scoobert
Has Left the Room - Banned from VTCOA!
don think there is money in tugs anymore.
the boat i am aiming for
- Thread starter scoobert
- Start date
Scrambler1
Full Access Member
Scooby I'll give you a real life example of running a planing hull at displacement speeds. This is my boat and I have it pretty well figured out after 800 hrs running it.
38' Rampage Express
Twin 500hp C9 Cats
Heavy Cruise 28knots (80% load on engines)
Light Cruise 23knots (70% load on engines)
Combined burn at 25knots 36gph
Combined burn at 9knots 10gph
Idle ~5knots at combined 5gph
There is some savings from running a planning hull below planing speed, though it is not wildly dramatic. One HUGE difference between a planing hull and a displacement hull is the balance. A boat like a Nordhavn has LOTS of ballast down low as well as soft chines. This keeps the boat from wallowing at low speeds and chine slapping. A planing hull losses a huge amount of stability at low speeds and will pitch and roll in bigger seas. I run ~70 miles each way fishing most of the time, I usually run 9 knots out at night while people sleep and run home at cruise. 9 knots is as slow as is comfortable, slower than that and the boat will pitch and roll enough to knock you out of bed. But for an idea of fuel savings. Out of 400 gallons if I run at cruise both directions as well as trolling around I burn 260 gallons on average. Slow one direction I burn around 220 gallons.
One other consideration is that displacement hulls are powered to run at a normal load at low speeds. I don't know what the impact would be on the life of big diesels to always run them at less than 10% load. Diesels live the longest at a steady load between 70 and 80%.
Bottom line if you want economy, buy a hull meant to do that. If you want speed buy one of those. Neither will do both disciplines worth a damn.
38' Rampage Express
Twin 500hp C9 Cats
Heavy Cruise 28knots (80% load on engines)
Light Cruise 23knots (70% load on engines)
Combined burn at 25knots 36gph
Combined burn at 9knots 10gph
Idle ~5knots at combined 5gph
There is some savings from running a planning hull below planing speed, though it is not wildly dramatic. One HUGE difference between a planing hull and a displacement hull is the balance. A boat like a Nordhavn has LOTS of ballast down low as well as soft chines. This keeps the boat from wallowing at low speeds and chine slapping. A planing hull losses a huge amount of stability at low speeds and will pitch and roll in bigger seas. I run ~70 miles each way fishing most of the time, I usually run 9 knots out at night while people sleep and run home at cruise. 9 knots is as slow as is comfortable, slower than that and the boat will pitch and roll enough to knock you out of bed. But for an idea of fuel savings. Out of 400 gallons if I run at cruise both directions as well as trolling around I burn 260 gallons on average. Slow one direction I burn around 220 gallons.
One other consideration is that displacement hulls are powered to run at a normal load at low speeds. I don't know what the impact would be on the life of big diesels to always run them at less than 10% load. Diesels live the longest at a steady load between 70 and 80%.
Bottom line if you want economy, buy a hull meant to do that. If you want speed buy one of those. Neither will do both disciplines worth a damn.
scoobert
Has Left the Room - Banned from VTCOA!
not looking for speed.
if i found a large 40' full displacement hull for 100-180, i would have it.
everything in that range has been far too old, or labeled "custom" and would be impossible to finance.
scoobert
Has Left the Room - Banned from VTCOA!
i think what i will do is start out in a 40' motor yacht, then move to a nordhaven when i sell the house. the 47' nordhaven will do everything i ask. i can probably get one for 400ish.
Scrambler1
Full Access Member
And it's well built and will last you a LONG time. You're on the right track.
scoobert
Has Left the Room - Banned from VTCOA!
scoobert
Has Left the Room - Banned from VTCOA!
do you think the 41' maxium will be large enough to live on?
Scrambler1
Full Access Member
For just you and a motoryacht layout? Sure. It's clearly not going to be like your house from a closet and storage space perspective but certainly liveable if you're into boat living. Hell people live in apartments with about the same usable interior space. Might consider remodeling a bedroom into a closet. Most marinas have washers/driers you can use, at least in the US. Find one with a full kitchen, not just a microwave and a cooktop.
scoobert
Has Left the Room - Banned from VTCOA!
need an office too.
Scrambler1
Full Access Member
Just look around and see what kind of layouts are available. Different brands offer different arrangements of bedrooms, galleys, and common areas. Likely still possible but you may consider 45' if that gets you an extra bedroom or a larger master cabin that can have a desk.
You will want a sedan bridge in the 40-50 range if you want to live on it. I have a 40' Express cruiser with twin 7.4s. You can do everything on it EXCEPT laundry.
The one big thing you were missing before is maintenance. Boats are really expensive to maintain and maintain well. Take your estimate, and quadruple it
The one big thing you were missing before is maintenance. Boats are really expensive to maintain and maintain well. Take your estimate, and quadruple it
scoobert
Has Left the Room - Banned from VTCOA!
its going to be on a trailer when not in use
scoobert
Has Left the Room - Banned from VTCOA!
if i was buying today i would buy this:
http://cgi.ebay.com/ebaymotors/Beau...93108?pt=Power_Motorboats&hash=item45f80c3574
i am not a person who is doing this for a status symbol.
that would be the PERFECT first big boat.
if i came in a little hot and banged the dock, i would not become infuriated.
http://cgi.ebay.com/ebaymotors/Beau...93108?pt=Power_Motorboats&hash=item45f80c3574
i am not a person who is doing this for a status symbol.
that would be the PERFECT first big boat.
if i came in a little hot and banged the dock, i would not become infuriated.
Ive been boating a long time and i am not sure you would come across many that would suggest a 46 footer as a first boat. The way this thread started i kinda assumed you were a seasoned boater. You really need to learn the nuances of boating if you haven't already. You will find wind very tricky when docking. Newer boats that size might have bow thrusters that make manuvering easier.
i've driven and docked a 60 footer that had the new volvo pod system that made it SIMPLE. it was awesome. I would go that route on my next yacht.
As far as trailering I'm sure you that whole bit better than in. A 45 footer is prabably at least 25,000 lbs and requires special licensing to trailer due to the beam...probably 12'6" or so in that range.
i've driven and docked a 60 footer that had the new volvo pod system that made it SIMPLE. it was awesome. I would go that route on my next yacht.
As far as trailering I'm sure you that whole bit better than in. A 45 footer is prabably at least 25,000 lbs and requires special licensing to trailer due to the beam...probably 12'6" or so in that range.
belgiumbarry
Full Access Member
a '89 plastic tupperware box
:dontknow:..... size will still be the same after 20 years but i assume half time cruising and half time working on all kinds of problems... been there.....
scoobert
Has Left the Room - Banned from VTCOA!
have had a 25 for 3 years. i can dock flawlessly. even in cross wind.
hauling is my occupation. i could move a 26' wide boat
i could move a 26' wide boat
Wish I was so lucky. I'm looking to move a 12.6 beam 40 footer from Atlanta to Charlotte and its a pain in the azz....
scoobert
Has Left the Room - Banned from VTCOA!
you need to call the correct person, want help?
FATJACK
Full Access Member
Scoob can get it moved for you. He apparently knows what he is doing and pretty damned good at it.
scoobert
Has Left the Room - Banned from VTCOA!
i wouldn't move it myself. too small for me to mess with.
my biggest recommendation would be to use uship.
someone with a hydraulic trailer will come along and do it in a day.
12.5 is not even an escorted load in GA or NC.
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