Design and Construction
Cardell’s design combines a hand-laid fiberglass hull with a sandwich-construction fiberglass deck. A period review credits the deck construction with improving the indoor climate below.
The Balaton 21 displaces roughly 3,439 pounds. Its iron keel provides a 35 percent ballast ratio, while the fin-keel configuration gives a loaded draft of about 3.94 to 4.24 feet. The shallow draft suits marinas. With a beam of just over eight feet and a length-to-beam ratio of 2.62, the hull is narrow rather than beamy.
A displacement-length ratio near 241 places the boat among what one review called “moderate racers.” Wetted surface is about 172 square feet, and an immersion rate of roughly 534 pounds per inch indicates how little added weight it takes to change the waterline.
Rig, Performance, and Handling
The Balaton 21 carries a masthead sloop rig. Its theoretical hull speed, as a displacement boat of this length, is 5.8 knots, and its Relative Speed Performance index is 58. The builder says these boats had and still have good sailing capabilities.
The capsize screening value is 2.14, which the review notes disqualifies the boat from ocean races. Its Motion Comfort Ratio falls between 16.4 and 17.2. Taken together, the figures describe a light, manageable coastal performer rather than an offshore voyager.
Accommodations
Belowdecks, the interior is finished in mahogany, as were many production boats of the period. The sandwich deck and modest 21-foot length frame a compact cabin intended for day sailing and short stays rather than extended cruising. The mahogany joinery and the deck construction credited with improving the indoor climate define the cabin’s character.
Verdict
The Balaton 21 is a clearly focused 1970s design from a named Swedish architect and Hungarian builder. Its construction details and performance indices mark it as a light coastal sloop. The builder-attributed sailing capabilities and relatively shallow draft suit sheltered waters, while the capsize screening and comfort figures keep it firmly in the day-sailing and weekender class.
Pros
- Hand-laid fiberglass hull and sandwich-construction fiberglass deck
- Iron fin keel with a 35 percent ballast ratio
- Relatively shallow draft for marinas
- Builder-attributed good sailing capabilities across the model range
- Mahogany interior typical of period production boats
Cons
- Capsize screening value of 2.14 excludes ocean-race acceptance
- Narrow beam and low comfort ratio limit its appeal for extended cruising
