C Scow Information, Review, Specs

C Scow Drawing
Make
C
Model
Scow
Builder
Johnson Boatworks
Designer
J.O. Johnson
Number Built
Production Year(s)
1905 - ??

The C-Scow stands as a foundational pillar of American inland lake racing, a 20-foot cat-rigged powerhouse that defies traditional naval architecture with its distinctive "scow" hull. Originally designed to navigate the shallow, gusty waters of the Midwestern United States, the model has been refined over a century, primarily under the stewardship of Melges Performance Sailboats. Unlike conventional monohulls that rely on deep keels for stability, the C-Scow utilizes a flat-bottomed, rectangular hull form and dual retractable bilge boards. This design allows the boat to plane at high speeds, effectively skipping over the water’s surface rather than pushing through it. As noted by the National C-Scow Class Association, the boat is traditionally sailed by a crew of two or three, offering a visceral, high-adrenaline experience that has preserved its status as one of the most competitive one-design classes in North America.

Sailing Performance & Handling

The C-Scow is defined by its "heeled" sailing geometry. Because the hull is flat and wide, it is designed to be sailed at a significant angle of heel—typically 15 to 25 degrees—which reduces the wetted surface area and allows the leeward bilge board to bite into the water for lateral resistance. In this configuration, the asymmetrical shape of the submerged hull section acts like a high-lift foil. The boat is famously "kinetic"; with 216 square feet of sail area packed into a single massive mainsail, the power-to-weight ratio is exceptional for a 650-pound vessel.

Handling a C-Scow requires precise coordination between the helm and the "board person." According to technical insights from Melges Performance Sailboats, the lack of a jib makes the boat highly sensitive to mainsail trim and traveler position. In heavy air, the boat becomes a physical challenge, requiring aggressive hiking to keep the mast upright and the hull from "spinning out." Conversely, in light air, its ability to generate apparent wind allows it to outpace almost any traditional keelboat of similar length. The tracking is remarkably sharp once the bilge board is engaged, but the boat remains highly reactive to weight shifts, demanding a crew that is constantly in motion to maintain the optimal "sweet spot" of heel.

Sibling Models & Variations

The C-Scow is part of a broader lineage of scow designs that share the same DNA but cater to different crew configurations. Its most direct sibling is the MC Scow, a 16-foot version designed for single-handed or light-crew sailing. While the C-Scow requires a team to manage its massive sail plan, the MC Scow utilizes a smaller rig and more manageable proportions, making it a staple for solo racers.

On the larger end of the spectrum, the E-Scow (28 feet) and the A-Scow (38 feet) represent the "big boat" evolution of the hull type. The E-Scow introduces a sloop rig (mainsail and jib) and a spinnaker, significantly increasing complexity and speed. The A-Scow is the ultimate expression of the form, often reaching speeds exceeding 25 knots. Despite these variations, the C-Scow remains the "goldilocks" of the fleet—large enough for a social crew but focused enough to remain a pure cat-rigged tactical racer.

The C-Scow’s cultural footprint is inextricably linked to the Melges family, specifically Harry "Buddy" Melges Jr., who is widely considered one of the greatest sailors in history. The boat served as a primary training ground for Buddy Melges before his Olympic gold medal wins and his successful 1992 America’s Cup defense. The model's unique appearance—often described as a "floating sidewalk" or a "surfboard on steroids"—has made it a frequent subject of sports photography in publications like Sailing World, particularly during the Inland Lake Yachting Association (ILYA) championships, which serve as the premier proving ground for the class.

Known Issues & Buyer’s Checklist

When evaluating a used C-Scow, prospective buyers must focus on the structural integrity of the hull and the condition of the high-tension rig.

  • Hull "Oil Canning": Older fiberglass hulls, particularly those from the 1970s and 80s, can develop soft spots or "oil canning" (flexing) in the bottom. This significantly hampers performance as the hull shape distorts under load.
  • Mast Step Compression: Given the massive downward force exerted by the single-masted rig, the mast step and the surrounding supporting structures should be checked for cracks or depression.
  • Bilge Board Trunks: The trunks housing the retractable boards are high-stress areas. Inspect for leaks or stress fractures where the trunk meets the hull, as these are common points of failure after years of heavy-air racing.
  • Deck-to-Hull Bond: The wide, flat deck is bonded to the hull along a lengthy perimeter. Inspect for separation, especially near the chainplates and the bow, where the rig tension is highest.
  • Stay Adjusters and Shrouds: Because the C-Scow lacks a permanent backstay, the side shrouds take immense loads. Look for "meat hooks" (frayed wires) and ensure the forestay attachment point is reinforced.

Community & Resources

The class is supported by a robust network of regional and national organizations. The National C-Scow Class Association (NCSSA) is the primary governing body, maintaining the strict one-design rules that keep the racing fair. Additionally, the Inland Lake Yachting Association (ILYA) provides a deep historical archive and organizes the most prestigious regattas for the fleet. For technical support, the "Melges Team" in Zenda, Wisconsin, remains the definitive source for parts, tuning guides, and factory repairs.

The Verdict

The C-Scow is a specialist’s machine—a boat that rewards tactical brilliance and physical agility while offering little in the way of forgiveness for the uninitiated. It is a pure racing platform that has survived the test of time by offering a level of speed and community engagement that few modern designs can replicate.

Pros:

  • Exhilarating planing performance in even moderate breezes.
  • Strong one-design fleet with high resale value for competitive boats.
  • Simple cat-rig setup allows for quick rigging and launching.
  • Deeply established racing circuit with high-level competition.

Cons:

  • Highly specialized handling that requires a steep learning curve.
  • Lacks versatility; it is a pure racer with no "cruising" or "daysailing" comforts.
  • Sensitive to crew weight; performance is heavily dependent on having the right "ballast" on the rail.

Measurements

Construction & Hull

Construction Material
Fiberglass/Wood Composite
Hull Type
Scow Sailboat
Keel Type
Centerboard
Ballast
-
Displacement
650 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
20 ft
Waterline Length (LWL)
-
Beam
7 ft
Draft
3.3 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Cat Rig
P (Main Luff)
27 ft
E (Main Foot)
16 ft
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
216 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
46.05
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
3.23
Hull Speed
— kn