Square Meter Sharpie — Information, Review, Specs

Krogen Brothers·1931
Square Meter Sharpie drawingBuilder drawing
Hull type
Monohull · centerboard
Rig
Gunter
LOA
19.58' · 5.97 m
Displ.
510 lbs · 231 kg
First year
1931

The 12 Square Meter Sharpie is a venerable twoperson racing dinghy that occupies a unique niche in the history of international competitive sailing. Designed in 1931 by the Kröger brothers in Warnemünde, Germany, the boat was originally conceived as a lowcost, highperformance trainer that could be easily built by amateur shipwrights using traditional plankonframe or plywood methods. Its name is derived from its strictly regulated sail area of 12 square meters, though its distinctive long, narrow hull—measuring 5.98 meters (19 feet 8 inches) in length with a beam of only 1.43 meters—is what truly defines its character. The Sharpie reached the pinnacle of its sporting influence when it was selected as an Olympic class for the 1956 Melbourne Games, an event that cemented its reputation as a demanding yet rewarding tactical racer.

Measurements

Dimensions 01

LOA
19.58 ft
LWL
17.7 ft
Beam
4.7 ft
Draft
0.96 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Wood
Hull type
Monohull
Keel type
Centerboard
Rudder
1× —
Ballast
-
Displacement
510 lbs
Water
-
Fuel
-

Rig & sails 03

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

Calculations 04

SA/D ratio
34.34
Ballast/Disp.
D/L ratio
41.06
Comfort ratio
5.48
Capsize screening
2.35
Hull speed
5.64 kn

Sailing Performance & Handling

The 12 Square Meter Sharpie is a study in "old school" power-to-weight dynamics. Because it features a flat-bottomed "sharpie" hull design, the boat lacks the rounded bilges of modern dinghies, resulting in a vessel that remains relatively stable at low speeds but becomes increasingly lively as the wind picks up. The boat’s performance is heavily influenced by its heavy steel centerboard, which provides significant righting moment but also adds to a total displacement that is higher than modern composite racers.

On the water, the Sharpie is known for its exceptional tracking ability and its prowess in light-to-moderate air, where its narrow waterline allows it to slip through the water with minimal drag. However, as noted in historical reviews by Classic Boat Magazine, the boat is notoriously "wet" in a chop; the low freeboard and lack of a significant splash guard mean that the crew must be prepared for a spray-filled ride. Handling the Sharpie requires a high degree of coordination between the helm and the crew, particularly during gybes, as the long boom and significant sail area can generate substantial momentum. While it does not plane as effortlessly as a modern skiff, it can achieve surprising speeds on a reach, where the flat bottom finally generates enough lift to break free of its displacement speed.

The most significant chapter in the 12 Square Meter Sharpie’s history is undoubtedly its appearance in the 1956 Olympic Games. It was the last of the "heavy" wooden dinghy classes to be featured before the transition to more modern, lighter designs like the Flying Dutchman. The gold medal in that event was won by the legendary New Zealand duo of Peter Mander and Jack Cropp, an achievement that remains a point of national pride in Kiwi sailing history. The class also maintains a strong presence in European maritime culture, particularly in the UK, Germany, and the Netherlands, where it is often featured in editorial retrospectives focusing on the evolution of plywood boatbuilding.

Known Issues & Buyer’s Checklist

Prospective owners of a 12 Square Meter Sharpie must be prepared for the realities of maintaining a vintage wooden racing machine. Because many of these boats were built using traditional timber or early marine plywood, structural integrity is the primary concern.

  • Chine and Stem Rot: The sharp angles of the "sharpie" hull design create tight joints at the chines and the stem. These areas are prone to freshwater ingress and subsequent rot, especially if the boat has been stored under a poorly ventilated cover.
  • Centerboard Trunk Leakage: The heavy steel centerboard puts considerable strain on the wooden trunk. Buyers should inspect the joint where the trunk meets the keel for signs of weeping or structural movement.
  • Mast Step Compression: The rig on a Sharpie is surprisingly powerful. Over decades of racing, the mast step can compress the floor timbers, leading to a loss of rig tension and potential hull deformation.
  • Keel Bolt Corrosion: In older boats, the fasteners securing the keel batten and the centerboard pivot can corrode, particularly if the boat was campaigned in salt water without meticulous rinsing.

Community & Resources

The class remains vibrant thanks to a dedicated group of enthusiasts who value the boat's elegant lines and tactical depth. The British Sharpie Owners Association serves as a central hub for technical data, rigging guides, and the official class measurement rules. This organization, along with its counterparts in Europe, ensures that the "one-design" nature of the class is preserved, allowing 50-year-old wooden hulls to still compete fairly against more modern builds.

The Verdict

The 12 Square Meter Sharpie is a "gentleman’s racer" that demands athletic participation and technical finesse. While it has been surpassed in raw speed by contemporary carbon-fiber dinghies, it offers a tactile, soulful sailing experience that few modern boats can replicate.

Pros

  • Timeless Aesthetics: The long, low profile and wooden craftsmanship make it one of the most beautiful boats in any boatyard.
  • Tactical Depth: The boat rewards subtle sail trimming and clever weight distribution over raw athleticism.
  • Active Heritage: A strong international class association ensures consistent racing opportunities and a wealth of technical knowledge.

Cons

  • High Maintenance: As a wooden vessel, it requires annual varnishing and careful winter storage to prevent deterioration.
  • Unforgiving in Heavy Sea States: The low freeboard and flat bottom make it a very wet and occasionally punishing ride in high winds.
  • Weight: It is significantly heavier than modern two-person dinghies, making it difficult to launch and retrieve without a well-designed trailer or dolly.

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