The Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 vs Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 measures 34,6 feet overall (1985), giving it roughly 3,5 additional feet of deck space compared to the Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 at 31,1 feet (2012). Weight tells a clearer story for trailering families: the Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 tips the scales at 11 934 lbs — 1 733 lbs less than the Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 at 10 201 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 carries a rated maximum of 21 hp. Engine data for the Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.
For family outings this is probably the sharpest distinction between the two. The Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 is rated for 10 passengers, while the Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 could be the deciding factor.
Both boats sit in a similar displacement bracket — 10 201 lbs for the Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 and 11 934 lbs for the Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985. Comparable displacement means broadly similar seakeeping behaviour and load capacity, though hull form and ballast ratio will still produce noticeably different sailing characteristics.
Both boats draw a similar depth — 6,4 ft and 5,7 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.
The Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 uses Sloop rigging. The Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 has a documented auxiliary engine of 21 hp.
Hull speed is rated at 7,3 knots for the Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 and 6,9 knots for the Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012.
Bottom line: The Catalina Yachts Catalina 34 MkI - Fin Keel Fin Keel 1985 at 34,6 ft offers more living space, greater range, and a more substantial offshore capability. The Catalina Yachts Catalina 315 - Fin Keel Fin Keel 2012 at 31,1 ft is the easier, lower-cost option — simpler to crew and a strong choice for coastal and day sailing.