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One Design · Keelboat

SB20 parts, rigging and specifications

The SB20 is a keelboat one-design class designed by Tony Castro, with a published length overall of 20 ft 2 in (6.16 m). MAURIPRO lists 50 parts for the SB20 below, grouped by system, with live prices and stock.

  • Keelboat
  • 50 parts
  • 5 published figures

Your SB20 at MAURIPRO

What you can do on this page.

01Shop parts by system50 parts for the SB20, matched by part number and grouped by system.Shop all parts →
02Check the specifications5 published figures, each with its source.See specifications →
03Rig dimensionsI, J, P, E and other data we hold for this boat.See sailboat data →
04Get expert helpNot sure a part fits your SB20? Send us your sail number and year.Contact us →

Shop SB20 by system

SB20 parts

Prices and stock are live from our catalogue.

Parts marked "Sized for this boat" are chosen from the manufacturer sizing guides published on our Selection Guides pages (Harken winch chart, Forespar pole guide, Harken mainsheet guide, Schaefer hardware chart) using the published dimensions of the SB20. They are not specified by the class rules; check your class rules for limits before racing.

Rope sold by the foot is added at the cut length shown on the card.

SB20 specifications

SpecificationPublished figureSource
Length overall (LOA)20.2 ft (6.2 m)MAURIPRO Sailboat Data; matches Wikipedia
Beam7.1 ft (2.2 m)MAURIPRO Sailboat Data; matches Wikipedia
Displacement1510 lb (685 kg)MAURIPRO Sailboat Data; matches Wikipedia
Ballast721 lb (327 kg)MAURIPRO Sailboat Data; matches Wikipedia
DesignerTony CastroMAURIPRO Sailboat Data; matches Wikipedia

Figures are shown as each source publishes them, with the other unit converted. Class rules set the measurements that count for racing.

More for the SB20

SB20 tuning guides

  • SB20 Class Association: SB20 Tuning Guide (Jerry Hill's Tuning Guide)Version 2022 · 3 pages
  • SB20 builder (rigging manual): SB20 Rigging Instructions – Setting up the mast28 pages

Tuning guides belong to the sailmakers that publish them. MAURIPRO does not host or reproduce them; ask the sailmaker or your class association for a copy.

SB20 class rules and references

  • Class rules: 2024 Class Rules, effective Feb 1 2024 (plus CRC 2024-Feb-06)
  • Class association: sb20class.org

References checked 2026-11-04.

SB20 buying questions

What SB20 parts does MAURIPRO carry?

50 products are listed for the SB20 on this page: halyards, sheets & control lines (17); blocks & sheaves (1); spars, poles & rig fittings (2); instruments & electronics (17); safety equipment (12); spares & maintenance (1). Prices and availability shown are live from our catalogue.

How do I know a part fits my SB20?

Each part here is linked to the SB20 because its exact manufacturer part number appears on the SB20 parts lists we reviewed. Fit can still depend on your boat's year, builder and rig, so check the product details and your class rules, or ask our technical team before you order.

Where can I find the SB20 rig dimensions?

Our SB20 Sailboat Data page lists the rig dimensions (I, J, P, E) and other published data we hold for this boat. Figures there come from a sailboat database and may differ from class measurement rules.

Are there tuning guides for the SB20?

Sailmakers have published tuning guides for this class, including SB20 Class Association (SB20 Tuning Guide (Jerry Hill's Tuning Guide), 2022); SB20 builder (rigging manual) (SB20 Rigging Instructions – Setting up the mast, Undated (class-hosted copy)). These guides belong to their publishers; MAURIPRO does not host or reproduce them, so please get them from the sailmaker or your class association.

Which rules govern the SB20?

The class is governed by its class rules (2024 Class Rules, effective Feb 1 2024 (plus CRC 2024-Feb-06)). Check the current edition with the class association before buying parts for racing.

Not sure which part fits your SB20?Send us your sail number, year and builder and our team will check it.
Contact us
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All products currently in this MAURIPRO collection, with filters.

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