T-Pain Is On A Boat: Re: [Electric Boats] What kit should I choose?

Saturday, May 31, 2014

Re: [Electric Boats] What kit should I choose?

Indeed. And on days when the wind is strong enough to make it impractical, I will have to stay ashore.

Hopefully those days will be few.

On Sat, May 31, 2014 at 5:00 PM, Joe Siudzinski siudzinski@telis.org [electricboats] <electricboats@yahoogroups.com> wrote:

> 1. To get my boat in and out of the marina (which could involve 3 km
> against the wind, as we are between two peninsulars).

As always, there are tradeoffs, as at some point windspeed overwhelms
even the most powerful of drive systems, which is why I consider the
zero-velocity driving force (bollard test) to be a significant
parameter for consideration. On my cat I had actually measured the
forward and reverse thrust while tied to the dock and also empirically
determined the maximum windspeed at which the boat would 'stall out'.
Above that windspeed I would simply drop the anchor and go to sleep
and wait until the wind abated. :-)

If you have to power straight upwind, then in your scenario you
perhaps need to figure out whether you can go the 3km against what
windspeed for a given battery capacity.

JoeS.