Austral was a custom design for Chris and Penny Morton, who built their boat An Old Captivity in Australia. She fell into disrepair after they sold her, and is now being rebuilt (photos below).

  • Specifications and Lines

Austral is a moderately heavy boat (11,000 lbs), with a displacement/length ration of 307. Just over a third of her weight (3,850 lbs) is in ballast. Her displacement is calculated with a full complement of cruising gear. She is easily driven by the either gaff or Bermudan rig, both of which spread about 500 of working sail.

Austral is designed to be strip planked, with fiberglass sheathing or veneer overlay.


These show the rebuilding of An Old Captivity by Russ Jackson in Tasmania


Buying plans

All plans are sold as PDFs. These are high-resolution files, and the same as I would use to print the drawings if I were to send paper copies. Why PDFs? Because this eliminates the cost and hassle of shipping, and allows you to print extra copies as needed during the build (and you will need to after a few epoxy, 5200, and coffee spills). They can be printed at most good copy shops.

Payment options

  • The simplest: via PayPal, using a credit card, debit card, or PayPal account. Just use the buttons below. Note that you don't need a PayPal account to pay via credit or debit card.

  • Payment by check: I can accept checks in US dollars drawn on US banks. Please send the check to me at the following address: Mark Smaalders Yacht Designs, 244 Heffalump Lane, Lopez, WA 98261 USA. Note: when paying by check, informing me of your order by email ( will speed up processing!

  • Bank transfer: I can accept payments in US dollars and a few other currencies. Send me an email to inquire.

Austral Study Plans - just $10

If you're seriously interested I encourage you to order study plans. These include 8 sheets of drawings (sent as high-resolution PDFs. exactly the same as the building plans), and the Construction Guide, all for just $10.

These will be emailed to you, usually within 24 hours of your order.

Choose study plans on the drop down menu, and choose your payment option.

Austral Building Plans - $250

The plans for Austral include 18 sheets of drawings. These are high resolution pdf files, and I will email them to you, usually within 24 hours of your order.

Select Building Plans on the drop down menu, and choose your payment option.