The Spencer 35 Mk I represents a milestone in North American yacht building, widely recognized as the first fiberglass production sailboat of its size manufactured in Canada. Launched in 1960 and designed by the prolific naval architect John Brandlmayr, the vessel was engineered specifically to handle the challenging, often unpredictable conditions of the Pacific Northwest. With its traditional S-shaped hull and a robust, full-keel (or cutaway full-keel) configuration, the Mk I was conceived as a dedicated bluewater cruiser. It is distinguished by a sleek, low-profile cabin trunk that provides a classic aesthetic, setting it apart from its later sibling, the Mk II, which featured a more voluminous doghouse. The construction of the Spencer 35 was ahead of its time, utilizing heavy-duty laminates that have allowed many of these hulls to remain in active service for over six decades.
Spencer 35 Mk I Sailboats for Sale & Market Overview

- Make
- Spencer
- Model
- 35 Mk I
- Builder
- Spencer Boats Ltd.
- Designer
- John Brandlmayr
- Number Built
- 64
- Production Year(s)
- 1960 - ??
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| Source | Year | Make | Model | Price | Cabins | Heads | City | Country | Listing Date | |
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DISCLAIMER: We are not affiliated with any external listing websites in any way. We simply aggregate publicly available listings to make it easier for buyers to find sailboats for sale. We cannot guarantee the accuracy of the listings, so please verify all information with the seller before making any decisions.