
Here is a short video showing an early prototype surfing in some whitewater on the Bow River here in Calgary.
The back story to this piece is that I spent quite a few summer days last year paddling down the bow river, playing in the eddies and current. From this experience I literally had a dream about a boat that could use the force of the river to float upstream. During a recent trip to BC I found myself camping next to a suitable river, so I spent a few hours whittling my idea from some scrap cedar, the result wasn't pretty but it proved the concept.
Further research taught me that the idea is not entirely novel, a similar rig is used for fishing in Sweeden as well as the otter boards on trawlers and mine sweepers. Oddly enough when I was purchasing some spectra line for this project from an absolutely fantastic kite equipment supplier in Airdrie I was informed about another gentleman who has applied the same principle for swift water rescue.
On this site you kan see what we call a gierpont in the Netherlands http://www.voetveren.nl/sub-overzicht/detail/Ge-0017.htm
ReplyDeleteOn this picture you can see the small boats that carry the cable that is ankerd on the riverbed http://www.voetveren.nl/sub-overzicht/detail/img/opheusden2.jpg . By changing the angle to the flow you can go to one of the riverbanks.
Thats fantastic, thank you sharing those links.
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