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Image of Dehler 38 SQ

Dehler 38 SQ

Performance Cruiser Built by Dehler

Boat highlights

Dehler 38 SQ is currently estimated in the Decent band with an SBP score of 85.

Length overall

39.6 ft

Primary sail area

840 ft²

Displacement

16,535 lbs

Performance band: Decent GPH rating: 643
85
SBP score
Decent band

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Performance Analysis

Detailed performance metrics and polar diagram for Dehler 38 SQ.

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
85
ORC GPH
643
Average Speed (GPH)
5.6 kn
Yardstick
88.8
Sail Carry Number
4.5
Planing Potential
1.0 (medium)
Hull Speed
7.7 kn

Speed Estimates

Wind Speed (kn)Beat VMG (kn)Run VMG (kn)
63.23.3
84.04.2
104.55.1
124.95.8
145.16.3
165.27.0
205.37.8

Polar Diagram

Wind Speed (kn)

Key Specifications

Explore the hull dimensions and sail plan for Dehler 38 SQ.

Dimensions

Length over all 39.60 ft
Length at Waterline 32.99 ft
Hull Speed 7.7 kn
Beam 12.30 ft
Draft 6.66 ft
Displacement 16,535 lbs

Sails

Main Sail Area 460.69 ft²
Foresail Area 377.81 ft²
Upwind Sail Area 839.58 ft²
Spinnaker/Gennaker Area 538.19 ft²

Construction ratios

Sail area-to-displacement (SA/D)
20.7
Capsize screening (CSF)
1.92
Comfort ratio (CR)
25.6

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: Dehler official website. Read the SBP methodology.

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