Electric powered boat was a term that, when I heard it first, was such as putting aluminum foil inside the mouth area. It jarred in my own mind being an association of components, unsuited to exist in proximity utterly; electricity and salt drinking water namely. It was about ten years ago and the process was being watched by me of a pioneering installation. A vintage and tired diesel has been taken off the a wooden sail boat much like my own as the bilge region was stripped clear and re-painted in whitened enamel. When all has been clean and bright a little and I believed ‘puny’ electric engine and its handle apparatus was set up in its place.
Electric powered boat; I couldn’t think it. I believed the Owner to become barking mad. That which was he thinking?
But I’ve since changed my thoughts. The source of the conversion to electrical boat enthusiasm, much like Saul’s transformation on the path to Damascus, was a movie I witnessed of a catamaran powered by two parts down outboard legs lately, with motors installed in the particular propeller pods; in other words the little bit that folds into the drinking water. Although I’m a vintage boat nutter, I has been agog watching this movie and in love with the idea in every of a nanosecond.
The boat electric cats and thing it appears, is a relationship of great convenience. Firstly getting the deck section of suburban home roof at one’s disposal, presents no nagging issues either of practicality or aesthetics, with regards to where you can plant the solar power panels. If your allowance shall set you back it, it’s possible mount plenty of panel capability on a cat’s deck, to power a little city if you’re therefore inclined. On a mono-hull however, you’re limited when it comes to opportunities for placement also to my eye, they look hideous mostly. But multi hulls are usually sensitive to weight highly, meaning that once you pile on excess weight, performance drops sharply.
That’s where mono-hulls and old sail-boats have one great advantage. Many aged wooden sail-boats possess supplementary internal ballast; namely pigs of guide in the bilge. For a power boat conversion, the guide pigs are changed by the batteries so the net weight increase may very well be negative. Ballast is not any longer just dead excess weight.
Secondly; there’s the set prop vs feathering prop problem. Unless you opt for a fabulous and expensive fabulously; Hundested adjustable pitch & reversible propeller, there’s a concern with energy on a mono-hull, for the reason that you generally require a fixed prop set up if you need to cost the batteries under sail. It might be a great pity will be this re-charging ability were to be dropped.
I’d want to fit a power device to my 72 12 months old wooden sail-boat monohull, but We don’t want a set prop. The three bladed affair presently in situ creates therefore very much drag that you could have the eddying of the drinking water on the rudder under sail. It must take into account of a knot under sail, which must translate to 20 odd nautical miles in a day.
When you can simply fold the complete prop and shaft up out from the drinking water to lay flat contrary to the hull, it solves several issues all at one time not the least which is the issue of accurate motor alignment in a confined area. The second problem may be the existence of a stern gland which is a discomfort in the essential orifice. The 3rd problem may be the prop itself. A feathering prop in conjunction with a diesel, is a treatment for drag, but I’ve seen big problems due to jammed mechanisms so when they put on, they rattle. So a feathering prop to my mind is another damned thing to go wrong just.