O'Day Sprite 10 Information, Review, Specs

O'Day Sprite 10 Drawing
Make
O'Day
Model
Sprite 10
Builder
O'Day Corp.
Designer
Robert H. Baker
Number Built
3000
Production Year(s)
1959 - ??

The O’Day Sprite 10 is a cornerstone of American dinghy sailing, designed by Robert "Bob" Baker in the late 1950s as a dedicated junior trainer. At a length overall of 10 feet 2 inches, it was specifically engineered to bridge the gap between small rowing pram-style boats and larger performance dinghies. Produced by the O'Day Corp. during the height of the fiberglass revolution, the Sprite 10 became one of the most prolific sight at yacht clubs across the United States. According to historical sales information and specifications, the boat was marketed as "pretty and practical," emphasizing its role in introducing youngsters to the "feel" of a versatile rig.

Sailing Performance & Handling

The Sprite 10 is defined by its convertible rig, a feature that allows it to grow with the sailor’s ability. It can be rigged as a catboat (using only the mainsail with the mast in the forward step) for absolute beginners, or as a sloop (moving the mast to the aft step and adding a jib) for intermediate instruction. With a total sail area of 63 square feet and a beam of 4 feet 9 inches, the boat offers a stable platform that is surprisingly lively in light air.

Technical analysis of the hull indicates a Length/Beam ratio of approximately 2.35, which suggests a slightly narrower, more performance-oriented entry than many of its blunter contemporaries. This design choice provides a better "feel" for the wind, allowing students to learn the nuances of trim and heel without the leaden response typical of heavier trainers. The boat’s weight of approximately 150 lbs makes it manageable for two adults to car-top, and its shallow 3-inch draft with the board up allows for easy beaching. However, once the centerboard is deployed to its full 3-foot 5-inch depth, the Sprite 10 tracks well and provides the necessary leverage to fly a spinnaker, a rare feature for a boat of this size.

Historically, the Sprite 10 earned a reputation as the "nation’s number one junior trainer" during the 1960s and 70s. It was frequently selected by organizations like the Severn Sailing Association for junior racing programs and became a staple of "frostbite racing" on the East Coast due to its dry ride and predictable handling in cold, gusty conditions. While it lacked the Olympic pedigree of its larger sibling, the Rhodes 19, the Sprite 10 is often cited in nautical memoirs as the "first boat" for a generation of professional sailors and naval architects.

Known Issues & Buyer’s Checklist

Prospective buyers of a vintage Sprite 10 should focus on the integrity of the flotation and the mast steps. Because these boats were often used in club environments, they frequently show signs of hard use.

  • Flotation Saturation: The original hull featured built-in fiberglass flotation tanks filled with foam. Over decades, this foam can become waterlogged if the tanks are compromised, significantly increasing the hull weight and decreasing safety.
  • Mast Step Stress: The dual-position mast step (for cat vs. sloop rigging) is a common point of failure. Look for spider cracking or "crazing" in the gelcoat around the steps, which may indicate structural fatigue in the cockpit sole.
  • Rudder Hardware: The rudder assembly, often consisting of an aluminum blade and mahogany cheeks, is prone to hardware failure. Owners frequently report losing rudders during capsizes if the retaining clips are missing or corroded.
  • Centerboard Trunk: Inspect the trunk for leaks or "scowling" where the pivoting board may have impacted the fiberglass during high-speed groundings.

Community & Resources

The legacy of the O'Day Sprite 10 is maintained by a dedicated community of restorers and former sailors. The O'Day Owners association remains the primary hub for technical documentation and rigging advice. For those seeking replacement parts or original specifications, Rudy Nickerson at D.R. Marine is widely recognized by the community as the leading authority on O'Day components. Additionally, the original Bob Baker design plans are occasionally made available through specialized maritime heritage archives for those performing structural wood-to-fiberglass conversions on early models.

The Verdict

The O'Day Sprite 10 remains an excellent choice for families seeking a durable, historical trainer that offers more versatility than a standard sunfish or pram.

Pros:

  • Versatile Rigging: Can be sailed as a catboat, sloop, or even with a spinnaker.
  • Portability: At 150 lbs, it is easily car-topped or trailered by a small vehicle.
  • Stability: A wide beam for its length makes it a forgiving platform for children and beginners.

Cons:

  • Capsize Recovery: Not a self-bailing cockpit; once swamped, it requires significant effort and bailing to right and clear.
  • Age-Related Wear: Most available units are over 40 years old, requiring careful inspection of the foam flotation.
  • Obsolete Parts: While some hardware is universal, specific items like original rudder assemblies can be difficult to source.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Centerboard
Rudder
1x —
Ballast
-
Displacement
150 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
10.16 ft
Waterline Length (LWL)
9.67 ft
Beam
4.33 ft
Draft
3.42 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
79 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
44.77
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
74.06
Comfort Ratio
3.35
Capsize Screening Formula
3.26
Hull Speed
4.17 kn