Swift's Kee 15 is the twelfth hull in David Yost's solo tripper series. The original concept was on of a fast, seaworthy tripping boat that tracked well. Over the years they've become slightly Swede form, tumblehomed and have grown differential rocker. W?L ratios have held around 6.5
Kee has more tumblehome than the immediate next design, Bell's Merlin II but has bubble sides rather than shouldered tumblehome and, due to those bubble sides, is a little wider at waterline. The bow rocker is not carried out as in Merlin II but is quite pronounced over the front 30" or so.
Osprey is a John Winters design that is wider yet and has more bow rocker than Kee 15. Both feature 4" of tumblehome. While also having L/W near 6.5 I've always felt Osprey was the better river tripper due to increased bow rocker while Kee 15 is a little faster because of the narrower waterline. ALternatively, Kee is deeper.
The main difference is fit.
While I lock into K15s pretty well, I am loose in Osprey and need to move a knee to cross heel the boat. My legs aren't long enough to fit into the chines even from Swift's relatively low sliding seat.
So you need try both; one will likely speak to you more lovingly than the other.
Kayak Motor Kit
Rescue / Throw Bags
The Kayak Wing
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