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SB20

SB20

Dart Sailboats🇦🇺· Design: Tony Castro
from 2004
$500 – $1.3K est. annual maintenance
Performance RacermonoFractional SloopVariable
SB20 Class Association International

Specifications

Hull

LOA20.18 ft
LWL18.04 ft
Beam7.05 ft
Draft4.92 ft
Displacement1,510 lb
Ballast721 lb
Hull speed1.34·√LWL5.7 kn

About the SB20

Originally called the LASER SB3, it was built in Malaysia and sold by Laser Performance under licence from the designer until 2012. Class rules specify a crew weight limit and prohibit hiking. It is thought that more than 700 boats have been built.

Direct variant of the SB20

Near-identical models — same hull, builder and designer, re-badged or lightly changed. Specs and owner-reported issues are typically shared across the group, so a sister model's page may carry detail this one doesn't.

Performance

Comfort9.3
Capsize2.46
SA/Disp35.8
Disp/Len115
Bal/Disp47.8

ORC Performance Data(4 certificates)

Measured performance data from ORC (Offshore Racing Congress) certificates.

Polar Diagram

24681012140°30°60°90°120°150°180°WIND
4kn6kn8kn10kn12kn14kn16kn20kn24knbeat VMGrun VMG

Boat speed (kn) vs. true wind angle. Source: ORC

Racing Ratings

GPH702.9 s/miOSN683.6

Triple Number

LowMedHighOffshore0.77170.96581.1230Inshore0.60950.78750.9209

ORC Measured

Displacement706 kg (1557 lb)Wetted surface9.6 m² (103 ft²)Stability index50.8

Sail Areas (ORC)

Main17.5 m² (189 ft²)Genoa8.9 m² (96 ft²)Asymmetric43.3 m² (466 ft²)

Speed Table (kn)

TWA \ TWS468101214162024
52°3.54.75.45.86.06.26.26.36.4
60°3.84.95.55.96.26.46.56.76.7
75°3.95.05.66.06.46.87.07.37.4
90°4.15.35.96.36.66.97.48.08.4
110°4.15.46.16.87.37.78.19.010.2
120°4.05.36.06.77.48.28.810.311.8
135°3.64.85.76.37.07.88.912.213.8
150°2.94.15.15.86.36.87.611.014.2
Beat VMG2.33.13.84.24.44.54.54.54.5
Run VMG2.53.54.45.05.55.96.69.512.3

Images

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alt="sb20 asia pacific championship boat racing"
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Pricing

We don't have market pricing data for the SB20 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.

Estimated Cost of Ownership

Based on 20.18ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$500 – $1.3K
Hull, rigging, sails, engine service
Annual Docking
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Annual Insurance
N/A
No price data available

Known Issues & Pre-Purchase Inspection

6 documented issues across 5 systems, documented on the near-identical sister model LASER SB3. The SB20 shares its hull, rig and keel, so these findings apply.

1 critical3 major2 minor
Rigging2Keel1Rudder1Hull1Structural1

Unlock the full inspection report

Thinking of buying a SB20? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.

  • All 6 specific issues — severity, symptoms & fixes (from sister model LASER SB3, rig/keel differences flagged)
  • Model-specific pre-purchase inspection checklist
  • Downloadable PDF to take to your surveyor — yours to keep

One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep

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Which engine powers your SB20?

We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.

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Used sails that fit the SB20

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