Rick asked :
I will ask a question for sailors here and add a bit more detail on actual sailing.
Anyone who has sailed a few thousand ocean miles or more and entered a number of unfamiliar busy ports, narrow tidal channels and river bars please advise if you have not found motoring at some time an important safety requirement?
Yes of course AND over the duration of a long voyage you won’t use a whole lot of fuel anyway.
Portsmouth to Sydney via Panama we used under 250 litres of diesel. 28 (?) HP Yanmar diesel outboard.
Outboard lifted out of water of course.
When we arrived in Sydney half our diesel jugs contained red diesel.
BUT that was a boat that could sail down to 2 knots of true breeze (Shuttleworth 40)
Yes even DDW.
A Harryproa should manage something similar (depending on which one)
I think we motored through the Panama Canal for around 9 hours on and off (although annoyingly a week earlier I had _sailed_ someone else’s boat through).
The canal authority require a minimum motoring speed - I think its around 6 knots from memory.
So without a sizeable genset thats not going to work.
Of course you could always just round a few Capes
Good luck selling that to the crew
I would love an electric boat but the current energy density is too low.
Hydrogenerators like the Watt & Sea ( https://www.wattandsea.com/en/products/cruising-hydrogenerators/hydro-cruising-600 ) put out 10+ Amps at 5.6 knots which is a nice contribution to house needs when conditions permit (fine for a tradewind passage for instance) but its not also a propulsion motor and if it were it would consume a lot more than the 10 amps at which it charges.
The mounting she be easy to adapt to bidirectional use however.
And its only 4500 ish euros
So for the moment the best option IMO is liquid hydrocarbon and a vessel thats easy to move.
Oh and sensible seamanship because no matter how much power you have there is only one direction you will be heading when the wind exceeds 50 knots and thats not upwind.
__._,_.___
Posted by: Gary Pearce <gary@thepearces.com>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a new topic | • | Messages in this topic (20) |
SPONSORED LINKS
.