Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 19-01-2018, 06:19   #1
Senior Cruiser
 
JohnEasley's Avatar

Cruisers Forum Supporter

Join Date: May 2016
Location: Palmetto, FL
Boat: "Yacht-a Yacht-a" -- 1986 Chris Craft 42' Catalina 426 Aft Cabin
Posts: 469
Images: 5
Bottom Painting - Length of time vs Water temp

G'morning all!

Seems so basic... Am I correct that the temperature of the water has a more or less indirect impact on the length of time that bottom paint will last?

In Florida, we're accustomed to hauling and redoing bottom paint every two to three years. Hulls get dived and cleaned every month but, in the summer months when water temps are highest, the algae and barnacle growth is much faster. Are boats in cooler water where algae and barnacle activity is slower getting longer periods between bottom jobs?

We're planning to retire in three years. At that point, we're going to travel up the east coast in the warmer months and back down in the winter. Snow birds. Snow water birds. Are we correct in thinking that if we are in cooler water and still have the hull cleaned monthly, we may be able to go longer between bottom jobs? Perhaps five years? More?

Thanks.

John
__________________

JohnEasley is offline   Reply With Quote
Old 19-01-2018, 06:52   #2
Registered User
 
Olddan1943's Avatar

Join Date: Aug 2017
Location: Aventura, FL
Boat: 2008 American Tug 34 #116
Posts: 449
Re: Bottom Painting - Length of time vs Water temp

Quote:
Originally Posted by JohnEasley View Post
G'morning all!

Seems so basic... Am I correct that the temperature of the water has a more or less indirect impact on the length of time that bottom paint will last?

In Florida, we're accustomed to hauling and redoing bottom paint every two to three years. Hulls get dived and cleaned every month but, in the summer months when water temps are highest, the algae and barnacle growth is much faster. Are boats in cooler water where algae and barnacle activity is slower getting longer periods between bottom jobs?

We're planning to retire in three years. At that point, we're going to travel up the east coast in the warmer months and back down in the winter. Snow birds. Snow water birds. Are we correct in thinking that if we are in cooler water and still have the hull cleaned monthly, we may be able to go longer between bottom jobs? Perhaps five years? More?

Thanks.

John
John, if you notice, the necessity of cleaning your seawater strainers is less frequent in the winter, even in FL
You diver should be able to give you some guidance for the condition of the bottom paint. I think it would be a real stretch to wait 5 years. I would recommend every 2 years and 2 coats. IF you elect to try and stretch it 3 years, that is your decision.
__________________

__________________
And you folks thought I knew what I was talking about.
I do believe my intuitive gene has died.
Olddan1943 is online now   Reply With Quote
Old 19-01-2018, 10:48   #3
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,647
Re: Bottom Painting - Length of time vs Water temp

Quote:
Originally Posted by JohnEasley View Post
Am I correct that the temperature of the water has a more or less indirect impact on the length of time that bottom paint will last?
You are not correct. An anti fouling paint's effective lifespan is 100% determined by the amount of biocide in the paint and the rate at which that biocide is designed to be released into the water. Water temperature plays little or no part in this. Further, most anti fouling paints are formulated to perform well for around three years, give or take. Five years is an unrealistic expectation, regardless of where you do your boating.
fstbttms is offline   Reply With Quote
Old 19-01-2018, 11:01   #4
Registered User
 
s/v Moondancer's Avatar

Join Date: Nov 2008
Location: Japan heading for Alaska
Boat: Tayana 55
Posts: 1,371
Re: Bottom Painting - Length of time vs Water temp

We spent 6 years sailing between the northern US and the Caribbean...We painted the bottom every two years.
__________________
Phil

"Remember, experience only means that you screw-up less often."
s/v Moondancer is offline   Reply With Quote
Old 20-01-2018, 15:34   #5
Registered User

Join Date: Dec 2014
Posts: 153
Re: Bottom Painting - Length of time vs Water temp

The worst growth rate of all sorts of stuff (I observed) on boat bottoms was at Hout Bay in South Africa. Very cold water, but extremely rapid weed and barnacle growth.
I suspect that if the water environment changes regularly (e.g. fresh to saline, cold to warm), then the environmental changes will sort out many organisms.
If you want to become an instant zillionaire, discover and market a safe antifouling alternative with a guaranteed life of ten or more years.
What I have noticed that sometimes you may see a particular rock or sand that has no apparent growth on it. Interesting. How come?
billgewater is offline   Reply With Quote
Reply

Tags
bottom paint, paint, water

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
For Sale: Garmin NMEA 2k/Nexus Speed/Temp & Depth/Temp Transducers Albicelesail General Classifieds (no boats) 3 16-04-2017 11:42
Re: Bottom Blasting and Bottom Painting, New Jersey, NY, CT, PA, DE and MD. AtlanticGreenPro Vendor Spotlight - Great Deals for CF Members! 3 28-12-2013 07:13
Westerbeke 46 Temp Sender vs. Temp Switch zboss Engines and Propulsion Systems 8 29-10-2013 21:11
Bottom Blasting and Bottom Painting, New Jersey, PA, DE and MD. AtlanticGreenPro Vendor Spotlight - Great Deals for CF Members! 22 27-08-2013 14:13
Hull access and bottom painting jdm Monohull Sailboats 4 01-05-2005 15:11



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 02:56.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.