another idiot with mad ideas, new boat build

ok, ver productive day. especially on some areas I am weak at. Like electrickery... At least now I have a plan to work to.
a very decent chap sat me down and explained what was on the market, and what did what... Splendid.
from this and a few other people I have spoken with, going with a victron quattro plus 24.
main system voltage 24v. now that the benefits and pitfalls have been explained.

the above base for a system, gives me the chance to undersize the genset than would normally be, for example, during startup current for the compressor. the batteries will take up that shortfall, allowing the generator to work at nearer its optimum, than been sized up for peak loading (ie start up currents)... am I making sense... (confusing myself anyway )


boat wise, I have put the drawings up above. the jury is still out with me. I have asked a colleague to have a look, (ex sunseeker, now designs anchor clankers and diving support vessels for us :)
will post feed back later. As much as Hans is very enthusiastic about his new design, its look does not work for me. Technically, it may be beyond brilliant, but this I can not comment on, as its far beyond what I know of underwater shapes. Except it has no bilge keel like at work :)
 
"the above base for a system, gives me the chance to undersize the genset than would normally be, for example, during startup current for the compressor. the batteries will take up that shortfall, allowing the generator to work at nearer its optimum, than been sized up for peak loading (ie start up currents)... am I making sense."

Yep, perfect sense - the start-up current of a compressor motor, where it immediately has to start pumping, can be several times the normal running current.

Can't say I'm a fan of that new shape - don't like the bow and how much is that big piece of glass (or whatever) going to cost.

Great project tho' Rob.

Paul
 
paul.norton said:
"the above base for a system, gives me the chance to undersize the genset than would normally be, for example, during startup current for the compressor. the batteries will take up that shortfall, allowing the generator to work at nearer its optimum, than been sized up for peak loading (ie start up currents)... am I making sense."

Yep, perfect sense - the start-up current of a compressor motor, where it immediately has to start pumping, can be several times the normal running current.

Can't say I'm a fan of that new shape - don't like the bow and how much is that big piece of glass (or whatever) going to cost.

Great project tho' Rob.

Paul
Click to expand...

The new hull design seems to be totally flat bottomed........:confused:
 
it does have a concave aft, section, at the last third.
i dont thing unless you see the rest of the 3d models you get the full impression. either way, think I am going with the original 50, or the 46
 
Have you looked at Nordhavn forums and info. I know they don't build boats fast enough for you but they do build very robust mile crunchers. Their system and designs are for owner maintenance and reliability.

Good articles on stabs and electric demand etc on their website.
 
Speaking of sunny.
Climate control, air conditioning, heating, hot water....
thoughts please, what are you using, any good points, and bad.
I have a diesel fired heater in clymene, and it works great. but thats only heating, and not water.
If I want hot water and Im on anchor, I need to fire a main engine, which is a bit of a joke.
I have looked at some central heating systems today, same as I have at home really, and they looked fine. but thats not air con either...
two seperate systems maybe the way to go.
what are con do you use and why ???
 
I have marinair reverse cycle aircon which heats and cools. Very effective at both. However heating becomes limited when sea temp drops below @ 8 degrees. thats no problem in the med but UK waters would be useless in winter. I have had eberspacher heaters in the past but I find they dry the air out too much and the ticking pump drives me nuts despite relocating, isolating etc. In the end I found electric fan heaters or oil filled electric radiators very good in the UK. But at anchor require a gennie.
 
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Robg71 said:
i dont thing unless you see the rest of the 3d models you get the full impression. either way, think I am going with the original 50, or the 46
Click to expand...
Rob, I wouldn't rule out the new design just because the old one looks sleeker on paper.
I can see some very good reasons behind the new hull design, for a boat meant to be neither a pure trawler nor a fast planing boat.
And I would also think that most of what you don't like in the new design will be almost unnoticeable when the boat is where she's meant to be, i.e. in the water.
Just a thought, anyway. Of course it would be interesting to see the real thing, or at least a 3D model.
 
Rob, I wouldn't rule out the new design just because the old one looks sleeker on paper.
Click to expand...

A number of years ago I saw a design for a Catarmaran with two side by side masts, in tandem not one behind the other on each hull. The designer spent ages trying to convince me that every boat would have them in a few years time.
Crazy or what?

Flat bottomed sea going planing boat, it'll be a first.

Be careful lest you become the Guinea pig!
 
all very true comments.
I will be waiting until after I have seen more reports.
On is being built in holland in a couple of months, so we shall see what happens with that, and how it goes.

there is no rush at the moment.
And I still have not decided if the 46 is enough. decisions decisions.
 
+1 for option one. Assuming the shotblasting and all the work done on the bare metal hull is of decent standard and it's not rotting away inside already ;)

Rob for what you have in mind, I think it's a great bargain!

V.
 
vas said:
+1 for option one. Assuming the shotblasting and all the work done on the bare metal hull is of decent standard and it's not rotting away inside already ;)

Rob for what you have in mind, I think it's a great bargain!

V.
Click to expand...

Looks fantastic.....
Is it a semi-displ., or a planing hull?
 
rustybarge said:
Looks fantastic.....
Is it a semi-displ., or a planing hull?
Click to expand...

Googling Bruce Roberts Waverunner come up with a 45 footer which it claims make a maximum speed of 31 knots with 2 x 250 hp water-jets.

This boat seems to be a little longer -about 0.9 metres - is it the same as the 45?

Paul
 
Apparently..(accordiing to bruce roberts) this looks like a 44 with an aft bathing platform added. He didnt give me the performance details, which is really what i was after. Just a mention really of getting all the plans to make sure there not fake/fraudulent copies....

I get the impression mr Roberts is a good salesman. Just my opinion. But thats what he is there for....
Website does not give performance figures, weights, speed etc... Wwhich i find annoying.
 
Question.
Hydraulics.... Yes or no
Am i better off going to 24v or hydraulics... Is it possible to run a pto from a generator?
Am i best just running the generator to power a hydraulic pump.?
Am i best of forgetting hydraulics full stop... Will i regret that later....
Possible uses, bow/stern thrusters. Anchor capstan/windlass.
 
paul.norton said:
Googling Bruce Roberts Waverunner come up with a 45 footer which it claims make a maximum speed of 31 knots with 2 x 250 hp water-jets.

This boat seems to be a little longer -about 0.9 metres - is it the same as the 45?

Paul
Click to expand...

are water jets so much more efficient than propelers???

2X250 is too low for such speeds, no?

so it's a planning hull after all, the bow definitely looks like

V.
 
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