Core Sound 17 Mark 3

NEW: Builders Guide



LOA………17′-0″ [5.2] m
BEAM………5′-1012” [1.79] m
DRAFT………8″ to 2′-10″ [0.20 to 0.86]m @ DWL
SAIL Area………141 sq. ft.
WEIGHT………740-780 lbs [335-350]kg
WATER BALLAST…… 300lbs [136 kg] *DISPLACEMENT……1300 lbs (589 kg) @ DWL
*@DWL With people water ballast and gear

Following the development of the Core Sound 20 Mark 3 it seemed only fair that there should be an equally capable companion to the Core Sound 17. The CS-17 Mk3 offers the same design features as her bigger sister in a more economical package that can be towed easily by a compact car. A generous solo cruiser or weekend explorer, the 17 Mark 3 is the envy of all weekend adventurers and expedition racers.


Like the larger CS-20 Mark 3, the 17 also features the well known cat ketch rig in addition to these important features: 


  • Kick up rudder and weighted centerboard.
  • A raised deck cabin with sliding companionway hatch and hinged foredeck hatch.
  • Main and Mizzen tabernacles for quick, easy and safe rigging. No standing on the foredeck. 
  • Water ballast tank for lighter trailering load.
  • Self draining cockpit and spacious cockpit lockers. 
  • Optional "cockpit reefing" which allows for reefing the mainsail without leaving the cockpit at all. 


Core Sound 17 Mark 3 Kit Information: Click here for Current kit pricing
The Core Sound 17 Mark 3 is available to builders as a very complete CNC kit. The builder supplies the long side stringer material and timber for the building cradle. CNC cut Solid pine parts for the deck beams, transom stiffeners and hatches area all included. Plywood parts included in the kit are pictured below.
How to Buy: 

Use the link below to checkout with the kit deposit for the Core Sound 17 Mark 3 to secure your spot in our production schedule or give us a call and we will be happy to take your information over the phone. Put down deposit

Below: A new tour of a recently completed (June 2022) Core Sound 17 Mark 3

Below, Core Sound 17 Mark 3 hull #2 sailing in the Neuse River during the 2022 North Carolina Challenge. 

Designer’s Choice! Below, A tour of Graham's Core Sound 17 Mark 3.

Race History:
2016: Graham Byrnes took first place in his class in his new CS 17 Mk3 in the 2016 Everglades Challenge. Race results.



"Great work on the design and CNC skills by the way, I'll never cut out another part again! Most fun I've had building a boat."   -Aaron Pufal (CS17 MK3 #10) (see his build log)