Thanks Ned, that's a good point to think about when selecting (the right) pod(s).
--- In electricboats@yahoogroups.com, Ned Farinholt <nedfarinholt@...> wrote:
>
> Yme,
>
> Two comments on your post:
> 1. Two pods provide twice the heat dissipation if temperature is a limit to power as it is on my Torqeedo 4. It drops back to 3.5kw in warm water at WOT.
> 2. While I have no data on pods there is certainly not a state of the art limit. I have had a number of homes with deep well electric pumps under 100's of feet of head and running for many years with no attention.
> Best wishes,
> Ned
>
> On Mar 15, 2013, at 5:13 AM, Yme Bosma wrote:
>
> >
> >
> > Carter, thanks for the comments.
> >
> > As for the solar roof, I do not expect to run the boat on solar only. lthough it will work fine on sunny days on the many European inland waterways where there is a speed limit (3-4 knots). I have a Honda portable generator as a backup. And there are charging stations all over the place, so with a battery range of 50 miles I should be fine.
> >
> > Are you worried about the pod not being watertight (seals)? Would a twin screw setup not be less efficient compared to a single pod with a large prop?
> >
> > --- In electricboats@yahoogroups.com, Carter Quillen <twowheelinguy@> wrote:
> > >
> > > First thing: Awesome concept! And I like the basic design of the vessel.
> > > �
> > > But you don't have enough solar collection area. Cover every square inch you can find and then some with the highest efficiency solar cells you can find if you want to push that boat with solar energy. If you plan on making it a diesel hybrid with a token solar panel then you're fine�but if you really want to get around on the Sun, you'll need�a lot more solar panels.
> > > �
> > > Also, I'd forget the pod and go twin screw with inboard electric motors. Will cost less, give you more redundancy, and perform better. That's just my professional opinion.
> > > �
> > > Cool project, go for it!
> > > �
> > > Carter
> > > www.archemedesproject.blogspot.com
> > >
> > > From: Yme Bosma <mail@>
> > > To: electricboats@yahoogroups.com
> > > Sent: Wednesday, March 13, 2013 3:17 PM
> > > Subject: [Electric Boats] New member, new electric & solar powered motorboat
> > >
> > >
> > >
> > >
> > > After having sold our Lagoon cruising catamaran on which we just finished a 1 year and 10.000 mile trip to the Caribbean, it is time for something different...
> > >
> > > We are now in the process of designing and building a fully electric and solar powered 33ft motorboat. Trailerable, easily maintained, minimum (air) draft, comfortable, ready for all seasons, safe at sea. She will be powered by a 10kW steerable pod, running on a 30kWh lithium battery pack and 2kWp solar panels. We are currently finishing the design, selecting the (Dutch) yard where she will be built, and finalizing the specifications with several suppliers. Hull number 1 will be ours, but I'd like to see whether there's a broader interest in this project, especially when prices of solar panels and batteries are coming down.
> > >
> > > If you have any feedback, tips or comments, I'd love to hear them! For images and more information on what we are doing, please visit http://www.arviro.com/.
> > >
> > >
> > >
> > > Basics
> > >
> > > * Length 9,99m / 32.8ft����
> > > * Beam 2,50m / 8.2ft����
> > > * Draft 0,75m / 2.5ft����
> > > * Air draft 1,80m / 5.9ft����
> > > * Headroom 2,00m / 6.5ft����
> > > * Weight 2700 Kg / 6000 pounds����
> > > * 10kW steerable pod����
> > > * 30kW lithium battery pack����
> > > * 1500Wp solar panels����
> > > * 1200 liter / 320 gallon water����
> > > * Built in 5mm / .2 inch aluminum����
> > > * Cruising speed: 6 knots����
> > > * Battery range: 50 nautical miles����
> > > * 100% made in Holland
> > >
> >
> >
>
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