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Oz Core Sound 17 build

Gira Gira

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I’m John, I enjoy reading all your stories & thought I might chime in.

This is my core sound 17 I’m building in Australia.

I was attracted to the design by the cat ketch rig, capable seaworthy hull & potential performance.

I started In April & am about 300hrs into the build. I hope to launch before Xmas.  As well as the work on the hull & deck, the foils & masts have been completed.
As the build has progressed I’ve been more & more impressed with the R&D and attention to detail which has gone into the design.

I grew up in a sailing family and have raced performance sail boats most of my life. In recent years much of it solo ocean racing .
Anyway I’m in my mid fifties now & in the last couple of years have turned more to cruising. I hope to complete some challenging coastal passages in the new boat. 

Cheers John






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  • 2 weeks later...

11 minutes ago, Gira Gira said:

G’day, the last couple of weekends I have, undercoated the topsides, antifouled with copper powder epoxy mix and played around with aligning the masts. This weekend I hope to top coat the top sides, fit the gunwales and mast bases.







My son called in after work and looks very happy with being roped in to helping with the boat.

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  • 3 weeks later...



Looks like your build is coming along well.  Have made some modifications to the stock design. Perhaps some with your plan for coastal cruising in mind. I wonder if you could walk us through a few of the highlights.  Am I seeing a foiled daggerboard slot? Are you going with the third step method for reefing? Also that looks like a large raised rear deck. Forgive me if I am mistakenly seeing things in the photos. Also I am only casually familiar with the CS17 but I admire the boat and think it fills a wonderful size niche not too small, not too big, just about right.

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  • 2 months later...

Hi Nick

I’m in Maianbar NSW.

Good to hear of another CS17 in Oz.

The original plan for this boat was to launch by Xmas & then head down your way & sail in the Tawe Nunnugah 2021. Well that didn’t happen...

I’m only a few weeks away from launching, picked the sails up yesterday and have mostly just the masts to rig and a few other things...

Maybe we can catch up some time, the plan is still to get to Tas & do some cruising.




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Joe Anderson

Sorry for being so late responding to your post, I missed it somehow.

You are right I have changed a few things from the plans.

The dagger board is the main one, this is why;

I already had a rudder blade off a Elliott 770 which was the right size for the CS17 centreboard so that saved building one.

This boat will be kept in the water at a jetty, the dagger board case will be easier to clean off the marine growth inside the case.

Where I sail the dagger board won’t be a problem.

I did consult with Alan & he very kindly sent images & dimensions for the centre of effort, to place the dagger board case.

The raised and extended aft seat;

This was mainly so I can hang an outboard motor off the back without needing a bracket or well.

The seat was extended forward to make storage for the fuel tank & a stern anchor underneath and get the weight of these further forward in the boat.

I put a part bulkhead in to support the centreboard case and filled the forward  seat in to create more storage and a sleeping platform.

I extended the forward mast tube above the foredeck and made a fibreglass boot on the main mast to go over the tube to help keep water out of  the mast tube (it also has a drain hole). This is again because this boat will be kept rigged on the water.



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