The Ranger 33 Sailboat
The Ranger 33, a masthead cruising sloop, was designed by Gary Mull and built in the USA by Ranger Yachts Inc.
'Random', a Ranger 33 sloop under full sail
'Random' is one of the later models which were produced with wheel steering. Earlier versions had a tiller.
Published Specification for the Ranger 33
Underwater Profile: Fin keel with spade rudder
Hull Material: GRP
Length Overall: 33'2" / 10.11m
Waterline Length: 26'3" / 8.00m
Beam: 9'7" / 2.9m
Draft: 5'0", 1.5m
Rig Type: Masthead sloop
Displacement: 10,500lb / 2,041kg
Designer: Gary Mull
Builder: Ranger Yachts (USA)
Year First Built: 1969
Year Last Built: 1978
Number Built: 464
Published Design Ratios for the Ranger 33
1. Sail Area/Displacement Ratio: 17.7
- 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: 42.9
- Under 40: less stiff, less powerful
- Over 40: stiffer, more powerful
3. Displacement/Length Ratio: 259
- Under 100: Ultralight
- 100 to 200: Light
- 200 to 275: Moderate
- 275 to 350: Heavy
- Over 350: Ultraheavy
4. Comfort Ratio: 28.2
- 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: 1.8
- Under 2.0 (the lower the better): Better suited for ocean passages
- Over 2.0: Less suited for ocean passages
read more about these all-revealing numbers...
Summary Analysis of the Design Ratios for the Ranger 33
1. A Sail Area/Displacement Ratio of 17.7 suggests that the Ranger 33 will approach her maximum hull speed readily and satisfy the sailing performance expectations of most cruising sailors.
2. A Ballast/Displacement Ratio of 42.9 means that the Ranger 33 will stand up well to her canvas in a blow, helping her to power through the waves.
3. A Displacement/Length Ratio of 259, tells us the Ranger 33 is a moderate displacement cruiser, which means she'll carry all your cruising gear without it having a dramatic effect on her performance. Most of today's sailboats intended for offshore cruising fall into this displacement category.
4. Ted Brewer's Comfort Ratio of 28.2 suggests that crew comfort of a Ranger 33 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 (CSF) of 1.8 tells us that a Ranger 33 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.
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