Anyone ever own a Trawler?

Status
Not open for further replies.

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman good except for one little detail

the jet of water will entrain more water on that side of the boat and will pull the boat towards the jet. So the system might work but opposite from the way you expect. ;)
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman good except for one little detail

the jet of water will entrain more water on that side of the boat and will pull the boat towards the jet. So the system might work but opposite from the way you expect. ;)
 
Jan 27, 2007
383
Irwin 37' center cockpit cleveland ohio
hmmmmm

I disagree with your thought process on two counts. If what you say is true, then why does the water push backwards when I go forward on my boat? By your thinking, I should be going sdrawkcab. On another plane, the motor would be reversable, so your statement is meaningless. If in fact the boat pulled toward the pushing water, then you simply use the system in reverse.
 
Jan 27, 2007
383
Irwin 37' center cockpit cleveland ohio
hmmmmm

I disagree with your thought process on two counts. If what you say is true, then why does the water push backwards when I go forward on my boat? By your thinking, I should be going sdrawkcab. On another plane, the motor would be reversable, so your statement is meaningless. If in fact the boat pulled toward the pushing water, then you simply use the system in reverse.
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman , it is easy to check my statement.

get a bucket of water and a garden hose with a nozzle. fit a 4 inch wood block over the nozzle and start filling the bucket. When the bucket is half full submerg the nozzle and the block and note the change in the thrust on the hose. I said the you may find that the idea works but not in the direction you expected. ;)
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman , it is easy to check my statement.

get a bucket of water and a garden hose with a nozzle. fit a 4 inch wood block over the nozzle and start filling the bucket. When the bucket is half full submerg the nozzle and the block and note the change in the thrust on the hose. I said the you may find that the idea works but not in the direction you expected. ;)
 
Jan 27, 2007
383
Irwin 37' center cockpit cleveland ohio
do I have this right

You have a 1.5" hole in the side of the bow of your boat. You have an identical hole on the other side. You turn on the pump and the water comes in the port hole and exits the starboard hole. You are saying the bow will go to the starboard side. At what point, or at what size, does a thruster work? I was on a 50'er and he hit the thruster and the water gushed to starboard and we moved to port. He reversed it and the water gushed to port and the bow moved to starboard. You are saying this is wrong and can't be. So, you seem to be holding Merlin's secret. You win. I'd really like to know what you are thinking. I usually run from people like you. They scare me. They have "secrets" that we must guess at. Golum types. You didn't write a book on Human Recourses did you. They too have a "secret" and I have not been able to crack it in 40 years.
 
Jan 27, 2007
383
Irwin 37' center cockpit cleveland ohio
do I have this right

You have a 1.5" hole in the side of the bow of your boat. You have an identical hole on the other side. You turn on the pump and the water comes in the port hole and exits the starboard hole. You are saying the bow will go to the starboard side. At what point, or at what size, does a thruster work? I was on a 50'er and he hit the thruster and the water gushed to starboard and we moved to port. He reversed it and the water gushed to port and the bow moved to starboard. You are saying this is wrong and can't be. So, you seem to be holding Merlin's secret. You win. I'd really like to know what you are thinking. I usually run from people like you. They scare me. They have "secrets" that we must guess at. Golum types. You didn't write a book on Human Recourses did you. They too have a "secret" and I have not been able to crack it in 40 years.
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman, a bow thruster is a propeller in a tunnel

mounted transverse in the bow below the water line. If you do a search of Vetus you can find an assortment of bow thrusters. They are inches in diameter and they move large volumes of water at relatively low velocities. What you are talking about is a jet which will perform as you expect above the water but will entrain water below the waterline and creat a suction on the discharge side of the boat.
 

Ross

.
Jun 15, 2004
14,693
Islander/Wayfairer 30 sail number 25 Perryville,Md.
Letterman, a bow thruster is a propeller in a tunnel

mounted transverse in the bow below the water line. If you do a search of Vetus you can find an assortment of bow thrusters. They are inches in diameter and they move large volumes of water at relatively low velocities. What you are talking about is a jet which will perform as you expect above the water but will entrain water below the waterline and creat a suction on the discharge side of the boat.
 
