Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 13-01-2018, 08:09   #1
Registered User

Join Date: Jun 2016
Location: Reston, VA, USA
Boat: Beneteau Oceanis 35.1
Posts: 414
Deicer and ablative bottom paint issues?

I was able to hang a deicer in the slip yesterday. (This is after the boat suffered a week locked in ice. ) Now I am wondering whether there is an issue with a deicer and the ablative bottom paint. The deicer is about 6 to 8 feet from the hull so I am certain the water has slowed from how fast it was coming off the deicer propeller.

There must be a minimum water velocity for ablative paint to ablate. Would the moving water from a deicer at a normal standoff distance be above that velocity?
Dr. D is offline   Reply With Quote
Old 13-01-2018, 09:03   #2
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 3,467
Re: Deicer and ablative bottom paint issues?

Quote:
Originally Posted by Dr. D View Post
I was able to hang a deicer in the slip yesterday. (This is after the boat suffered a week locked in ice. ) Now I am wondering whether there is an issue with a deicer and the ablative bottom paint. The deicer is about 6 to 8 feet from the hull so I am certain the water has slowed from how fast it was coming off the deicer propeller.

There must be a minimum water velocity for ablative paint to ablate. Would the moving water from a deicer at a normal standoff distance be above that velocity?
It's unlikely there is a minimum below which the water velocity effect would be negligible. Rather, the rate of ablation is directly proportional to velocity.

Given the relatively low flow caused by a deicer, it's not something I ever worried about but if you do, a short haul for re painting would be appropriate. Either that or move to Florida with the rest of us and spend the winter sailing.
S/V Illusion is offline   Reply With Quote
Old 13-01-2018, 09:21   #3
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,569
Re: Deicer and ablative bottom paint issues?

Because I have only used a melter with cats (the water flow is between the hulls) I have never faced the issue. An interesting question.

Generally 4-6 knots (7-10 feet per second) is the threshold, depending on the paint. That's a lot of flow, so unless it is quite close, I doubt it.

The other thing you should do is put the melter on a thermostat so that it only runs when the temperature is below ~ 28F (when ice will form). This saves power, reduces clogging of the prop (you will catch plastic bags and sticks), reduces wear on the melter, and potentially, saves paint.

Honestly, in Deale, you don't need it. Been there 20 over years.
__________________
Gear Testing--Engineering--Sailing
https://sail-delmarva.blogspot.com/
thinwater is online now   Reply With Quote
Reply

Tags
bottom paint, paint

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
Ablative Or Hard Bottom Paint? lexilee Construction, Maintenance & Refit 46 04-11-2018 10:18
'Practical Sailor' - Best Ablative Bottom Paint ? KevinE Construction, Maintenance & Refit 23 02-04-2015 12:35
Woolsey Ablative Bottom Paint kimballsingh Product or Service Reviews & Evaluations 7 18-06-2013 18:34
Advice on Using International Uni-Pro Ablative Bottom Paint nelson.peter Construction, Maintenance & Refit 6 12-04-2010 02:43
Ablative bottom paint shelf life jwaring1 General Sailing Forum 6 15-01-2008 05:08

Advertise Here


All times are GMT -7. The time now is 12:58.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.