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B30

Cruiser-Racer Built by B-Yachts

Boat highlights

B30 is currently estimated in the Very Good band with an SBP score of 120.

Length overall

29.3 ft

Primary sail area

560 ft²

Displacement

5,071 lbs

Performance band: Very Good GPH rating: 619
120
SBP score
Very Good band

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Performance Analysis

Detailed performance metrics and polar diagram for B30.

Methodology note: SBP scores, polar diagrams, hull-speed values, and derived ratios are estimates. Use them for comparison and planning support—not as a substitute for manufacturer specifications, measured sea trials, rating certificates, professional weather routing, or safety margins. Review how we rate boats.

Performance Metrics

SBP Score
120
ORC GPH
619
Average Speed (GPH)
5.8 kn
Yardstick
92.7
Sail Carry Number
5.5
Planing Potential
1.3 (very high)
Hull Speed
6.6 kn

Speed Estimates

Wind Speed (kn)Beat VMG (kn)Run VMG (kn)
63.63.8
84.34.7
104.65.5
124.76.2
144.86.7
164.97.3
204.98.8

Polar Diagram

Wind Speed (kn)

Key Specifications

Explore the hull dimensions and sail plan for B30.

Dimensions

Length over all 29.27 ft
Length at Waterline 24.38 ft
Hull Speed 6.6 kn
Beam 7.61 ft
Draft 6.23 ft
Displacement 5,071 lbs

Sails

Main Sail Area 376.74 ft²
Foresail Area 182.99 ft²
Upwind Sail Area 559.72 ft²
Spinnaker/Gennaker Area 702.34 ft²

Construction ratios

Sail area-to-displacement (SA/D)
30.3
Capsize screening (CSF)
1.76
Comfort ratio (CR)
20.2

Discussion

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Data sources and methodology

Published specifications are kept separate from calculated ratios and estimated performance. SBP and speed outputs are model-based estimates, not owner ratings or certified handicaps.

Specifications
verified
Ratios
derived
Performance
estimated

Last checked: 27 Aug 2026. Source: B-Yachts official website. Read the SBP methodology.

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