D

Daryl

Thruster Nonsense

You only need a thruster if you don't know how to predict and control the movement of your vessel. My 28 year old trawler never had one and never will
 
D

Daryl

Thruster Nonsense

You only need a thruster if you don't know how to predict and control the movement of your vessel. My 28 year old trawler never had one and never will
 
P

Pete

motoryacht or trawler

Bob,You made a very interesting point about he cost of motoryacht vs. trawlers. Let me just make this observation a motoryacht (like you friends Sea Ray) is very similar to a trawler on fuel WHEN it is being operated at same speeds (the motor yacht will be more) The difference of course is that the motor yacht CAN go faster then the displacement speed trawler. Depending on the purchase cost you will go a long way to spend the 50k if you run the motor yacht like a trawler (6 to 9 knots). Ask motor yacht owner,get another view, or see if you can find someone who had detailed fuel cost at slower rpm's. Of course all this goes out the window when you get a heavy hand on the throttles however it would be nice to have when you needed it. You may find the motoryacht more comfy as a live aboard and it might out way some of the difference in fuel cost. There is also a "semi" planning hull that some trawler manufactures use to get increased speed (9 to 14 knots and increased fuel consumption). My suggestion is to do some very serious research and some get a "true" anticipated usage (do the math figure hours of operation times dollars for both types of boats then figure out convenience because as a live aboard you will spend most of you time at the dock despite what you think, that will give you a "real" cost and let that influence you buying decision. It would appear that the trawler has made a comeback of sorts and has gained popularity recently thus the higher cost based on supply and demand. This may be a two edge sword for you because the supply and demand of the motoryacht will be in your favor. As far as the single engine or twins a trawler with one engines is OK provided that it is maintained. A true displacement hull will waste any more power then what is needed to move it at hull speed. Depending upon size of the boat a bow thruster is a great addition and will come back to you in resale as well as every time you try to dock in a crosswind or in a tight marina. The twin engine is nice but not needed in a trawler, especially since a Boat US or similar towing service is cheaper then a second engine. Don't think you will find many single engine motoryachts. You can have a bow thruster installed depending on what size is needed from 6 to 10 thousand so that can change how you are thinking also. Good Luck with you decision ! !
 
P

Pete

motoryacht or trawler

Bob,You made a very interesting point about he cost of motoryacht vs. trawlers. Let me just make this observation a motoryacht (like you friends Sea Ray) is very similar to a trawler on fuel WHEN it is being operated at same speeds (the motor yacht will be more) The difference of course is that the motor yacht CAN go faster then the displacement speed trawler. Depending on the purchase cost you will go a long way to spend the 50k if you run the motor yacht like a trawler (6 to 9 knots). Ask motor yacht owner,get another view, or see if you can find someone who had detailed fuel cost at slower rpm's. Of course all this goes out the window when you get a heavy hand on the throttles however it would be nice to have when you needed it. You may find the motoryacht more comfy as a live aboard and it might out way some of the difference in fuel cost. There is also a "semi" planning hull that some trawler manufactures use to get increased speed (9 to 14 knots and increased fuel consumption). My suggestion is to do some very serious research and some get a "true" anticipated usage (do the math figure hours of operation times dollars for both types of boats then figure out convenience because as a live aboard you will spend most of you time at the dock despite what you think, that will give you a "real" cost and let that influence you buying decision. It would appear that the trawler has made a comeback of sorts and has gained popularity recently thus the higher cost based on supply and demand. This may be a two edge sword for you because the supply and demand of the motoryacht will be in your favor. As far as the single engine or twins a trawler with one engines is OK provided that it is maintained. A true displacement hull will waste any more power then what is needed to move it at hull speed. Depending upon size of the boat a bow thruster is a great addition and will come back to you in resale as well as every time you try to dock in a crosswind or in a tight marina. The twin engine is nice but not needed in a trawler, especially since a Boat US or similar towing service is cheaper then a second engine. Don't think you will find many single engine motoryachts. You can have a bow thruster installed depending on what size is needed from 6 to 10 thousand so that can change how you are thinking also. Good Luck with you decision ! !
 
P

Pete

Stillraining You make my point for me.

