Reply
 
Thread Tools Display Modes
 
Old 11-29-2010, 01:17 PM   #1
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
New Guy needs advise

Hi all,I will finally be buying my first Trawler.Ive been looking online for a year and have narrowed it down somewhat. I cant get any good answers about GPH,MPG. Im looking at 36' I.G. sedan,Twin 135s/ 36' M.T. sedan 120 single, and I just found a 1983 38' Nova that they dont know what size the twins are. Ive never heard of a Nova, Id hate to fly to Cal. and find shes got 454 buicks in her. Any thoughts ? Thanks Bill
__________________
Advertisement

belizebill is offline   Reply With Quote
Old 11-29-2010, 01:33 PM   #2
Veteran Member
 
Baypoint's Avatar
 
City: Panama City Beach, FL
Country: USA
Vessel Name: Parra-dise
Vessel Model: Gulfstar 44 MY
Join Date: Oct 2010
Posts: 75
RE: New Guy needs advise

Talk to the owners of the boat and ask them thir burn rate. Ask more then one since some may exagerate. They may be telling you a burn rate with a 40 knot tail wind.* If the single doenst have a bow thruster you will probably not be happy with the handling during docking. It can be learned but being a new trawler owner you would probably be happier with the twins. Although you may get an arguement about it here.
__________________

Baypoint is offline   Reply With Quote
Old 11-29-2010, 02:29 PM   #3
Guru
 
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 6,360
RE: New Guy needs advise

Looking at 100 online does not compare to looking at 1 at the dock. Last time I bought a boat it involved at least 15 different marinas and probably 40 vessels. The term "walk the docks" is apt. After a few months things like singles, twins, fuel burn, galley up, blisters, teak decks, leaking windows, Taiwan Trawler, *and Nova will start to fall into place.

Make yourself a spread sheet listing your likes, wants and needs.*Add to it condition, hours, mechanical condition*etc. Rank each boat you see accordingly. Good luck.
sunchaser is offline   Reply With Quote
Old 11-29-2010, 02:39 PM   #4
Senior Member
 
ralphyost's Avatar
 
City: Cape Coral FL
Country: USA
Vessel Name: Say GoodBye
Vessel Model: 21 Mako
Join Date: Oct 2007
Posts: 261
RE: New Guy needs advise

Here is a ROUGH rule of thumb....+/-

Single Lehman 120 is about 2.5 galls/hr @ 1800 rpm

Twin 120s can be about 4 galls/hr.

Remember this is a rough giude. There are lots of specifics that could change these figures.

R.
ralphyost is offline   Reply With Quote
Old 11-29-2010, 03:43 PM   #5
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
RE: New Guy needs advise

Spread sheets is exactly what Ive been doing (great minds eh?) good advise, Condition,price,Fuel economy is a factor living here in the Western Carribean as I guess anywhere. Not afraid of Teak,its how Ive made my living for the past 30 years.
belizebill is offline   Reply With Quote
Old 11-29-2010, 07:01 PM   #6
Veteran Member
 
surveyor1's Avatar
 
Join Date: Jan 2009
Posts: 42
New Guy needs advise

I have a 40' NOVA with twin Volvos. See avatar.
According to "THE BOAT BUYER'S GUIDE TO MOTOR YACHTS AND TRAWLERS", there was no 38' NOVA, only 36, 40, 42 and 44. The 36 may have Volvos too.
NOVAs are made in Taiwan by NOVA Marine as opposed to CHB's etc.
I burn about 6 gph at hull speed.

