Goodnow Kayak Free Plans
The 16′ 8″ Goodnow kayak is stunning. It’s lines flow beautifully and it begs to be built and paddled. At 17 5/8″ wide, I’d have a hard time fitting into it, so I decided to model the kayak for a possible upscale and build. Included here is the FREE!ship file for your download and some information about the kayak.
Goodnow kayak rendered with ice in the background.
The Goodnow kayak appears in Mark Starr’s Building a Greenland Kayak
Kaper Numbers
Kaper is a resistance program used by Sea Kayaker Magazine
- 2 knots – 0.832
- 3 knots – 1.739
- 4 knots – 3.253
- 4.5 knots – 4.818
- 5 knots – 7.351
Goodnow kayak linesplans.
Hydrostatics
These hydrostatics are generated for a typical Midwestern male at 171 pounds.
- Length over all :16.679 [ft]
- Beam over all : 1.478 [ft]
- Design draft : 0.405 [ft]
- Midship location : 8.339 [ft]
- Volume properties:
- Displaced volume : 3.228 [ft3]
- Displacement : 0.092 [tons]
- Block coefficient :0.3950
- Prismatic coefficient :0.5126
- Vert. prismatic coefficient :0.6600
- Wetted surface area :16.576 [ft2]
- Longitudinal center of buoyancy: 7.912 [ft]
- Longitudinal center of buoyancy:-3.027 [%]
- Vertical center of buoyancy : 0.255 [ft]
- Midship properties:
- Midship section area : 0.446 [ft2]
- Midship coefficient :0.7707
- Waterplane properties:
- Length on waterline :14.110 [ft]
- Beam on waterline : 1.428 [ft]
- Waterplane area:12.062 [ft2]
- Waterplane coefficient :0.5985
- Waterplane center of floatation: 8.013 [ft]
- Entrance angle : 4.028 [degr.]
- Transverse moment of inertia : 1.350 [ft4]
- Longitudinal moment of inertia :103.04 [ft4]
- Initial stability:
- Transverse metacentric height : 0.673 [ft]
- Longitudinal metacentric height:32.175 [ft]
- Lateral plane:
- Lateral area : 4.387 [ft2]
- Longitudinal center of effort : 8.001 [ft]
- Vertical center of effort : 0.237 [ft]
Files
There are three files for this kayak. If you want to visualize the kayak in 3D, but don’t have FREE!ship, then a VRML (.wrl) file is below for you to click on. You will need a VRML extension for your browser. I recommend Cortona VRML from www.parallelgraphics.com. The second file is a FREE!ship file. The third is a zip that includes a sheet of stations, and the stems.
Built by Jean-Luc Bellieud
Buy me a beer if you liked this article.
March 18th, 2009 at 2:20 pm
I have used Freeship to open the file. It was OK but it is impossible to “develop plate”.
Is it normal?
I want to try to buil this kayak and I need to use this function to prepare the plywood plate.
Could you help me?
Thanks
Jluc
March 18th, 2009 at 7:22 pm
You’ll have to go into the layer menu and mark each plate as developable. You’ll notice when you develop the model, that there is major compression in places.
It might make this boat a hard one to build in plywood.
April 27th, 2009 at 1:31 pm
Thanks for your help
January 28th, 2010 at 11:18 am
Hello
A french Goodnow is born…
I did a test today on the sea.
Nice boat, easy to roll, very fast…
It was not so difficult to build it.
My son make some photos. Of course It is his kayak.
The next one will be for me, an Igdorllsuit.
January 28th, 2010 at 12:40 pm
Thats great. If you have pictures, please, post them!
July 8th, 2010 at 7:19 am
Hello.
I really want to build the Goodnow Kayak. But how do i print out the stations for stripbuilding in freeship?
Thanks Andreas
July 8th, 2010 at 7:55 am
The easiest way is to save a copy of the linesplan in dxf, then open it in a CAD program and print from there, because this will give you your stem profiles. First, specify where you want your stations. The second way is to export 2D dxf polylines.
I’m uploading 3 pdfs. One includes the stations, and the other two include the bow and stern stems.
Let me know how this turns out for you.
July 8th, 2010 at 8:42 am
Thanks for very fast answer.
I will let you know.