Name: Cork 1720
Brand: Cork

Sailing Performance & Handling

The 1720 is a dedicated sportsboat that prioritizes speed and responsiveness over stability. The design features a high power-to-weight ratio, driven by a large mainsail and a high-aspect-ratio jib. Its defining performance characteristic is its ability to plane early; in a stiff breeze, the boat easily exceeds its theoretical hull speed, reaching double-digit speeds downwind under its massive asymmetric spinnaker. According to editorial analysis from Yachting World, the boat’s handling is characterized by a "dinghy-like" feel, requiring active weight management and precise sail trimming.

The 1.72-meter draft provided by the bulb keel offers significant righting moment, but the boat remains narrow and "tippy" compared to modern wide-beam sportsboats like the J/70. Tracking is sharp, though the rudder can become loaded if the boat is over-canvassed. Upwind, the 1720 points high but demands constant attention to the backstay and vang to flatten the sails. The retractable bowsprit simplifies asymmetric spinnaker handling, making the 1720 a popular platform for teaching sailors the nuances of modern downwind tactics. While the hull is built for speed, it is relatively wet in a chop, as the low freeboard and open cockpit design allow spray to wash over the deck.

Popular Mentions & Media

The 1720 holds a storied place in Irish and British maritime culture. It was the backbone of the "Sportsboat Rule" era in the late 1990s and early 2000s. The class achieved significant visibility through its involvement in the European Match Racing Tour and its frequent appearances in major nautical publications. Its cultural footprint is most visible at the biennial Cork Week, where the 1720 class often commands one of the most competitive one-design starts. The 1720 Sportsboat Class Association maintains a rigorous set of class rules to ensure that the boat’s racing remains a test of skill rather than deep pockets.

Known Issues & Buyer’s Checklist

Prospective owners should conduct a thorough survey, as many 1720s have been campaigned hard in professional racing environments for decades.

Keel Box and Gaskets: The lifting keel mechanism is a primary point of inspection. The internal keel box can develop stress cracks if the boat has suffered a ground strike, and the rubber gaskets that seal the keel slot frequently perish, leading to significant drag and internal leaks.
Deck Delamination: High-load areas around the mast step and the winch bases are prone to moisture ingress and core compression. Buyers should use a moisture meter or perform a "tap test" to check for voids in the balsa-cored deck.
Mast Step and Rigging: The 1720 utilizes a high-tension fractional rig. Inspection of the mast step for deformation and the chainplates for signs of movement is essential. Many older boats may require a full standing rigging replacement if they have been raced consistently in high-wind venues.
Hull-to-Deck Joint: Because these boats are often driven hard through heavy seas, the hull-to-deck join should be checked for separation, particularly near the bow where the slamming loads are highest.
Osmosis: While not universal, early hulls from the mid-1990s have been known to develop osmotic blistering if kept in the water rather than dry-sailed on a trailer.

Community & Resources

The primary hub for technical support and class information is the 1720 Sportsboat Class Association. This organization manages the strict one-design rules that have preserved the boat's resale value and competitive integrity. Owners also frequently congregate on regional sailing forums to discuss tuning guides and sail selection, though the class association remains the definitive source for technical specifications.

The Verdict

The Cork 1720 is an uncompromising racing machine that offers exceptional performance for its price point. While it lacks the amenities of a weekend cruiser, it provides a level of tactical and physical engagement that few other 26-foot keelboats can match.

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