One Design · Keelboat
Shields parts, rigging and specifications
The Shields is a keelboat one-design class designed by Sparkman and Stephens (1962). MAURIPRO lists 70 parts for the Shields below, grouped by system, with live prices and stock.
- Keelboat
- 70 parts
- 13 published figures
Your Shields at MAURIPRO
What you can do on this page.
Shop Shields by system
Shields parts
Prices and stock are live from our catalogue.
Genoa sheet footblock · Harken genoa lead car, midrange 29-34 ft (30 ft)
Sized with: Harken genoa lead car selection guide
Harken Block - 57mm Aluminum ESP Footblock
Spinnaker sheet winches · Harken size 8 (spinnaker sheet: I×J×1.8 = 502 sq ft)
Sized with: Harken winch sizing chart
Harken Plain Top Winch Radial Size 8 - Aluminum Black / One Speed
Spinnaker pole · Forespar guide: J 9.3 ft -> UXP-200-UXP (Shields)
Sized with: Forespar spinnaker pole sizing guide
Traveler end controls · Harken mainsheet traveler, midrange 29-34 ft (30 ft)
Sized with: Harken mainsheet traveler selection guide
Harken ESP End Controls - For Travelers: 1 1/16 in (27.0 mm) - Double Sheave and Cam Cleat (Pair)
Halyard winch · Harken size 15 (main halyard: P = 33.38 ft)
Sized with: Harken winch sizing chart
Harken Self Tailing Winch Radial Size 15 - Aluminum Black / One Speed
Throwable device, USCG approved
Mustang Ring Lifebuoys w/Reflective Tape - Orange 30.0 in (76.2 cm) dia
Genoa lead car (pinstop slider) · Harken genoa lead car, midrange 29-34 ft (30 ft)
Sized with: Harken genoa lead car selection guide
Harken Genoa Car - ESP Slider Pinstop - For Tracks: 1 1/16 in (27.0 mm)
Primary winches (genoa/jib sheets) · Harken size 20 (genoa sheet: I×J×0.5 = 139 sq ft)
Sized with: Harken winch sizing chart
Harken Self Tailing Winch Radial Size 20 - Aluminum Black / One Speed
Traveler car (Standard 3:1) · Harken mainsheet traveler, midrange 29-34 ft (30 ft)
Sized with: Harken mainsheet traveler selection guide
Harken Traveler Car 1 1/16 in (27.0 mm) - Shackle - Purchase: 3:1
Boom vang fiddle block with cam (4:1) · Harken boom vang, midrange 29-34 ft (30 ft)
Sized with: Harken boom vang selection guide
Harken Block - Carbo 57mm Single - Fiddle - 150 Cam-Matic / Becket
Mainsheet · 10 mm · 70 ft cut length · <= 8:1 purchase
Premium Ropes - DX Cup - 10 mm (3/8 in) Dyneema SK78 core / Polyester cover
Jib halyard (all-rope option) · 12 mm · 79 ft cut length
Premium Ropes - DX Cup - 12 mm (1/2 in) Dyneema SK78 core / Polyester cover
Main halyard (all-rope option) · 8 mm · 85 ft cut length
Premium Ropes - DX Cup - 8 mm (5/16 in) Dyneema SK78 core / Polyester cover
Spinnaker halyard · 8 mm · 78 ft cut length
Premium Ropes - DX Cup - 8 mm (5/16 in) Dyneema SK78 core / Polyester cover
Jib sheets (pair) · 8 mm · 30 ft cut length
Premium Ropes - DX Cup - 8 mm (5/16 in) Dyneema SK78 core / Polyester cover
Backstay adjustment lines (pair, 8:1 system) · 8 mm · 46 ft cut length · 8:1 (max) purchase
Premium Ropes - DX Cup - 8 mm (5/16 in) Dyneema SK78 core / Polyester cover
Spinnaker sheets (pair) · 10 mm · 65 ft cut length
Premium Ropes - S Cup - 10 mm (3/8 in) Stirotex core / Polyester cover
Boom vang tackle line · 10 mm · 30 ft cut length · 4:1 (max 8:1) purchase
Premium Ropes - S Cup - 10 mm (3/8 in) Stirotex core / Polyester cover
Backstay tackle short line (8:1 system) · 10 mm · 3.75 ft cut length · part of 8:1 purchase
Premium Ropes - S Cup - 10 mm (3/8 in) Stirotex core / Polyester cover
Spinnaker pole topping lift · 8 mm · 43 ft cut length
Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
Spinnaker pole foreguy (downhaul) · 8 mm · 20 ft cut length
Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
Spinnaker twing lines (pair) · 8 mm · 15 ft cut length
Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
Traveler adjustment lines (pair) · 8 mm · 41 ft cut length · <= 8:1 purchase
Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
Cunningham line · 8 mm · 9 ft cut length
Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
Harken part numbers cross-checked against Harken's published one-design deck layout for the Shields (checked 2026-11-04).
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 Shields. 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.
Shields specifications
| Specification | Published figure | Source |
|---|---|---|
| Length overall (LOA) | 30 feet, 2-1/2 inches | Shields Class Association, Blue Book, Section IV Hull Specifications and Equipment Requirements, 1.1 Dimensions and Weights (web edition, undated); matches Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10) |
| Waterline length (LWL) | 20 feet (6.10 m) | Shields Class Association, Blue Book, Section IV, 1.1 Dimensions and Weights; matches Wikipedia, MAURIPRO Sailboat Data |
| Beam | 6 feet, 5-1/4 inches | Shields Class Association, Blue Book, Section IV, 1.1 Dimensions and Weights |
| Beam | Beam: 6’ 5 1/4” | Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10) |
| Draft | 4 feet, 9 inches | Shields Class Association, Blue Book, Section IV, 1.1 Dimensions and Weights; matches Harken one-design deck layout page |
| Draft | 4 ft 9 in (1.45 m) | Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10); matches Wikipedia |
| Displacement | 4,600 lbs. (excluding sails, spars, rigging) (2,087 kg) | Shields Class Association, Blue Book, Section IV, 1.1 Dimensions and Weights; matches Wikipedia, Harken one-design deck layout page, MAURIPRO Sailboat Data |
| Ballast | Keel: 3,080 lbs. (1,397 kg) | Shields Class Association, Blue Book, Section IV, 1.1 Dimensions and Weights; matches Wikipedia, MAURIPRO Sailboat Data |
| Upwind sail area | Sail Area: 360 sq. ft. (33.4 m²) | Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10) |
| CrewTypical racing crew | Most race the Shields with 4 or 5 people, but she can be day sailed with two. | Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10) |
| Designer | Sparkman and Stephens | Cape Cod Shipbuilding, 'Shields One-Design' fleet page (fetched 2026-11-10) |
| Builder | Cape Cod Shipbuilding (USA) | MAURIPRO Sailboat Data; matches Wikipedia |
| First built / designed | 1962 | MAURIPRO 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 Shields
Shields tuning guides
- North Sails: Shields Tuning GuideVersion 2003 · 6 pages
- North Sails (Ched Proctor) – class copy: Shields Trim Guide by Ched Proctor, North Sails One Design ('The Ched Matrix')Version 2003 · 4 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.
Shields class rules and references
- Class rules: published by the class association
- Class association: shieldsclass.com
- Builder: capecodshipbuilding.com
References checked 2026-11-04.
Shields buying questions
What Shields parts does MAURIPRO carry?
70 products are listed for the Shields on this page: halyards, sheets & control lines (35); blocks & sheaves (9); cleats, clutches & fairleads (1); travelers, tracks & cars (4); winches & handles (4); spinnaker poles (1); and more. Prices and availability shown are live from our catalogue.
How do I know a part fits my Shields?
Each part here is linked to the Shields because its exact manufacturer part number appears on the Shields parts lists we reviewed (including Harken's published one-design deck layout for this class). 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 Shields rig dimensions?
Our Shields 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.
Can I order halyards and sheets made for the Shields?
Yes. Our Shields - Halyards & Sheets page lists 25 halyard and sheet options made up for this boat.
Are there tuning guides for the Shields?
Sailmakers have published tuning guides for this class, including North Sails (Shields Tuning Guide, Undated web guide (current page; same text as a 2003 North One Design web capture hosted by the class)); North Sails (Ched Proctor) – class copy (Shields Trim Guide by Ched Proctor, North Sails One Design ('The Ched Matrix'), Updated 9/17/2003 (compiled by George Petrides, Fleet 5)). These guides belong to their publishers; MAURIPRO does not host or reproduce them, so please get them from the sailmaker or your class association.
Everything in this collection
All products currently in this MAURIPRO collection, with filters.
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MAURIPRO - Genoa Halyard (Grand Prix Racing) - 8 mm (5/16 in), 69 ft (21.0 m) w/shackle.
MPR-HG-GP-8-69
$676.00 USDList Price: $911.63 USDUnit price /Unavailable -

