Cub Scow — Information, Review, Specs

Robert F. Holmgren·1967·Seago Corp.
Approximate drawing

Hover a measurement to read its value

Hull type
Scow · centerboard
Rig
Cat Rig
LOA
12.25' · 3.73 m
Displ.
150 lbs · 68 kg
First year
1967

The Cub Scow represents a significant, if niche, chapter in the evolution of American inland lake sailing. Designed as a manageable entry point into the demanding world of scow racing, this 13foot1inch dinghy was primarily produced by legendary builders such as Johnson Boat Works and Melges Performance Sailboats. It features the quintessential scow architecture: a flatbottomed hull, a blunt "snoot" bow, and a retractable centerboard. While the larger CScow and EScow became icons of highspeed regional racing, the Cub was engineered specifically to bridge the gap for younger sailors or those navigating smaller bodies of water. Its design philosophy prioritizes the unique "heeled" physics of the scow hull, where the boat creates a longer, more efficient waterline as it tips, providing a distinct sensation of speed and lift that traditional monohulls of the same size cannot replicate.

Measurements

Dimensions 01

LOA
12.25 ft
LWL
9 ft
Beam
4.5 ft
Draft
-
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Scow
Keel type
Centerboard
Ballast
-
Displacement
150 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Cat Rig
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
75 sqft

Calculations 04

SA/D ratio
42.51
Ballast/Disp.
D/L ratio
91.86
Comfort ratio
3.13
Capsize screening
3.39
Hull speed
4.02 kn

Sailing Performance & Handling

Sailing a Cub Scow is an exercise in managing heel angles. Unlike a conventional dinghy that sailors strive to keep flat, a scow is designed to be sailed on its "edge." When the boat heels to approximately 15 to 25 degrees, the flat bottom lifts out of the water, reducing wetted surface area and allowing the asymmetric waterline to slice through the water. This transition significantly reduces drag and increases the boat’s theoretical hull speed. Owners and vintage reviews often note that the Cub feels remarkably stable once it "locks in" on its side, a characteristic inherited from its larger siblings in the Inland Lake Yachting Association (ILYA) fleets.

The rig is simple, typically featuring a single mainsail on a fractional or cat-rigged setup, which allows for easy depowering in heavy gusts. Handling is responsive, though the blunt bow can be prone to "slapping" in choppy conditions, a common trait of the scow design. Because the hull is so wide relative to its length, the Cub offers high initial stability, making it a safer platform for novices than more rounded hulls like the Laser. However, once the heel exceeds its optimal point, the boat can become "skittish," requiring active mainsheet trim and hiking to maintain control.

The Cub Scow’s cultural footprint is deeply rooted in the mid-century sailing boom of the American Midwest. While it lacks the international fame of the Sunfish, it is frequently cited in historical retrospectives of the Inland Lake Yachting Association as a foundational trainer for generations of scow champions. It was often the vessel of choice for youth programs in Wisconsin and Minnesota before the advent of the Butterfly or the Optimist. Its legacy is preserved primarily through regional sailing club archives and the "old guard" of the scow racing community who view the Cub as the purist's introduction to the flat-bottomed racing style.

Known Issues & Buyer’s Checklist

When inspecting a Cub Scow, particularly older wood or early fiberglass models, several specific technical areas require scrutiny:

  • Deck-to-Hull Joint: Many Cubs were built during an era when fiberglass bonding techniques were still evolving. Check the rub rail area for separation, especially near the bow where the blunt shape takes the most impact from waves and docks.
  • Centerboard Trunk Leaks: The stresses of sailing a scow heeled over put significant lateral pressure on the centerboard trunk. Look for hairline cracks or soft spots in the fiberglass around the base of the trunk.
  • Mast Step Compression: The downward force of the rig can cause the deck to sag or the mast step to crack over time. Ensure the area around the mast partner is rigid and shows no signs of "crazing" or spider-web cracking.
  • Twin Rudder Alignment: While some Cub variants utilize a single rudder, many scow designs transitioned to twin rudders to maintain steerage when heeled. If the boat has a twin setup, ensure the linkage is tight; slop in the steering can make the boat difficult to track in a breeze.

Community & Resources

The primary authority for all scow-related activity remains the Inland Lake Yachting Association. While the Cub is no longer a primary competitive class in their modern regatta schedule, the association maintains historical records and can often connect owners with vintage parts or restoration advice. Additionally, the Melges corporate history provides context on the evolution of these hulls, as the lessons learned from the Cub directly influenced the development of modern performance dinghies.

The Verdict

The Cub Scow is a specialized vintage trainer that offers a unique sailing experience for those who appreciate the technical nuances of scow physics.

Pros:

  • Exceptional speed and "plane-ability" for a 13-foot boat.
  • High initial stability makes it an approachable trainer for beginners.
  • A significant piece of American sailing history with a dedicated niche following.

Cons:

  • Blunt bow performance is poor in heavy chop.
  • Finding class-legal replacement parts can be difficult due to its age.
  • Limited utility outside of flat-water inland lakes.

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