Design and Hull Form
The 320's most consequential departure from Catalina convention is how the mast was moved forward, enlarging the mainsail while shrinking the jib. This shift lets the boat be sailed much like a fractional rig: depowered by furling the jib before touching the main, a significant advantage for the cruising couples Casal had in mind. The hull itself features a finer bow entry and near-plumb bow that cuts through chop cleanly, while beam maximum is carried well aft to open up the cockpit and belowdecks volume simultaneously.
Underwater, the redesign was equally deliberate. The rudder grew larger but shed chord depth, producing a higher-aspect shape that generates more lift per square foot of wetted surface. The keel — available as a standard deep fin with bulb or a shallower winged alternative — was narrowed at the root to shed drag and lower the center of gravity. Together these changes push the 320 toward genuine upwind performance without demanding a racing crew to unlock it.
Rig and Handling
On the water, the results are tangible. In testing, the 320 tacked easily and pointed to within 40 to 45 degrees of apparent wind with only a mainsheet and vang for sail control — sailors who add a Cunningham and adjustable backstay report further gains. The helm is well-balanced to the point of requiring time to find the sailing groove, and once in it the boat buries its shoulder and rewards good helmsmanship with bursts of speed. Under power, the three-cylinder Yanmar 3GM30F is responsive enough that one owner described the boat as steerable backwards through a slalom course.
The Lewmar Ocean series self-tailing winches ease sail handling considerably for short-handed crews, and halyards are led aft to clutches on the cabin top. One recurring owner note: the solid vang and topping lift controls were not led aft from the factory, a common complaint that leads most owners to eventually run additional lines. Downwind, the fractional-style rig benefits from a cruising spinnaker; sailing deep jibe angles under genoa alone leaves performance on the table.
Construction
Catalina's boatbuilding credentials are substantial, and the 320 reflects the company's accumulated knowledge. The hull is solid fiberglass — nine alternating layers of mat and roving, with vinylester resins on both exterior skins for blister resistance. The bottom is built up to a full inch of laminate thickness. The hull-to-deck joint uses a shoe-box arrangement with vertical and horizontal mating surfaces, a wood section bedded in filled polyester, and stainless fasteners on seven-inch centers — a genuinely strong joint. A tapered double-spreader Sparcraft mast steps on deck but transfers loads through a compression post directly to structural beams, keeping stress out of the deck.
The deck is plywood-cored; the cabin top uses end-grain balsa. Interior molded fiberglass liners add hull stiffness but restrict access to areas behind the pans — a real-world limitation acknowledged even by the factory.
Accommodations
Belowdecks, the 320 consistently surprises visitors expecting 32-foot proportions. At nearly 12 feet of beam, the boat feels bigger than a 32-footer, a perception reinforced by varnished ash battens, teak bulkheads, and a teak-and-holly sole. Two Lewmar deck hatches and ten portlights (four opening) pull in natural light and ventilation throughout.
The forward cabin sleeps two adults and features removable main bulkhead panels that create view corridors to improve both the sense of space and air circulation. The aft stateroom is the 320's most talked-about feature: a queen-size berth with standing headroom tucked beneath the cockpit. One 6-foot-2 owner reported comfortable cruising there for a full month. The head is compact — sink, toilet, and shower with its own sump — and access to head hoses runs through the back of the medicine cabinet. The galley to port carries a refrigerator, two-burner stove-oven, and adequate storage for coastal cruising, though extended passages will prompt creative stowage solutions.
The nav station has an adequate chart table, though the electrical panel occupies prime real estate better suited to instruments — owners adding radar and autopilot often find themselves installing a secondary panel.
Known Issues
Early production boats surfaced two recurring problems that Catalina addressed in later hulls. The first was inadequate wiring runs buried beneath the liners, causing chafe and failures; those boats were rewired and fitted with PVC conduit, and subsequent models were redesigned to eliminate the routing. The second was a shallow bilge that allowed water to slosh amidships; early owners received retrofitted baffles, and Catalina eventually retooled the molds to create deeper sump cavities. Buyers of early-build examples should verify both repairs were performed.
The liners that give the interior its finished, spacious feel are a double-edged feature: they restrict access to parts of the hull, complicating any repair or inspection that requires getting behind them. This is not unique to the 320, but it is worth factoring into any survey.
Refits and Upgrades
The factory rig leaves meaningful performance gains uncaptured. Adding a Cunningham and adjustable backstay are the upgrades most owners pursue first, enabling the fully-battened main to be properly shaped across a wider wind range. Sailors who race on PHRF should expect to replace the furler-mounted genoa with a purpose-cut sail; the Schaefer 2000 furler is mounted above deck to improve visibility, a layout that trades some genoa efficiency for a cleaner foredeck. A spinnaker adds a meaningful downwind dimension that the stock rig lacks.
Owners adding instruments, radar, and autopilot will commonly need a second electrical panel beyond the factory installation. The cockpit's four Lewmar winches are adequate for cruising but insufficient for spinnaker work; two additional primaries belong on any racing-oriented refit list.
The Verdict
The Catalina 320 is what happens when a production builder commits to solving a specific problem — handling a cruising sailboat is hard enough without fighting the rig — and actually succeeds. The forward-shifted mast, redesigned keel, and deep cockpit make this a genuine cruising boat for couples rather than a watered-down racing design. Early-build wiring and bilge issues are well-documented and correctable; the liner-restricted interior is the one structural compromise that simply comes with the package.
Pros
- Fractional-style rig balance makes shorthanded sailing genuinely manageable
- Queen berth with standing headroom is exceptional for the size class
- Vinylester hull construction with strong hull-to-deck joint
- Responsive helm and competitive upwind angles for a production cruiser
- Spacious T-cockpit with generous storage
Cons
- Vang and topping lift controls not led aft from the factory
- Interior liners restrict hull access for inspection and repair
- Downwind performance requires a spinnaker to be competitive
- Nav station electrical panel placement crowds out instrument space
- Early hulls (pre-retrofit) may have wiring and shallow-bilge issues needing verification