MAURIPRO - Genoa Halyard (Cruising) - 10 mm (3/8 in), 69 ft (21.0 m) w/shackle.
MPR-HG-CR-10-69
$252.00 USDList Price: $339.98 USDUnit price /Unavailable -

MAURIPRO - Genoa Halyard (Club Racing) - 10 mm (3/8 in), 69 ft (21.0 m) w/shackle.
MPR-HG-CL-10-69
$654.00 USDList Price: $881.30 USDUnit price /Unavailable -

MAURIPRO Canvas Shop Mainsail Cover - MZ for booms up to 14.8 ft (4.5 m)
MPC-MZ45
$680.00 USDList Price: $890.64 USDUnit price /Unavailable -

MAURIPRO Canvas Shop Mainsail Cover - Horse Blanket for booms up to 14.8 ft (4.5 m)
MPC-HB45
$528.00 USDList Price: $691.64 USDUnit price /Unavailable -

MAURIPRO Canvas Shop Mainsail Cover - High Neck for booms up to 14.8 ft (4.5 m)
MPC-HN45
$554.00 USDList Price: $725.23 USDUnit price /Unavailable -

Lewmar Winch Handle - 8 in. / Aluminum / Single Hand Grip / Locking
LEW29141011
$116.00 USDList Price: $170.95 USDUnit price /Unavailable -
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Mustang Ring Lifebuoys w/Reflective Tape - Orange 30.0 in (76.2 cm) dia
MUS-MRD030-2-0-311
$160.00 USDUnit price /Unavailable -

Premium Ropes - DX Cup - 12 mm (1/2 in) Dyneema SK78 core / Polyester cover
PRR-430-12
$5.53 USDUnit price /Unavailable -

Premium Ropes - DX Cup - 10 mm (3/8 in) Dyneema SK78 core / Polyester cover
PRR-430-10
$3.92 USDUnit price /Unavailable -

Premium Ropes - DX Cup - 8 mm (5/16 in) Dyneema SK78 core / Polyester cover
PRR-430-08
$3.06 USDUnit price /Unavailable -

Premium Ropes - S Cup - 10 mm (3/8 in) Stirotex core / Polyester cover
PRR-330-10
$2.42 USDUnit price /Unavailable -

Premium Ropes - S Cup - 8 mm (5/16 in) Stirotex core / Polyester cover
PRR-330-08
$1.70 USDUnit price /Unavailable -
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