Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-02-2015, 14:55   #1
Registered User
 
Dr. Sea's Avatar

Join Date: Dec 2014
Location: Annapolis/ BVI
Boat: Oyster 55
Posts: 194
Are dark hulls hotter?

I love the appearance of a dark hulled boat, but I wonder about the effect on heat inside the boat. I sail and plan to sail in mostly tropical areas, and I prefer to not be dependent on air conditioning, so a heat gain would not be good. How much heat gain would a dark hull cause?
__________________

__________________
Dr. Sea is offline   Reply With Quote
Old 19-02-2015, 15:04   #2
Registered User
 
Steady Hand's Avatar

Join Date: Jul 2014
Location: Crewing All of 2017 Available Globally
Boat: OPB = Crewing in 2017
Posts: 4,851
Re: Are dark hulls hotter?

Howdy!

What follows is written in a truly friendly tone of voice and with the sole intent to help you.

There have been other threads posted discussing this issue at length, with differing opinions.

Since you are new to the forum, here is a friendly tip: Look at the menu bar on the forum pages for the "Search" menu. Click on that to drop down a list of search functions, select the GOOGLE CUSTOM search feature and then enter several different descriptive terms. That will do a custom google search of this site and it is likely to yield results quickly for you.

Here is an example using the terms "dark hull"

dark hull - Google Search
__________________

__________________
Ahoy All Sailors! Need experienced crew for a passage or delivery in Atlantic, Pacific, Caribbean, Med, PNW, ICW, coastal or across an ocean anytime in 2017? I am available on 24hr notice. See my CF Profile "About Me" page for details. Happy to lend a hand!
Steady Hand is offline   Reply With Quote
Old 19-02-2015, 15:05   #3
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: UK/Portugal
Posts: 20,203
Images: 2
Send a message via Skype™ to boatman61
pirate Re: Are dark hulls hotter?

The key is good air circulation and your location.. in any colour boat..
If your stuck in a sheltered marina the guy in the white boats gonna sweat as much as you..
If your on an anchorage with decent wind scoops you'll be fine.. just keep the deck colour light.. cream or sand..
Many will disagree
__________________


Born To Be Wild
boatman61 is online now   Reply With Quote
Old 19-02-2015, 15:20   #4
Registered User

Join Date: Jun 2014
Location: Earth
Boat: Amel Super Maramu 53 ft
Posts: 504
Re: Are dark hulls hotter?

Oyster did comparative tests a few years ago. On 2 identical boats, one dark blue and the other white, the dark boat temperature in the fan tail was 35C hotter.

This causes early delamitation apparently. Plus takes much more polishing and elbow grease to keep good looking.

Blue boat? Not for me... same goes for teak decks.
__________________
Eleuthera 2014 is offline   Reply With Quote
Old 19-02-2015, 15:23   #5
Registered User
 
Delancey's Avatar

Join Date: Oct 2011
Location: Miami, FL
Boat: sunk by irma
Posts: 3,462
Re: Are dark hulls hotter?

“There are only two colors to paint a boat - black or white. And only a fool would paint a boat black.”

- Capt. Nathanael Greene Herreshoff
Attached Thumbnails
Click image for larger version

Name:	Yacht_Defender.jpg
Views:	275
Size:	426.7 KB
ID:	97455   Click image for larger version

Name:	Sloop_Gloriana.jpg
Views:	285
Size:	401.5 KB
ID:	97456  

__________________
Delancey is offline   Reply With Quote
Old 19-02-2015, 15:39   #6
Registered User
 
Dr. Sea's Avatar

Join Date: Dec 2014
Location: Annapolis/ BVI
Boat: Oyster 55
Posts: 194
Re: Are dark hulls hotter?

Quote:
Originally Posted by Eleuthera 2014 View Post
Oyster did comparative tests a few years ago. On 2 identical boats, one dark blue and the other white, the dark boat temperature in the fan tail was 35C hotter.

This causes early delamitation apparently. Plus takes much more polishing and elbow grease to keep good looking.

Blue boat? Not for me... same goes for teak decks.
I wasn't thinking about the fantail so much as the cabins, and 35 degrees, even Fahrenheit is very bad news. I know that polishing is an issue, because I have a day sailing boat that I race, and I have to keep its red hull covered to protect it from the sun. But I don't try to sleep on it. Heat, polishing, and delamination add up to a big vote against dark hulls. But they sure are good looking!
__________________
Dr. Sea is offline   Reply With Quote
Old 19-02-2015, 15:52   #7
Registered User
 
crazyoldboatguy's Avatar

Join Date: Apr 2014
Location: Chicago
Boat: Alden auxiliary ketch 48'
Posts: 857
Re: Are dark hulls hotter?

