Design & Construction
The 400 is a moderate-to-light displacement cruiser; the MkII specifically features a hand-laid fibreglass hull and a balsa-cored deck, with solid fibreglass in high-stress areas where deck hardware is mounted. The standard underbody pairs a fin keel with a bulb and spade rudder, drawing 6′11″ (2.11 m); an optional wing keel reduces draft to a more gunkhole-friendly 5′4″ (1.63 m). Published displacement figures vary by source and generation: the reviewed source cites 19,700 lb (8,936 kg) for the MkII fin-keel version and 20,500 lb (9,299 kg) with the wing, while the boat's specification record lists a notably lighter figure closer to 18,000 lb, likely reflecting the earlier base-model 400 rather than the MkII — buyers should confirm actual displacement for any specific hull rather than relying on a single published number. Tankage is generous for the size, with 107 US gallons (405 L) of water across two tanks plus a heater, and 44 US gallons (167 L) of fuel.
The MkII brought a significant deck redesign, introducing twin helm stations and a walk-through transom that transform cockpit functionality and stern access. The larger cockpit and reshaped deck open up the MkII's layout, while the beam of 13′6″ (4.11 m) is carried well aft, contributing to both stability and interior volume.
Rig & Handling
Both generations are masthead sloops with double spreaders, but the MkII received a taller mast with slightly swept-back spreaders that yields a marginal performance boost and a subtly different sail plan. All primary control lines are led aft to the cockpit, making the boat manageable shorthanded. The twin wheels, a hallmark of the MkII, allow the helmsman to choose the windward side for unobstructed visibility of the sails and the water.
With a total sail area of 808 ft² (75.07 m²), the fin-keel MkII carries a sail area/displacement ratio of 17.8 and a ballast/displacement ratio of 36.6. Its displacement/length ratio of 181 and a comfort ratio of 25.2 place it firmly in the capable coastal cruiser category. The theoretical hull speed is 8.1 knots. The Capsize Screening Formula comes in at 2.0, which is considered acceptable for ocean work, and the boat is regarded as a highly capable coastal and moderate offshore cruiser. That said, it is not built to the structural standards of heavier, dedicated blue water yachts. Owners planning high-latitude or extreme passages may want to reinforce the standing rigging base and rudder bearings. The wing keel trims draft at the expense of a slight reduction in stability and upwind performance compared to the deeper fin.
Accommodations
Two- and three-cabin layouts were offered across the production run. The MkII generally presents a more open-plan saloon and an updated galley with additional storage. The two-cabin arrangement is popular because it delivers a very large aft master suite with a queen berth and two heads, though this comes at the cost of some cockpit locker space.
The boat's generous beam translates into massive internal volume, comfortable headroom, and spacious cabins. Ample ventilation and a well-equipped galley make extended time aboard genuinely comfortable. In the cockpit, the twin helm layout frees up a larger central dining area. The main drawback for liveaboards is the relatively limited external locker storage, a trade-off inherent in prioritising a large aft cabin.
Known Issues
The twin-wheel steering system is more complex to maintain than a single-rudder quadrant setup. While the hull is solidly built, the 400 is a production cruiser, not a heavy-displacement blue water design; for high-latitude work, additional strengthening of the standing rigging base and rudder bearings is advisable. The large aft cabin in the two-cabin layout limits external locker capacity. Any survey should pay close attention to deck fittings and the keel-hull joint for signs of water intrusion or stress.
Refits & Ownership
The MkII represented a wide-ranging mid-cycle refresh. Alongside the twin helms and walk-through transom, it introduced a redesigned deck, a taller mast, and a slightly modified sail plan. These changes enhanced cockpit ergonomics and stern access. Production of the series concluded around 2012, with an estimated 500 total boats built.
The Verdict
The Catalina 400, particularly in MkII guise, offers spacious, user-friendly cruising in a manageable length overall. Its twin-wheel cockpit, walk-through transom, and cavernous interior suit couples and families who value liveaboard comfort and warm-weather sailing. While it is not a purpose-built ocean-crossing machine, its design ratios and seakeeping manners place it comfortably within the capable coastal and moderate offshore envelope. Prospective buyers should weigh the limited deck storage and the upkeep of the twin-wheel steering against the boat's undeniable volume and ease of handling, and should confirm actual displacement and equipment for any specific hull given some variance in published specifications.
Pros
- Exceptionally spacious interior with generous beam and comfortable headroom
- Two-cabin layout provides a large aft master suite with a queen berth and two heads
- Twin helm stations improve visibility and create a larger cockpit dining area
- Walk-through transom and swim platform simplify stern access
- All sail controls led aft for easy shorthanded sailing
- SA/D of 17.8 suggests reasonably well-canvassed performance for a cruiser
- Capsize screening ratio of 2.0, considered acceptable for ocean passages
- Robust masthead rig readily flies a 135% genoa on a furler
- Solid fibreglass in high-stress areas and a balsa-cored deck (MkII)
- Estimated 500 hulls built across the production run
Cons
- Limited external locker storage, especially in the two-cabin layout
- Complex twin-wheel steering system requires more maintenance
- Not built to the structural standards of heavier blue water yachts
- May need strengthening of the standing rigging base and rudder bearings for extreme passages
- Wing keel sacrifices some stability and upwind performance
- Deck fittings and keel-hull joint demand careful survey attention
- Published displacement figures vary by source/generation — confirm for a specific hull
