'day 32 CC Ketch
Posts: 493
Re: Rafting two catamarans together

I've recently become obsessed with round fenders. They seem to work better than the sausage style, as they are the choice of the commercial guys. My wife thinks im nuts for eventually spending $450ish to change over to five 18" round fenders. My old sausages are mis-matched, dirty, and old. But work fine, I just now want 5 new round fenders. Someone at dock said "naw ya gotta blow them up when you need them" My response "I'm a busy man and don't have time for that sh*t" as if I was breaking some yachtie code of fenders.
Go round, Round wont let you down.
__________________
RabidRabbit is offline   Reply With Quote
Old 08-01-2013, 17:46   #6
Registered User

Join Date: Jul 2012
Posts: 11
Re: Rafting two catamarans together

You talk about the Carribean. It's a big place. Each governing island can have different regs on moorings. Look at the BVI. The regs indicate that 60 feet is the max for an overnight mooring. You start lashing two <2> forty footers together and you're winding up with an 80 foot vessel exerting its forces on the mooring anchor. That's a bit much. Of course if someone will be on watch to keep an eye out for spin drift that's one thing. But, if both crews head in for a four hour stint on-island, you open the door for a major PROB. Same thing if you overnight it and no one is left on watch.
__________________
Saline Canine is offline   Reply With Quote
Old 08-01-2013, 23:51   #7
Registered User
 
waikikin's Avatar

Join Date: Jul 2007
Location: Sydney
Boat: Egan 12.40 in build, Carter 33, Seawind 24
Posts: 162
Re: Rafting two catamarans together

Quote:
Originally Posted by RabidRabbit View Post
I've recently become obsessed with round fenders. They seem to work better than the sausage style, as they are the choice of the commercial guys. My wife thinks im nuts for eventually spending $450ish to change over to five 18" round fenders. My old sausages are mis-matched, dirty, and old. But work fine, I just now want 5 new round fenders. Someone at dock said "naw ya gotta blow them up when you need them" My response "I'm a busy man and don't have time for that sh*t" as if I was breaking some yachtie code of fenders.
Go round, Round wont let you down.
Fenders are cheaper than repairs, that investment has gotta be less than your insurance excess. You need some sausages too for lashing to a fender board to lay against piles, too much aint enough when it comes to fenders. Jeff.......
__________________
waikikin is offline   Reply With Quote
Old 14-01-2013, 08:39   #8
Registered User

Join Date: Mar 2012
Location: North Carolina
Boat: Seaward 22
Posts: 691
Re: Rafting two catamarans together

Make sure to clear rafting with your charter company. Some do not allow it.
__________________
ohdrinkboy is offline   Reply With Quote
Old 14-01-2013, 10:34   #9
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 7,922
Re: Rafting two catamarans together

Another suggestion for rafting in general...go your separate ways at night unless you are in an extremely well protected anchorage. If the wind/waves pick-up then so does the likelihood of damage/injury. Two boats lashed together in a squall when the hook drags is not going to a fun evening.
__________________
belizesailor is online now   Reply With Quote
Old 14-01-2013, 12:56   #10
Registered User

Join Date: Nov 2009
Location: Berkeley Marina - San Francisco, CA
Boat: Glastron Spirit 28 - 28ft - Sizzle
Posts: 4
Re: Rafting two catamarans together

Thank you all for the replies! If we wanted to deploy two bow anchors for extra security what should be the procedure? Obviously one boat drops, sets. Does the other boat drop/set and then raft? Or raft, then dinghy out the second bow anchor and attempt to drop/set? The other skipper and I have been going back and forth, but I was imagining that both cats would drop/set and then maneuver to raft.

Thoughts?

We're chartering in the windward islands (St. Vincent to Grenada one-way) through TMM. Sorry for not mentioning that earlier.

ERik
__________________
erikdj is offline   Reply With Quote
Old 14-01-2013, 16:13   #11
Registered User

Join Date: Jul 2006
Posts: 3,949
Re: Rafting two catamarans together

My preference would be to tie up and then take out a second anchor in the dinghy. Just imagine the trick of dropping an anchor in a windy Caribbean anchorage upwind of another boat and then maneuvering in reverse to end up alongside gently, while someone else pays out chain and line on the bow and other people catch lines. I think that would be pretty tricky. I have seen folks raft up first, and then pull in the first anchor while motoring off to one side slowly, then dropping the second anchor while rafted up and falling back. Obviously, you don't go ahead far enough to trip out the first anchor.
__________________
Kettlewell Cruising
Kettlewell is offline   Reply With Quote
Old 17-01-2013, 19:45   #12
Registered User

Join Date: May 2010
Posts: 38
Re: Rafting two catamarans together

What happens when wind shifts directions and you have two anchors out? Sounds like a nightmare
__________________
Tropical Home is offline   Reply With Quote
Old 18-01-2013, 01:47   #13
Registered User

Join Date: Nov 2010
Posts: 830
Images: 27
Re: Rafting two catamarans together

Boatpoint is ok.
Yacht and Boat is hopeless and half of the photos don't match the advertised boat.
There are some other randoms like MDBS sell yachts/power boats in Australia-Asia-New Zealand-Noumea that sometimes have some gems.

As stated earlier the good ones don't seem to make it to the big sites, they sell first locally.
__________________
ausaviator is offline   Reply With Quote
Old 17-02-2013, 18:36   #14
Registered User

Join Date: Nov 2012
Location: Nelson NZ
Boat: Kelsall 10.6 catamaran
Posts: 33
Re: Rafting two catamarans together

Arrrgh, yr all bunnies, if yr gunna raft, get every-one involved. This was in a very sheltered anchorage in Tasmania, all hanging off one 60lb anchor in the centre. Stayed all night and had a legendary party!!

Rob
Attached Thumbnails
Click image for larger version

Name:	catmuster.JPG
Views:	167
Size:	70.1 KB
ID:	55071  
__________________

__________________
motu42 is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:33.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.