Hull Speed
The theoretical displacement-mode speed limit — determined by waterline length, not engine or sail power.
6.0 kts
A displacement hull pushes a bow wave whose speed is limited by the waterline length.
With a waterline of 20.3′, the San Juan 23 tops out around 6.0 knots in displacement mode — after that, the bow wave outruns the hull and resistance climbs steeply.
1.34 × √20.3′ LWL = 6.0 kts
Performance Ratios
Racing handicap, sail-carrying power, stability and comfort — and what each one actually tells you about a day on the water.
PHRF Rating
236s/nm
Heavy or slow cruiser — all about the journey, not the elapsed time.
Ballast / Displacement
35.6%
Typical cruising ballast — balanced stability and motion underway.
Displacement / Length
143
Ultralight — responsive and fast, but carries less stores.
Hull Speed
6.0kts
Pounds/Inch Immersion
3lbs
Weight needed to sink the hull one inch — loading sensitivity.
PHRF Fleet Position
Where the San Juan 23 sits on the PHRF handicap spectrum — lower numbers mean faster boats.
San Juan 23
Heavy or slow cruiser — all about the journey, not the elapsed time.