UK Comet OD Information, Review, Specs

Make
UK
Model
Comet OD
Builder
Comet Dinghies
Designer
Andrew Simmons
Number Built
Production Year(s)
1980 - ??

The Comet OD is a quintessential British single-handed racing dinghy, designed in 1981 by Andrew Simmons (of Comet Dinghies) to provide a more comfortable and manageable alternative to the ubiquitous Laser. At 3.45 meters (11' 4") in length and with a hull weight of approximately 50kg, it was engineered for easy car-topping and single-handed launching. Unlike many contemporary single-handers that utilize a "sit-on" deck layout, the Comet features a deep, secure cockpit that allows the sailor to "sit in," a design choice that has made it a favorite among veteran sailors and those transitioning from smaller trainers. The hull is constructed from robust GRP, maintaining a strict one-design philosophy that has seen over 900 boats produced to date.

Sailing Performance & Handling

The Comet is widely regarded for its exceptional performance in light-to-moderate winds, where its rounded hull shape and light displacement allow it to ghost along while heavier boats struggle. Its handling is characterized as "responsive yet forgiving," a balance achieved through a relatively high boom and a hull that provides a stable platform even when pushed. The boat utilizes a two-piece mast and a choice of sail plans to suit different pilot weights and skill levels.

The "Standard" rig carries a 6.25m² unbattened Dacron sail, which is the class standard for club racing. For lighter sailors or children, the "Mino" rig provides a shorter bottom mast and a 5m² sail, significantly reducing the capsizing moment. More modern performance-oriented options include the "Xtra" and the "White Xtra" rigs; the latter utilizes a 6.25m² radial-cut Dacron sail with battens, which Yachts and Yachting notes provides equivalent performance to the standard rig while offering better shape control. Rigging is purposefully simple, and while a rear mainsheet is traditional, many owners opt for a center-mainsheet conversion to suit modern racing styles.

While the Comet lacks the "white-knuckle" speeds of high-performance skiffs, its ability to plane in as little as 12 knots of wind and its high level of maneuverability make it ideal for the restricted waters of British inland lakes and rivers. Its short length and daggerboard design—which does not foul the boom when raised—make it particularly well-suited for shallow-water sailing.

Sibling Models & Variations

The Comet OD is the progenitor of a diverse family of hulls built by Peak Dinghy and Comet Dinghies. While they share a design DNA of "comfort meets performance," they are distinct hulls rather than simple rig variants. The Comet Zero is an 11-foot junior version, while the Comet Duo (12ft) and Comet Versa (12ft) are dedicated double-handers with more beam to accommodate a crew or family. The largest in the family is the Comet Trio, a 14-foot Phil Morrison design that features a more complex rig, including an optional asymmetric spinnaker, catering to more competitive racing and coastal cruising.

The Comet enjoys a vibrant culture within the UK club racing scene. It is a staple at "Open Meetings" across the country, particularly within the "Aphelion" regional series organized by the class. The boat’s longevity and the builder’s dedication mean that 30-year-old hulls remain competitive at the national level, a rarity in the world of GRP dinghies. Its reputation as the "best-kept secret" of the dinghy world is frequently discussed in editorial retrospectives highlighting its role in keeping older sailors active on the water.

Known Issues & Buyer’s Checklist

When inspecting a used Comet OD, potential buyers should focus on several specific technical areas common to GRP dinghies of this era:

  • Mast Step Stress: Check the area around the mast step for spider cracking or deflection in the fiberglass, which can indicate excessive rig tension or a history of hard use.
  • Hull-to-Deck Bond: Inspect the seam under the gunwale for signs of separation or previous repairs, especially near the transom and bow where stress is highest during recovery.
  • Daggerboard Case: Look for wear or "rounding" at the entrance of the daggerboard case. Over time, the movement of the board can wear through the gelcoat, potentially leading to water ingress into the laminate.
  • Sails and Spars: Ensure the two-piece mast sections fit together snugly without excessive wobble. If the boat comes with a sleeved sail, check for tears in the sleeve where it slides over the mast, as these are high-friction points.

Community & Resources

The Comet Class Association is the primary resource for technical data, tuning guides, and racing calendars. It is an exceptionally active organization that publishes the "Perihelion" magazine and manages a comprehensive list of fleet locations across the UK. For owners of the double-handed variants, the Combined Comet Class Association provides similar technical support and event coordination.

The Verdict

Pros:

  • Extremely lightweight and easy to handle solo on land.
  • "Sit-in" cockpit design offers significantly better comfort than most single-handers.
  • Highly versatile rig options (Mino to White Xtra) allow the boat to grow with the sailor.
  • Excellent light-wind performance makes it ideal for inland lake racing.

Cons:

  • The 3.45m hull can feel "twitchy" in heavy, gusty conditions compared to larger dinghies.
  • Cockpit space may feel slightly cramped for exceptionally tall sailors (over 6'2").
  • Limited presence in international markets; predominantly a UK-based class.

Measurements

Construction & Hull

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

Dimensions

Length Overall (LOA)
11.33 ft
Waterline Length (LWL)
-
Beam
4.5 ft
Draft
2.5 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
48.78
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
3.76
Hull Speed
— kn