Whirlwind 11 Information, Review, Specs

Make
Whirlwind
Model
11
Builder
Sears, Roebuck & Co.
Designer
Sears Design Team
Number Built
Production Year(s)
1973 - ??

The Whirlwind 11 occupies a nostalgic niche in American maritime history, representing the peak of the Sears, Roebuck & Co. effort to democratize sailing. As a compact, fiberglass sailing dinghy, the Whirlwind 11 was designed for simplicity, portability, and ease of use, often arriving at the owner's home via freight delivery. It was marketed primarily to families and novice sailors who required a boat that could be easily managed on a lake or transported on a light trailer. Unlike the high-performance racing dinghies of its era, the Whirlwind 11 prioritized stability and durability, utilizing a robust fiberglass layup that allowed it to survive the rigors of beaching and beginner handling.

Sailing Performance & Handling

The Whirlwind 11 is characterized by its forgiving, if somewhat sedate, sailing characteristics. Most iterations featured a simple lateen or sloop rig, designed to be stepped and tuned without the need for complex standing rigging. Given its 11-foot length and relatively wide beam for its size, the boat offers a high degree of initial stability, which is essential for a vessel often operated by children or first-time sailors.

In light air, the Whirlwind 11 is responsive but lacks the "snap" of more performance-oriented contemporaries like the Laser. Its hull form is a compromise between a flat-bottomed planing hull and a traditional displacement shape, meaning it tracks reasonably well in a straight line but can feel sluggish when attempting to point close to the wind. Historical catalog descriptions and anecdotal evidence from owners suggest that the boat performs best on a reach or a run, where its buoyant hull can take advantage of following seas. The rudder and daggerboard (or centerboard, depending on the specific production year) are typically made of wood or heavy plastic, providing sufficient lift to prevent excessive leeway, though the boat is known to be "tender" when pushed in gusts over 15 knots.

Sibling Models & Variations

The Whirlwind 11 was part of a tiered hierarchy of sailboats offered by Sears to capture different segments of the recreational market. Its most direct sibling was the Whirlwind 12, which added a foot of length and often featured a slightly more sophisticated sail plan. For those seeking more speed, the Sears Jetwind 14 was the "performance" alternative, featuring a larger sail area and a hull designed for easier planing.

During the 1960s and 70s, Sears also marketed the "Super Snark" and various "Sea Snark" models made of expanded polystyrene. The Whirlwind 11 was positioned as a significant step up from these foam boats, offering a "real" fiberglass hull that could be repaired and maintained over decades. While the Whirlwind 11 remained the entry-level fiberglass option, some variants were sold with different deck layouts, including some with a small "splash deck" forward to keep the cockpit drier in choppy lake conditions.

Known Issues & Buyer’s Checklist

For modern buyers looking to restore or sail a vintage Whirlwind 11, there are several technical areas that require close inspection.

  1. Mast Step Integrity: The mast step in these fiberglass dinghies is a frequent failure point. Over decades of use, the downward pressure of the mast can cause spider-web cracking in the fiberglass or, in worst-case scenarios, a complete collapse of the supporting structure.
  2. Transom Delamination: Because these boats were often stored outdoors or left in the water, moisture can penetrate the transom core (often plywood encased in fiberglass). A "soft" transom or visible bulging around the gudgeons indicates structural rot.
  3. Daggerboard Trunk Leaks: The junction where the daggerboard trunk meets the hull is a common source of leaks. Inspect this area for stress cracks or previous poor-quality repairs using non-marine grade resins.
  4. Hardware Obsolescence: The blocks, cleats, and pintles used on the Whirlwind 11 were often proprietary or generic hardware store items that are no longer in production. While they can be replaced with modern Harken or Ronstan fittings, the original screw holes may not align, requiring fiberglass filling and re-drilling.

The Verdict

The Whirlwind 11 is a charming relic of the mid-century boating boom, offering a low-stakes entry into the world of sailing. While it will never win a regatta, its simplicity makes it an excellent teaching platform or a relaxed "pond sailer."

Pros

  • Extremely easy to rig and launch single-handedly.
  • Heavy-duty fiberglass construction is more durable than modern inflatable or foam alternatives.
  • Historical "cool factor" as a piece of Sears, Roebuck & Co. Americana.
  • Compact size allows for easy storage in a standard garage.

Cons

  • Limited performance capabilities, particularly when sailing upwind.
  • Proprietary hardware can be difficult to source or replace.
  • Susceptible to hull-to-deck joint leaks if the rub rail has been damaged.
  • Lacks the buoyancy tanks found in modern safety-certified dinghies; once turtled, it can be difficult to bail.

Measurements

Construction & Hull

Construction Material
Plastic/Polyethylene
Hull Type
Monohull Sailboat
Keel Type
Daggerboard
Rudder
1x —
Ballast
-
Displacement
76 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
11 ft
Waterline Length (LWL)
-
Beam
3.75 ft
Draft
1 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
40.13
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
3.54
Hull Speed
— kn