Friday, March 15, 2013

[Electric Boats] Re: New member, new electric & solar powered motorboat

 



Thanks for the feedback Mike. Indeed, there's no EV capable of towing this boat (yet)...

The design purpose is to have a safe (not necessarily comfortable) boat when water/weather is getting rough, but its intended use is indeed on rivers, lakes and coastal area's. Windows are rated for seagoing vessels.

There's space for a 4kW generator, although I will use a portable Honda instead in order to keep the transport weight low (EU regulations).

The panels are walkable (Solbianflex), but can't be extended because of limited headroom, and (for personal reasons) I do not want the air draft to be over 5.9ft. I need to be able to navigate the Amsterdam canals and bridges;-)

I understand the redundancy aspect of having two motors, but would such a setup not be less efficient?

--- In electricboats@yahoogroups.com, "Mike Gunning" <mike@...> wrote:
>
> I like the concept of the trailerable boat. What you are creating is a hybrid because the boat towed by an on the road vehicle. That is the diesel/gas part of the system. In the water it is an electric only. Good range and elegant solution for river or lake. I would question the current design for ocean/sea operations.
> I also agree with Carter that I would prefer to see a redundant system with two inboard motors for steerage and safety. I am still not sold on the recreational sized pod especially in a saltwater environment. It appears to me to have lots of windage and rather large window area. This could pose problems in open sea activity.
> I would very much like to see a small generator option for extended operation. A 4kw generator would likely service the boat well. I would also consider extending solar cover over the cockpit and consider using walkable panels and give the boat an upper deck. You might consider give the boat a permanent or collapsible fly bridge.
> Great idea and in present form ideal for river and canal operations.
> Mike Electric Yacht of Southern California
>
>
>
> --- 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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