Design and Construction
Jensen Marine built the Cal 20 at its Costa Mesa, California plant, at times turning out as many as one hull a day through the 1960s. The boat carries a solid fiberglass hull and deck, an iron ballast keel, and a transom-hung rudder on a fin. At 1,950 pounds displacement with 900 pounds of ballast, the 46 percent ballast-displacement ratio gives her a steady, purposeful feel for the size. The 7-foot beam and 18-foot waterline produce a hull-speed figure near 5.7 knots. Most production happened across the 1960s, and the arrival of costly fiberglass resin during the 1973 fuel crisis, alongside the new IOR rule, actually pushed the Cal 20's popularity higher. Bangor Punta absorbed Jensen Marine in 1965, though the model itself carried on unchanged to 1975; the broader Cal brand later moved through several owners before all Cal boat production ceased in 1989.
Rig and Handling
Present-day Cal 20s carry easy-to-reach sail controls — backstay, jib halyard, boom vang, and main cunningham — at the crew's fingertips, and the simple rig makes stepping and tuning the mast a breeze. A 2:1 jib-sheet purchase lets the jib be trimmed without a winch, keeping the deck uncluttered and the crew workload low. On the water she shows a well-balanced helm with an easy groove, and test sailors found her a breeze to sail. The cockpit is nearly 8 feet long and self-bailing, and because the correct crew position when racing is at the forward end by the bulkhead — exactly where the crew naturally gathers — there is no need to scramble out of the cockpit to shift weight. Boats race under one-design rules covering minimum weight, sail plan, and spar, rudder, and keel dimensions, and can be sailed competitively by two or three hands.
Accommodations
Below the self-bailing cockpit the Cal 20 fits four bunks, a head, and storage bins, a remarkable amount of usable space for 20 feet of length. Period reviews described the arrangement as providing sailing with comfort and ease, and for her size she stands as one of the most practical boats imaginable. The large forward cockpit and compact cabin suit day racing and short coastal hops rather than cruising, but the layout is honest about what a 20-footer can be.
Class Life and Ownership
The Cal 20's story did not end with production. Approximately ten active fleets operate today under the Class Association across California, Oregon, Washington, Hawaii, and British Columbia, and the annual Class Championship Regatta has drawn as many as 50 boats in recent years. The event runs Gold, Silver, and Bronze fleets with separate starts, the Gold fleet alone pulling 25 to 35 high-caliber one-design racers to decide the Class Champion, and a Junior Championship sits alongside. Owners report the boat is a great platform for one-design sailing, and the SYC Sailing Foundation keeps a fleet for community use. Hulls are typically dry-sailed on trailers, and towing one behind a car is very easy, keeping ownership and maintenance costs low.
The Verdict
The Cal 20 is a Lapworth design that turned a modest 20-foot hull into the backbone of West Coast one-design racing and kept that role for half a century after production ceased. She is cheap to own, simple to rig, and deep enough in her class structure to reward lifelong tuning.
Pros
- Mass-produced (1,945 hulls) and still well supported by an active class association and multiple fleets
- Self-bailing 8-foot cockpit with crew weight naturally placed for racing
- Easy-to-reach controls and winchless jib trim make her simple to sail and rig
- Inexpensive to buy, own, and maintain; easily trailerable
Cons
- Minimal belowdecks accommodation beyond four bunks, head, and bins — a daysailer, not a cruiser
- Production halted in 1975; all Cal boat production ceased by 1989, so only used hulls exist
