Reply
 
Thread Tools Display Modes
 
Old 12-15-2012, 06:36 PM   #81
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 13,714
Daddyo,
Yes now that I can see your QBBL fairly well and your emersed transom. The DeFever is definitely semi disp and a bit closer to full disp than an Island Gypsy that I think (hull shape wise) is on the other side of SD. As is many to most other trawlers on the forum.
I see on the top pic the chine is straight (or parallel to the WL) as would be the case w a full plaining hull at rest. With the DF your inner buttock line (where bottom meets the keel) has a rather steep angle for trawlers. So your boat is a semi-disp and a bit closer to FD.
For years I've seen the submerged straight chine aft and in my own mind labeled the DF a SD boat. But quite a few guys obviously haven't liked that so I'm glad you pulled that out in the open. The DF is closer to FD.

Here is a full blown full disp hull. You can see that the QBBL running fore and aft half way between the keel and the side of the boat is very steep. Could be about 30 degrees.
Attached Thumbnails
Click image for larger version

Name:	DSCF0155 copy.jpg
Views:	62
Size:	126.9 KB
ID:	14751  
__________________
Advertisement

__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 12-18-2012, 04:45 AM   #82
Guru
 
Alemao's Avatar
 
City: Fort Myers - FL
Country: Brazil
Vessel Name: ORIGINAL
Vessel Model: Hi Star 55
Join Date: Jul 2011
Posts: 629
I made a little sea trial and my port engine heated up and busted a hose. I stopped it and continuous with just one engine and the speed was almost the same with half consumption.

Sergio "Alemao" Sztancsa, Sent from my iPhone using Trawler
__________________

Alemao is offline   Reply With Quote
Old 12-18-2012, 08:35 AM   #83
Guru
 
Daddyo's Avatar


 
City: Cruising East Coast US
Country: USA
Vessel Name: Grace
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 2,441
Quote:
Originally Posted by manyboats View Post
Daddyo,
Yes now that I can see your QBBL fairly well and your emersed transom. The DeFever is definitely semi disp and a bit closer to full disp than an Island Gypsy that I think (hull shape wise) is on the other side of SD. As is many to most other trawlers on the forum.
I see on the top pic the chine is straight (or parallel to the WL) as would be the case w a full plaining hull at rest. With the DF your inner buttock line (where bottom meets the keel) has a rather steep angle for trawlers. So your boat is a semi-disp and a bit closer to FD.
For years I've seen the submerged straight chine aft and in my own mind labeled the DF a SD boat. But quite a few guys obviously haven't liked that so I'm glad you pulled that out in the open. The DF is closer to FD.

Here is a full blown full disp hull. You can see that the QBBL running fore and aft half way between the keel and the side of the boat is very steep. Could be about 30 degrees.
How about hard chine full displacement
__________________
Mark Bowerman
Brokerage owner and cruiser
Esse Quam Videri
http://graceyachting.com/
Daddyo is offline   Reply With Quote
Old 12-18-2012, 10:19 AM   #84
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 15,908
Quote:
Originally Posted by Daddyo View Post
How about hard chine full displacement
A box is full displacement...ask any tugboat captain..
psneeld is online now   Reply With Quote
Old 12-19-2012, 01:55 PM   #85
Guru
 
Alemao's Avatar
 
City: Fort Myers - FL
Country: Brazil
Vessel Name: ORIGINAL
Vessel Model: Hi Star 55
Join Date: Jul 2011
Posts: 629
After I fixed and went back home I asked a mechanic that his Phone is 3208 and I asked him if I could don`t use the turbos, twice 210Hp are enough for 8.5 knots and the consumption could be low.
__________________

Alemao is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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





All times are GMT -5. The time now is 04:57 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012