J 88
Cruiser-Racer Built by J Boats
Boat highlights
J 88 is currently in the Very Good band with an SBP score of 117.
Length overall
29.2 ft
Primary sail area
517 ft²
Displacement
4,991 lbs
Performance band: Very Good GPH rating: 628
117
SBP score
Very Good band
Quick actions
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Performance Analysis
Detailed performance metrics and polar diagram for J 88.
Performance Metrics
SBP Score
ⓘ
117
ORC GPH
ⓘ
628
Average Speed (GPH)
ⓘ
5.7 kn
Yardstick
ⓘ
93.7
Sail Carry Number
ⓘ
5.2
Planing Potential
ⓘ
1.3 (very high)
Hull Speed
ⓘ
6.6 kn
Speed Estimates
| Wind Speed (kn) | Beat VMG (kn) | Run VMG (kn) |
|---|---|---|
| 6 | 3.4 | 3.8 |
| 8 | 4.1 | 4.7 |
| 10 | 4.6 | 5.6 |
| 12 | 4.8 | 6.1 |
| 14 | 4.9 | 6.6 |
| 16 | 5.0 | 7.1 |
| 20 | 5.1 | 8.8 |
Polar Diagram
Wind Speed (kn)
Key Specifications
Explore the hull dimensions and sail plan for J 88.
Dimensions
Length over all 29.20 ft
Length at Waterline 24.32 ft
Hull Speed 6.6 kn
Beam 9.51 ft
Draft 6.50 ft
Displacement 4,991 lbs
Sails
Main Sail Area 296.01 ft²
Foresail Area 215.28 ft²
Upwind Sail Area 516.67 ft²
Spinnaker/Gennaker Area 1022.57 ft²
Construction ratios
Sail area-to-displacement (SA/D)
28.3Capsize screening (CSF)
2.21Comfort ratio (CR)
14.8Discussion
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