Only when the sun is shining.
__________________
Outside of a dog, a book is a man's best friend.
Inside of a dog, it's too dark to read.
crazyoldboatguy is offline   Reply With Quote
Old 19-02-2015, 15:55   #8
Registered User
 
four winds's Avatar

Join Date: Oct 2010
Location: Wandering the US Gulf Coast
Boat: 78 Pearson323 Four Winds
Posts: 2,138
Re: Are dark hulls hotter?

At anchor during Florida summers a dark blue hull has been fine for me. Using the Breeze Booster wind scoop really moves some air through the boat.

Off white deck with a gray cabin stripe, and yes I can feel where the stripe is from the inside via heating. If I place my hand on the inner liner.

Hotter than a white boat? Don't know because I've never owned one and little or no time anchoring on other boats.

Probably is hotter, but my preference for a dark hull overrides any logic here in this case.
__________________
Life begins at the waters edge.
four winds is offline   Reply With Quote
Old 19-02-2015, 16:02   #9
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Are dark hulls hotter?

If the hull is cored, there isn't as much difference in temp. If the hull is not cored, the difference is dramatic.

I owned a green boat in Michigan at one time. After two years, I painted it white. The difference was like turning off a heat gun.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 19-02-2015, 16:03   #10
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Re: Are dark hulls hotter?

At first I thought this was a misplaced title and should have been in the "Titles we want to see..." thread but then I realized that people are taking it seriously.
__________________
DeepFrz is offline   Reply With Quote
Old 19-02-2015, 17:33   #11
Registered User
 
Island Time O25's Avatar

Join Date: Sep 2014
Posts: 2,019
Re: Are dark hulls hotter?

In Maine if you want to prolong your sailing season dark hull is great. In Florida - not so much.
__________________
Island Time O25 is offline   Reply With Quote
Old 19-02-2015, 17:53   #12
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: Are dark hulls hotter?

Quote:
Originally Posted by DeepFrz View Post
At first I thought this was a misplaced title and should have been in the "Titles we want to see..." thread but then I realized that people are taking it seriously.

A dirty mind is a joy forever
__________________
s/v Jedi is offline   Reply With Quote
Old 19-02-2015, 18:12   #13
Marine Service Provider

Join Date: Oct 2010
Location: floating around ... hopefully in aqua clear swimming pool water!
Boat: 1985 Passport 37
Posts: 172
Re: Are dark hulls hotter?

More issues than just hot -- we have a dark dark green hull and have cruised from Annapolis to Cartagena Colombia and back to Florida, currently in Key West. I wrote a synopsis of our opinion of fact & fiction when it comes to a dark hull ... here's the link if you're interested: Dark Hull Boats: Fact & Fiction
__________________
Cheers! Jan

http://commutercruiser.com
sv Winterlude is offline   Reply With Quote
Old 19-02-2015, 18:29   #14
Registered User
 
Chenega's Avatar

Join Date: May 2012
Location: CT
Boat: Corbin 39 / 41.5 LOA
Posts: 151
Re: Are dark hulls hotter?

Quote:
Originally Posted by Delancey View Post
“There are only two colors to paint a boat - black or white. And only a fool would paint a boat black.”



- Capt. Nathanael Greene Herreshoff

And for that very reason I decided to paint my favorite boat ( an H-28 ) top sides black! She was a beauty..! 😃
__________________
Live the dream, life is good
Chenega is offline   Reply With Quote
Old 19-02-2015, 19:21   #15
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 1,693
Re: Are dark hulls hotter?

That's why they sell only white cars in Florida... Oh, wait....
__________________

__________________
S/V Illusion is offline   Reply With Quote
Reply

Tags
hull

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar's that run hotter every year. Pgisailor Engines and Propulsion Systems 0 01-05-2013 20:44
Hello from Hotter'nHell Texas Sandbarz Meets & Greets 14 20-09-2011 12:47
Perkins 4.154 running hotter - thermostat? SV Liberty Engines and Propulsion Systems 7 06-06-2011 18:17
Thru-Hulls in Cored Hulls ggray Construction, Maintenance & Refit 7 22-12-2009 09:07
It was a dark and starless night-- Mike Banks The Sailor's Confessional 2 27-10-2007 20:40



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:11.


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.