Princess 35 Here We Go

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Mnnn Might be right................. Now watch this Fred do off Topic.........................................
 
Bigplumbs said:
Surely the cost of the batteries would be loads of Wad
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Yes for brand new LifePO4 batteries for a sailing yacht or offshore cruiser. But as noted, for inland waterways pootling at 3-6 knots very little power is consumed, and distances are short so only small kWh battery pack needed. And with weight not an issue, lead acid batteries, and/or second hand batteries, can be a very cost effective solution.
And, as noted above, with a generator becomes a serial hybrid with mostly silent running, but huge range with generator on If needed.
 
Princess35 said:
Hi everybody.
Firstly a electric boat of this size is about as useful as a chocolate tea pot.
A complete waste of time. I absolutely hate electric cars and have the same opinion about boats.
It works for a little day boat as you can get up to 8 hours cruising then returning back to the yard to be put back on charge for the next day.
The cost of the batteries and the conversion would actually cost more than the whole boat itself.
When if I do end up going past London and up the meadway I need long range and not worrying about having to plug in to charge for 8 hours.
With this engine and the size of the boats tank it would probably sail to the USA and back..lol.
Which is why you’ll never see a electric ship.

Anyway
Time for this weeks final update.
Now that the engines out it’s time to start completely stripping everything out ready for steam cleaning.
Firstly I remove that old big nackered diesel heater. I was disappointed that when I had a chap from ederspacher come to service it to inform me that it’s scrap and unrepareable.
Next I drain down that big old hot water tank. It’s alittle big for a boat. It would fill a bath easiy. It’s a lot of water to heat up electrically.
But the coolant pipes in it are really corroded. So I think it has to go.
It’s definitely original from the 80s as it’s date stamped says November 1987.
Once removed I rip out all that old plumbing. It’s a absolute mash up of old joins and bits of pipes.
The old original black pipe work is actually brittle. If you bend it the pipe just snaps. No good for a new install so it all has to go.
To finish off I remove all the old engine wiring loom. It’s absolutely nackered with broken bits, bodge joins and bits of electrical tape.
So now it’s all pretty much clear down there. Just need to remove the cable and pipe clips.
Next week the real hard work starts with trying to clean it all up down there.
Hopefully if the weather holds up the vinyl wrap guys will wrap the hull.
So watch this space.
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Nothing wrong with a chocolate Tea Pot……tasty!

erm…..virtually all ships are electric drive

You’ve got a generator but ok.….put a wheezy old 4 pot back in a 35ft boat……I’m no longer excited ??
 
Mr Googler said:
Nothing wrong with a chocolate Tea Pot……tasty!

erm…..virtually all ships are electric drive

You’ve got a generator but ok.….put a wheezy old 4 pot back in a 35ft boat……I’m no longer excited ??
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Yes, as you say huge number of electric drive ships. And masses of electric drive boats on inland waters. Clearly if going coastal would need either to be hybrid, if willing to stay at modest speeds - or currently diesel if want to do planing speeds.
Not what the OP wants, which is fine. But good luck getting a Princes 35 to the USA and back. Mind you, one or two jobs to complete before ready to head west across the Ocean :)
 
Mr Eberspacher has an incentive to sell you a new one; they are pig-simple and eminently rebuildable, although the very low price of chinese copies mean there's arguably no point but I like mending things rather than skipping them. Electric drive makes a load of sense for inland cruising; depending on what your desired performance is would dictate whether a hybrid or pure electric is the way to go. Silence and lack of diesel smut is a no brainer to me, the ducks would thank you.
 
Princess35 said:
Hi everybody.
Firstly a electric boat of this size is about as useful as a chocolate tea pot.
A complete waste of time. I absolutely hate electric cars and have the same opinion about boats.
It works for a little day boat as you can get up to 8 hours cruising then returning back to the yard to be put back on charge for the next day.
The cost of the batteries and the conversion would actually cost more than the whole boat itself.
When if I do end up going past London and up the meadway I need long range and not worrying about having to plug in to charge for 8 hours.
With this engine and the size of the boats tank it would probably sail to the USA and back..lol.
Which is why you’ll never see a electric ship.
Click to expand...

Just about every modern cruise ship is driven by electric pod units -and have been for years. You seem to know very little about electric propulsion for boats (they are nothing like electric cars) and if you did even some basic research into the subject you would discover that your boat and intended pattern of use you would discover it would be a good match to hybrid electric power for relatively low cost. The electric motors are relatively cheap, easily fitted to your shaft drive. You have loads of space to fit a large low cost battery bank (the weight of which would do wonders for the stability of your boat) and you already have a generator fitted. You could then be an all electric boat for domestic services and your domestic energy requirements would exceed the energy required for propulsion - exactly why cruise ships are diesel electric. Plenty of firms offering electric systems for boats, particularly narrow boats which have similar requirements to yours. If you are serious about making this boat into a mini "superyacht" then ditch that horrible old BMC engine and go electric.
 
Tranona said:
Just about every modern cruise ship is driven by electric pod units -and have been for years. You seem to know very little about electric propulsion for boats (they are nothing like electric cars) and if you did even some basic research into the subject you would discover that your boat and intended pattern of use you would discover it would be a good match to hybrid electric power for relatively low cost. The electric motors are relatively cheap, easily fitted to your shaft drive. You have loads of space to fit a large low cost battery bank (the weight of which would do wonders for the stability of your boat) and you already have a generator fitted. You could then be an all electric boat for domestic services and your domestic energy requirements would exceed the energy required for propulsion - exactly why cruise ships are diesel electric. Plenty of firms offering electric systems for boats, particularly narrow boats which have similar requirements to yours. If you are serious about making this boat into a mini "superyacht" then ditch that horrible old BMC engine and go electric.
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I fear the OP tends not to listen to advice but just does his own thing and then gets into muddle…….. But his money and his boat I surpose
 
From Teddington to MDL Chatham is approx 70 nautical miles .
Sensible use of tides could also give any skipper some free assistance of around 2 knots for most of trip round and at a reasonable 8-10 knots .
 
Princess35 said:
I don’t need to listen as I know exactly what I’m doing. Its my boat. my project. and my money.

Im talking about fully electric that you have to plug in and charge. Like a shitty Tesla.
Obviously there’s diesel electrics. Most of our trains are diesel electric now to.
So there’s actually no physical drive from the engine. The final drive is by a electric motor.

No caption at the helm then that boat Probably did beach somewhere.
Delivery to be in Italy. Boat arrives Iceland.
Especially if it’s a any thing like a TomTom sat nav.. ?
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Given that your boat will really only be suitable for inland waterways where it is unlikely that you will ever want to run more than 8-10 hours a day, there is no reason at all why it can't be 100% electric. If you want a boat that is also capable of going into tidal waters then maybe you have chosen the wrong boat.

Not sure why you are referencing cars - boat propulsion issues are very different from cars. About the only common point is the use of lithium batteries if there are problems of space for energy storage which I would suggest is not an issue with your boat.
 
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