J 80
Cruiser-Racer Built by J Boats
Boat highlights
J 80 is currently in the Good band with an SBP score of 110.
Length overall
26.3 ft
Primary sail area
334 ft²
Displacement
2,910 lbs
Performance band: Good GPH rating: 682
110
SBP score
Good band
Quick actions
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Performance Analysis
Detailed performance metrics and polar diagram for J 80.
Performance Metrics
SBP Score
ⓘ
110
ORC GPH
ⓘ
682
Average Speed (GPH)
ⓘ
5.3 kn
Yardstick
ⓘ
101.6
Sail Carry Number
ⓘ
5.1
Planing Potential
ⓘ
1.4 (very high)
Hull Speed
ⓘ
6.3 kn
Speed Estimates
| Wind Speed (kn) | Beat VMG (kn) | Run VMG (kn) |
|---|---|---|
| 6 | 3.1 | 3.6 |
| 8 | 3.8 | 4.5 |
| 10 | 4.3 | 5.3 |
| 12 | 4.5 | 5.8 |
| 14 | 4.6 | 6.3 |
| 16 | 4.7 | 6.8 |
| 20 | 4.7 | 8.7 |
Polar Diagram
Wind Speed (kn)
Key Specifications
Explore the hull dimensions and sail plan for J 80.
Dimensions
Length over all 26.25 ft
Length at Waterline 21.86 ft
Hull Speed 6.3 kn
Beam 8.17 ft
Draft 4.92 ft
Displacement 2,910 lbs
Sails
Main Sail Area 187.51 ft²
Foresail Area 149.62 ft²
Upwind Sail Area 333.68 ft²
Spinnaker/Gennaker Area 699.65 ft²
Construction ratios
Sail area-to-displacement (SA/D)
26.2Capsize screening (CSF)
2.27Comfort ratio (CR)
11.7Discussion
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111
SBP Score
Good
