The Catalina 42 MkII Sailboat
Specs & Key Performance Indicators
The Catalina 42 MkII, an aft-cockpit sloop, was designed by Gerry Douglas and built in the UK by Catalina Yachts.
A Catalina 42 MkII
Published Specification for the Catalina 42 MkII
Underwater Profile: Fin keel & spade rudder
Hull Material: GRP (Fibreglass)
Length Overall: 41'10" (2.8m)
Waterline Length: 36'0" (11.0m)
Beam: 13'10" (4.2m)
Draft: 6'8" (2.1m)*
Rig Type: Masthead sloop
Displacement: 20,500lb (9,299kg)
Designer: Gerry Douglas
Builder: Catalina Yachts (USA)
Year First Built: 1995
Number Built: 300
* A shallow draft wing keel version was also produced drawing 4'11" (1.5m).
Published Design Ratios for the Catalina 42 MkII
1. Sail Area/Displacement Ratio: 17.1
- Less than 16 would be considered under-powered;
- 16 to 20 would indicate reasonably good performance;
- Over 20 suggests relatively high performance.
2. Ballast/Displacement Ratio: 40.5
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 196
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 25.4
- Under 20 indicates a lightweight racing boat
- 20 to 30 indicates a coastal cruiser
- 30 to 40 indicates a moderate offshore cruising boat
- 40 to 50 indicates a heavy offshore boat
- Over 50 indicates an extremely heavy offshore boat
5. Capsize Screening Formula: 2.0
- Under 2.0 (the lower the better): Better suited for ocean passages
- Over 2.0: Less suited for ocean passages
read more about these Key Performance Indicators...
Summary Analysis of the Design Ratios for the Catalina 42 MkII
1. A Sail Area/Displacement Ratio of 17.1 suggests that the Catalina 42 MkII will, in the right conditions, approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.
2. A Ballast/Displacement Ratio of 40.5 means that the Catalina 42 MkII will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 196, tells us the Catalina 42 MkII is a light-to-moderate displacement sailboat. If she's loaded with too much heavy cruising gear her performance will suffer to a degree.
4. Ted Brewer's Comfort Ratio of 25.4 suggests that crew comfort of a Catalina 42 MkII in a seaway is similar to what you would associate with the motion of a coastal cruiser with moderate stability, which is not encouraging news for anyone prone to seasickness.
5. The Capsize Screening Formula of 2.0 tells us that a Catalina 42 MkII would not be as good a choice of sailboat for ocean passage-making, owing to the increased risk of capsize in strong winds and heavy seas when compared to a sailboat with a CSF of less than 2.0.
Other sailboats in the Catalina range include:
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