-- Edited by surveyor1 on Monday 29th of November 2010 08:02:27 PM

-- Edited by surveyor1 on Monday 29th of November 2010 08:07:12 PM
surveyor1 is offline   Reply With Quote
Old 11-29-2010, 07:43 PM   #7
Guru
 
koliver's Avatar
 
City: Saltspring Island
Country: BC, canada
Vessel Name: Retreat
Vessel Model: C&L 44
Join Date: Nov 2007
Posts: 2,165
RE: New Guy needs advise

Fuel burn is more closely related to the size of the wave you want to pull than to the engines, brand names, size, or whether single or twin. If you are content at hull speed, which for your 36 to 42 ft is going to be 7 to 8 knots, you will get by on 3 to 4 gph. Start going faster and your wave gets taller and up goes the fuel burn.
koliver is offline   Reply With Quote
Old 11-29-2010, 09:12 PM   #8
Guru
 
Carey's Avatar
 
City: Bellingham, WA
Country: USA
Vessel Name: Happy Destiny
Vessel Model: Custom Lobster Yacht
Join Date: Oct 2007
Posts: 1,101
RE: New Guy needs advise

Quote:
belizebill wrote:

Hi all,I will finally be buying my first Trawler.Ive been looking online for a year and have narrowed it down somewhat. I cant get any good answers about GPH,MPG. Im looking at 36' I.G. sedan,Twin 135s/ 36' M.T. sedan 120 single, and I just found a 1983 38' Nova that they dont know what size the twins are. Ive never heard of a Nova, Id hate to fly to Cal. and find shes got 454 buicks in her. Any thoughts ? Thanks Bill
THEY DON'T KNOW WHAT SIZE THEIR ENGINES ARE??? Then they probably don't know if they have oil in them. Don't waste your time.

*
Carey is offline   Reply With Quote
Old 11-30-2010, 04:02 AM   #9
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 16,515
RE: New Guy needs advise

Usually the rating of the engines will show the style of cruising service the boat was designed for.

A 36 ft boat with 100 hp is going to be really cheap at the Sq RT of the lwl, say 6k for LRC.

Hull speed will double or more , the burn for an extra K or 2.

If the 36 ft boat boasts 350 hp, it was designed as an inshore weekender , the speed will be double the small engined boat 15K but the fuel burn will be 10-15 times higher.

On unusual boats , where you cant simply ask owners , a quick math will work.

Find the vessels displacement , that is how much it weighs (not the USCG "tons" which is volume).

Divide the weight in pounds by 2240 for the displacement in tons.

Slow cruise will cost 2 or 3 hp per ton, so multiply the tons by 3.

Then divide that number by 16 for a diesel or 12 for gas.

This will give a rough GPH at normal cruise.
FF is offline   Reply With Quote
Old 11-30-2010, 09:00 AM   #10
TF Site Team
 
Baker's Avatar
 
City: League City, Tx
Country: Texas
Vessel Model: Carver 356
Join Date: Oct 2007
Posts: 5,630
RE: New Guy needs advise

Quote:
ralphyost wrote:

Here is a ROUGH rule of thumb....+/-

Single Lehman 120 is about 2.5 galls/hr @ 1800 rpm

Twin 120s can be about 4 galls/hr.

Remember this is a rough giude. There are lots of specifics that could change these figures.

R.
Amen to this. *If you need to know more than this, then you are just being "geeky" about fuel burn or you are in over your head(financially) if you are sweating every ounce of fuel burned.

*
Baker is offline   Reply With Quote
Old 11-30-2010, 09:34 AM   #11
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
RE: New Guy needs advise

My main concern about fuel usage is if I have to add tankage to cruise in the third world where I live and not have to be looking for "good" fuel all the time. Bill
belizebill is offline   Reply With Quote
Old 11-30-2010, 09:48 AM   #12
TF Site Team
 
Baker's Avatar
 
City: League City, Tx
Country: Texas
Vessel Model: Carver 356
Join Date: Oct 2007
Posts: 5,630
RE: New Guy needs advise

Sorry Bill if I came off condescending. I guess my statement was a generalization from a coastal type...
Baker is offline   Reply With Quote
Old 11-30-2010, 09:52 AM   #13
Guru
 
Phil Fill's Avatar
 
City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
RE: New Guy needs advise

So what kind of range are you looking for?* *


*
I just posted a long reply under Hi! Newbie as his is sort of looking for boat with good range, 3000 to 4,000 NM.*
Phil Fill is offline   Reply With Quote
Old 11-30-2010, 10:01 AM   #14
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
RE: New Guy needs advise

