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3data points analyzed by Sailpages.com to compile this SIGMA 33 C buyer’s report
SIGMA 33 C

SIGMA 33 C

Marine Projects Ltd.🇬🇧· Design: David Thomas
$25,504 avg$25,504 – $25,504 (2 listings)from 1979
$1.8K – $4.7K est. annual maintenance
Offshore CruisermonoMasthead SloopFin

Specifications

Hull

LOA32.5 ft
LWL26.25 ft
Beam10.5 ft
Draft4.83 ft
Displacement9,500 lb
Hull speed1.34·√LWL6.9 kn

Rig & Sails

Iforetriangle height37 ft
Jforetriangle base11.71 ft
Pmainsail luff31.5 ft
Emainsail foot12.5 ft
FLforestay11.7 ft
Mainsail429.3 sq ft
Jib (100%)216.6 sq ft
Spinnaker368.3 sq ft

About the SIGMA 33 C

A more cruising oriented version of the SIGMA 33 OOD with shorter, masthead rig.

Direct variant of the SIGMA 33 C

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

Comfort22.8
Capsize1.99
SA/Disp17.8
Disp/Len234

Estimated Value

Limited Data
Based on 2 listings
Low
$18,602
Estimated Value
$19,007
High
$19,412
Inflation-adjusted to 2026 USD

Estimated Cost of Ownership

Based on 32.5ft LOA. Actual costs vary by condition, usage, and local rates.

$/ft/mo
Annual Maintenance
$1.8K – $4.7K
Hull, rigging, sails, engine service
Annual Docking
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Annual Insurance
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Known Issues & Pre-Purchase Inspection

We don't have enough data on the SIGMA 33 Cyet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.

Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.

1Structural & Bulkheads9732Standing Rigging6403Deck & Topsides6404Keel & Keel Bolts5535Rudder & Steering5086Hull & Bottom377
Free general pre-purchase checklist
25 survey areas — hull, keel, rig, engine, electrical and more. Take it aboard when you view any boat.

Own a SIGMA 33 C? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.

Similar Sailboats

Which engine powers your SIGMA 33 C?

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.

Already know your engine? Search all engines → to find its exact parts.

Used sails that fit the SIGMA 33 C

Checking eBay for sails sized to this boat's rig…