Using your figures you make my case for me. You state an average of 6.5 hours per day for 10 days or 65 hours total. Total fuel burned is 200 gallons (again using your figures) Your average speed is 6.25 mph (why are you using miles and not knots?) times 65 hours total time is 406 miles or 2.03 miles to the gallon. A trawler going the same speed buring 2.5 gallons an hour is using a gallon of fuel for every 2.5 miles. .47 differerence, Do the math this is about the cost of a good 6 pack of beer per each day used. Now using Bob question of using diesel engines and not your gas engines I belive it will even be less cost difference. Add the 50k cost difference as Bob suggested in a second post and Bob has got to live another 500 years to outspend the purchase cost difference. Bob also added some "people comfort" issues to the equation that he will need to decided on however I still contend that this is a viable option Bob should explore.
 
P

Pete

Stillraining You make my point for me.

Using your figures you make my case for me. You state an average of 6.5 hours per day for 10 days or 65 hours total. Total fuel burned is 200 gallons (again using your figures) Your average speed is 6.25 mph (why are you using miles and not knots?) times 65 hours total time is 406 miles or 2.03 miles to the gallon. A trawler going the same speed buring 2.5 gallons an hour is using a gallon of fuel for every 2.5 miles. .47 differerence, Do the math this is about the cost of a good 6 pack of beer per each day used. Now using Bob question of using diesel engines and not your gas engines I belive it will even be less cost difference. Add the 50k cost difference as Bob suggested in a second post and Bob has got to live another 500 years to outspend the purchase cost difference. Bob also added some "people comfort" issues to the equation that he will need to decided on however I still contend that this is a viable option Bob should explore.
 
Dec 8, 2007
478
Irwin 41 CC Ketch LaConner WA
Not Salty enough

I guess. I still leave my GPS's in the mph mode as a distance to time evaluation of ground speed as it's easer to compute both for me and my "non caring to learn nautical detail" all woman crew. I am personally done with power boating as a way of crusing. We still own a water ski boat and I have a fishing boat as well. But I plan on sailing for the rest of my days. Yes you get more Sq. footage in a smaller package with power. But I cant aford the fuel or the power "SHIP" needed to cruise the oceans and thats our "semi" retirement goal, so sail it is. If I get to old and week to crank a winch I'll install electric or hydrolic ones and power sails. I read of 80 year old sailers all the time still living the life. Nope no Trawler for me. I did look into Pacemakers before I bought the SeaRay. Now if your looking for lots of interior space and room for creatcher comforts they beat a trawler. Most I looked at had home refrigerators in them. Cant beat that beer storage. And if ran like a Trawler will burn no more fuel. The trick in any power boat is to lay off the throttel. Most will all burn 2.5 to 3 gal per hour. IMHO
 
Dec 8, 2007
478
Irwin 41 CC Ketch LaConner WA
Not Salty enough

I guess. I still leave my GPS's in the mph mode as a distance to time evaluation of ground speed as it's easer to compute both for me and my "non caring to learn nautical detail" all woman crew. I am personally done with power boating as a way of crusing. We still own a water ski boat and I have a fishing boat as well. But I plan on sailing for the rest of my days. Yes you get more Sq. footage in a smaller package with power. But I cant aford the fuel or the power "SHIP" needed to cruise the oceans and thats our "semi" retirement goal, so sail it is. If I get to old and week to crank a winch I'll install electric or hydrolic ones and power sails. I read of 80 year old sailers all the time still living the life. Nope no Trawler for me. I did look into Pacemakers before I bought the SeaRay. Now if your looking for lots of interior space and room for creatcher comforts they beat a trawler. Most I looked at had home refrigerators in them. Cant beat that beer storage. And if ran like a Trawler will burn no more fuel. The trick in any power boat is to lay off the throttel. Most will all burn 2.5 to 3 gal per hour. IMHO
 

Manny

.
Oct 5, 2006
983
Hunter 82? 37 Cutter Wherever the wind takes me
Ross & Letterman

How about instead of using water through the thru-hulls us some sort of air pump with a switching valve to push the air through one side or the other? But back to the trawler topic, how about a compromise? http://www.ipy.com/ShowBoat.asp?sBoat=SPCruiser Manny
 

Manny

.
Oct 5, 2006
983
Hunter 82? 37 Cutter Wherever the wind takes me
Ross & Letterman

How about instead of using water through the thru-hulls us some sort of air pump with a switching valve to push the air through one side or the other? But back to the trawler topic, how about a compromise? http://www.ipy.com/ShowBoat.asp?sBoat=SPCruiser Manny
 
Status
Not open for further replies.