Cruisers Forum

Join CruisersForum Today

Thread Tools Search this Thread Rate Thread Display Modes
Old 21-03-2019, 16:52   #1
Registered User

Join Date: Jan 2017
Posts: 7
ICW mast modification

I am looking to purchase a catamaran to live aboard and be able to bring it back to the central east coast of Florida into the ICW. I know there are some cats that are in the 38-42' range and will clear the 65' bridge clearances but I am also interested in more space. Some of 44-46' cats have the space I want but not the clearance for the bridges. I have been told that some people have modified the mast to accommodate the bridge clearance. My questions and concerns are:
How much sail power would I lose by cutting off 7' of mast on a 46' cat? I would think the weight and displacement of the boat will matter. Is there an equation that would help with that answer?

What are the costs of modifications of mast, rigging and sails?

I am trying to decide do I go for the smaller vessel that I know will fit under the Bridges? Or go with the bigger vessel and modify the mast so I can come back to my land based home? Or do I buy the bigger boat and not worry about having to come back and just keep sailing?

Kingoffun is offline   Reply With Quote
Old 21-03-2019, 18:08   #2
Registered User

Join Date: Feb 2014
Location: Kilmarnock, VA
Boat: Moody M46 46
Posts: 303
Re: ICW mast modification

I have a boat with a 65' mast (plus a few more feet of VHF, tricolor, anemometer, etc.) so I sympathize with the ICW bridge restrictions. Nonetheless, taking off 7' from the mast on your cat will have a huge and mostly negative effect. It will be expensive: new sails and rigging. Worse, it will drastically affect performance. The designer calculated the sail square footage to propel and maneuver the boat, and removing 7' from jib and main will leave the boat under powered to sail in any condition.

Moody46CC is offline   Reply With Quote
Old 21-03-2019, 18:10   #3
Jim Cate's Avatar

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 14,577
Re: ICW mast modification

Cutting off 7 feet will definitely affect sailing performance in light to medium winds.

The costs will be high, for a new mainsail will be required if decent sail shape is to be retained, plus mods to all headsails if not replacement.

New rigging will be required, for most riggers won't swage new ends on old wire. You could DIY that part with mechanical terminals. If the rig utilizes diamonds, a rigger would likely be needed to modify those parts properly.

To me, it sounds like a bad idea. Perhaps you will be happier with a motor cat?

Jim and Ann s/v Insatiable II now lying Towlers Cove, in Broken Bay NSW for a while
Jim Cate is offline   Reply With Quote
Old 21-03-2019, 18:27   #4
Registered User
sanibel sailor's Avatar

Join Date: Feb 2013
Location: Sanibel FL
Boat: 1979 Bristol 35.5 CB
Posts: 1,175
Re: ICW mast modification

A guy in our club did this on his cat. SLOW!

and its not 7 feet off the top where the sail is skinny, think of it as off the bottom by the boom.

powerful negative resale effect
John Churchill Sanibel FL
NURDLE, 1979 Bristol 35.5 CB
sanibel sailor is offline   Reply With Quote
Old 21-03-2019, 18:31   #5
Registered User

Join Date: Oct 2013
Location: Narragansett Bay
Boat: Whitby 42
Posts: 99
Re: ICW mast modification

I met a cat that did it. Fractional rig so the rigging didn't need to be cut. they cut the mast down and recut the main to have a square top. They said the yard does a lot of them.
mikeod is offline   Reply With Quote
Old 22-03-2019, 19:14   #6
Registered User

Join Date: Mar 2009
Location: Southern Chesapeake Bay
Boat: Norseman 430, Jabberwock
Posts: 868
Re: ICW mast modification

At least you haven't bought the boat yet.
Keep looking, and keep away from any cat with a flybridge. That raises the rig to begin with.
ggray is offline   Reply With Quote
Old 22-03-2019, 19:40   #7
Registered User
danielamartindm's Avatar

Join Date: Jul 2011
Location: St. Petersburg, Florida
Boat: Leopard 39
Posts: 860
Re: ICW mast modification

Anything is possible but even if cost isn't a factor, you're going to have to choose two out of three- of sailing ability, spacious accommodations, and ICW clearance.

danielamartindm is offline   Reply With Quote

icw, mast

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
ICW Reports 2018 Total Fuel and Time Used for Long Distance ICW Voyages Steadman Uhlich General Sailing Forum 0 15-10-2018 10:57
ICW questions for ICW veterans advocate777 General Sailing Forum 13 25-11-2017 09:59
380: Mast modification CruiserAD Lagoon Catamarans 2 02-03-2017 13:43
Mast modification question (spreaders) HoneyRyder Construction, Maintenance & Refit 30 27-02-2017 03:22

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:20.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.