Naw its cool,cant hurt my feelings,allredy been ripped out by 4 ex wives. Bill
belizebill is offline   Reply With Quote
Old 11-30-2010, 10:02 AM   #15
Guru
 
Moonstruck's Avatar
 
City: Hailing Port: Charleston, SC
Country: USA
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 7,848
RE: New Guy needs advise

Quote:
Baker wrote:If you need to know more than this, then you are just being "geeky" about fuel burn or you are in over your head(financially) if you are sweating every ounce of fuel burned.



*
Baker, that's not like you.* Are you sure you are getting enough bulk in your diet?

*
Moonstruck is offline   Reply With Quote
Old 11-30-2010, 10:06 AM   #16
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
RE: New Guy needs advise

I was wanting around 1500nm,I can bypass Mexico,(from Key West) that way and come up or down the Yucatan channel after fueling in Belize or Havana,depending going North or South.Bill
belizebill is offline   Reply With Quote
Old 11-30-2010, 10:32 AM   #17
Guru
 
Phil Fill's Avatar
 
City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
RE: New Guy needs advise

I am not so much concerned about the price as I might be about range as I would like to fill up in Seattle and not have to fill up in Canada. I am not sure what the price is in Alaska? Moat of the commercial run straight through Canada as they have to much gear stuff to clear canadian customs?

So what kind of boat are you looking at as that is a big factor as to fuel use and range?
Phil Fill is offline   Reply With Quote
Old 11-30-2010, 11:16 AM   #18
Senior Member
 
belizebill's Avatar
 
City: Caye Caulker
Country: Belize, Central America
Vessel Name: Irish Miss
Vessel Model: 36' Marine Trader, D C
Join Date: Nov 2010
Posts: 227
RE: New Guy needs advise

Yea,I wanted to stay around 36', Im adding a nother 100' of dock so I can get 4'. We can be preety shallow around here. Id love to have a larger boat but draft is also a concern. Bill
belizebill is offline   Reply With Quote
Old 11-30-2010, 11:50 AM   #19
Guru
 
Egregious's Avatar
 
City: Sunset Beach, NC
Country: USA
Vessel Name: Polly P.
Vessel Model: Monk 36
Join Date: Feb 2010
Posts: 554
RE: New Guy needs advise

Quote:
FF wrote:

Usually the rating of the engines will show the style of cruising service the boat was designed for.

A 36 ft boat with 100 hp is going to be really cheap at the Sq RT of the lwl, say 6k for LRC.

Hull speed will double or more , the burn for an extra K or 2.

If the 36 ft boat boasts 350 hp, it was designed as an inshore weekender , the speed will be double the small engined boat 15K but the fuel burn will be 10-15 times higher.

On unusual boats , where you cant simply ask owners , a quick math will work.

Find the vessels displacement , that is how much it weighs (not the USCG "tons" which is volume).

Divide the weight in pounds by 2240 for the displacement in tons.

Slow cruise will cost 2 or 3 hp per ton, so multiply the tons by 3.

Then divide that number by 16 for a diesel or 12 for gas.

This will give a rough GPH at normal cruise.
This method was right on for my boat.* This calculation is very close to actual fuel burn at slow cruise.

*
Egregious is offline   Reply With Quote
Old 11-30-2010, 01:03 PM   #20
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 9,994
RE: New Guy needs advise

Hiya,
** Mr bbill.* Where are you located in Belize?* I have a slight familiarity with Caye Caulker and Ambergris...
__________________

RT Firefly 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
How about this guy? elhewman General Discussion 0 04-08-2011 11:15 PM
New Guy from LI NY Gin General Discussion 29 02-24-2011 04:33 AM
Another New Guy scarletbison General Discussion 7 09-23-2010 03:32 AM
New Guy COCG47 General Discussion 18 09-20-2010 04:35 AM




All times are GMT -5. The time now is 01:48 AM.


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