Stortriss Mk I Information, Review, Specs

Sailing Performance & Handling

The Stortriss Mk I is characterized by its predictable, forgiving nature, making it a staple for sail training and novice coastal exploration. With a displacement of approximately 550 kg and a ballast-to-displacement ratio near 36%, the boat is notably stable for its diminutive size. It typically features a fixed iron fin keel with a draft of roughly 0.8 meters, though some variations were produced to suit different regional requirements.

Under sail, the Mk I utilizes a simple fractional rig. Because of its short waterline, the hull reaches its theoretical displacement speed quickly, but it is not a performance-oriented craft. Instead, it prioritizes "sea-kindliness" in choppy coastal waters. Handling is reported to be light and responsive, though the boat can become "tender" or heel quickly in gusts exceeding 15 knots if the relatively small mainsail is not reefed early. Its tracking is helped by a transom-hung rudder which, while providing excellent leverage for steering, requires the helmsman to be mindful of following seas.

Interior Comfort & Variations

Despite its small footprint, the Mk I managed to incorporate a cabin that offers basic overnight capabilities for a young family or two adults. The layout is rudimentary, typically featuring a V-berth forward and two narrow quarter berths extending aft under the cockpit seats. Headroom is significantly restricted, requiring occupants to remain seated or crouched, a common trade-off in the 17-foot cruiser category.

The Mk I is most easily distinguished from its successor, the Mk II, by its cabin profile and window configuration. The Mk I usually features two small, separate portlights on each side, whereas the later Mk II adopted a single, longer window and a slightly raised coachroof to increase interior volume. Materials inside are a mix of molded fiberglass liners and basic teak or mahogany plywood trim, reflecting the utilitarian "sport and leisure" philosophy of ABC Fabrikerna. Sibling models built on similar principles include the Trissjollen and Triss Giggen, which were open-cockpit variations intended for day use rather than pocket cruising.

Popular Mentions & Media

While the Stortriss Mk I does not often grace the pages of international luxury yachting magazines, it maintains a massive cultural footprint in Swedish sailing literature and local media. It is frequently cited in Swedish sailing handbooks as the quintessential starter boat. The model gained minor fame in regional sailing circles for its robustness, occasionally appearing in "small boat" challenge logs where owners sailed the length of the Swedish coast or crossed the Baltic to Finland, proving the design’s inherent durability.

Known Issues & Buyer’s Checklist

Prospective buyers of a Stortriss Mk I should focus on the structural integrity of the aging fiberglass and the specific hardware of the era.

• Deck Delamination: Like many boats of this vintage, the deck uses a balsa or plywood core which can rot if water penetrates through unsealed deck fittings or stanchion bases. Soft spots underfoot are a primary "gotcha."
• Keel Bolt Integrity: The iron keel is attached via bolts that can suffer from "weeping" or corrosion. Inspect the bilge for rust staining around the washers.
• Rudder Pintles: The transom-hung rudder is subject to significant stress. Owners often report wear in the pintles and gudgeons, leading to a "loose" feeling in the helm.
• Rigging Age: Many Mk I units still carry original or very old standing rigging. Given the age of these vessels (50+ years), a full replacement of the stainless steel shrouds and stays is often a safety necessity.

Community & Resources

The primary hub for technical data and owner support is the Swedish-based community surrounding the "Triss" brand. While there is no longer a formal manufacturer support system since the dissolution of ABC Fabrikerna, the vessel is a common subject of technical restoration threads on Swedish maritime platforms like Maringuiden. Technical specifications and historical context are also preserved within the archives of the Swedish National Maritime Museums, which document the vessel's role in the expansion of recreational boating in the 20th century.

The Verdict

The Stortriss Mk I remains an excellent entry-level vessel for those seeking a low-cost, high-durability coastal sailer with more protection than a standard dinghy.

Pros:

• Extremely affordable entry point into keelboat ownership.
• Easy to trailer and store due to its 17-foot length and modest beam.
• Designed by Pelle Petterson, ensuring a balanced and safe hull form.
• Robust construction capable of handling moderate coastal chop.

Cons:

• Very cramped interior with no standing headroom.
• Performance is limited by a short waterline and heavy iron keel.
• Many units require significant "sweat equity" to remediate 50 years of wear.
• Original hardware and sails are often at the end of their functional life.