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20'/22' Kennet Slipper Launch
Full Plans
$280 England & EU
$238 USA/Elsewhere 
Study Plans
$32 England & EU
$27 USA/Elsewhere 

The Kennet can be built either as a 20’ or a 22’slipper launch details and panel shapes are given on the plans for both versions. She has a ‘V’ bottom forward which flattens out as it runs aft giving an easily driven hull shape which has plenty of grip on the water. The standard arrangement has 2 cockpits with comfortable seating for 4 or 5 people. Details of engine installation based upon a Yanmar 20 hp engine are shown on the drawings along with details on how to make your own rudder but we would be pleased to advise on the installation of other units.

Construction can either be by the ply on frame method using oversized hull panels which are fixed to a conventional framework or by the stitch and epoxy method using pre-shaped ply hull panel shapes. The launch can be fitted out in basic form, or she may be used as the basis for an extensively furnished craft with teak decks etc.

Below is a Kennet being beautifully built by Greg Clapp in Australia - and finally launched.

Below is the cockpit of an example by John Westlake.

The beautiful example below is by William Hide who built her at the Lyme Regis College of Boat Building.

20'/22' Kennet Particulars

LOA 20'/22' 6.1/6.7m
Beam 5'7" 1.7m
Hull Mid Depth 2'11" 0.9m
Draft 1'10" 0.56m
Approx. Dry Weight 1350 lbs 610 kg
Engine 9-20 hp inboard  

Hull Shape

V bottom single chine
Construction Methods Ply over frame
Major plywood requirements for hull 9 x 6mm sheets
11 x 9mm sheets
Guidance Use 4-5 adults
Drawing/Design Package 5 x A1 drawings + 4 x A4 instruction/spec sheets
Additions and alterations included with the plans Panel/frame shapes for 21'9" x 5'7" (6.63 x 1.7m) version