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Welcome to my website. I am Eric W. Sponberg, retired naval architect, once owner of Sponberg Yacht Design Inc., lately of St. Augustine, FL. I am no longer in professional practice, and my old company and website, Sponberg Yacht Design Inc., no longer exists.

During my 37 years in yacht design, I became particularly well-known for sailboats equipped with free-standing rigs. I also did some significant designs for powerboats and motoryachts. My final boat design was an ocean-going rowboat for rowing solo, non-stop, across the Pacific Ocean. You can read about the history and development of my boat and mast designs on this, my new website.

My wife and I are preparing to move onto our sailboat to do some extended cruising. If you have reason to contact me for some advice or comment, you may do so through this website on the Contact page.

Eric W. Sponberg
Naval Architect, retired

Over the years I wrote quite a number of stories and articles about boat design and engineering that people really liked, and I did not want to remove them entirely from cyberspace. The better stuff is still here, such as:

All these and more are available for download in the Articles section of this website.