The Aphrodite 101 Sailboat

Published Specification for the Aphrodite 101

Underwater Profile: Fin keel with Spade Rudder

Hull Material: GRP (Fibreglass)

Length Overall: 32'7" / 9.94m

Waterline Length: 26'3" / 8.0m

Beam: 7'11" / 2.4m

Draft: 5'5" / 1.7m 

Rig Type: Fractional Sloop

Displacement: 6,174lb / 2,800kg

Designer: Paul Elvstrom & Jan Kjaerulff

Builder: Bianca Yachts (Denmark)

Year First Built: 1977

Number Built: 450

Owners Association: OTT-Yacht 

Published Design Ratios for the Aphrodite 101

1. Sail Area/Displacement Ratio: 20.8

• 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: 57.0

• Under 40: less stiff, less powerful
• Over 40: stiffer, more powerful

3. Displacement/Length Ratio: 152.4

• Under 100: Ultralight
• 100 to 200: Light
• 200 to 275: Moderate
• 275 to 350: Heavy
• Over 350: Ultraheavy

4. Comfort Ratio: 21.6

• 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: 1.7

• Under 2.0 (the lower the better): Better suited for ocean passages
• Over 2.0: Less suited for ocean passages

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Summary Analysis of the Design Ratios for the Aphrodite 101

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1. A Sail Area/Displacement Ratio of 20.8 suggests that, in the right hands, the Aphrodite 101 will have enough performance to leave most other sailboats of similar waterline length well astern. 

2. A Ballast/Displacement Ratio of 57.0 means that the Aphrodite 101 will stand up well to her canvas in a blow, helping her to power through the waves.

3. A Displacement/Length Ratio of 152, tells us the Aphrodite 101 is clearly a light displacement sailboat. If she's loaded with too much heavy cruising gear her performance will suffer dramatically.

4. Ted Brewer's Comfort Ratio of 21.6 suggests that crew comfort of a Aphrodite 101 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 1.7 tells us that a Aphrodite 101 would be a safer choice of sailboat for an ocean passage than one with a CSF of more than 2.0.