Hobie 21 SE Information, Review, Specs

Make
Hobie
Model
21 SE
Builder
Hobie Cat
Designer
John Wake
Number Built
900
Production Year(s)
1987 - 1990

The Hobie 21 SE (Special Edition) represents the high-water mark of Hobie Cat’s traditional fiberglass performance line. Introduced in the late 1980s, specifically around 1987, the 21 SE was designed to be a "super-cat"—a massive, powerful beach catamaran that moved beyond the simple, recreational roots of the Hobie 16 and 14. Measuring 21 feet in length with a sprawling 10-foot beam, the boat was engineered for maximum righting moment and high-speed offshore capability. Unlike its smaller predecessors, the 21 SE features symmetrical hulls and deep daggerboards, allowing for superior upwind performance and eliminating the need for the asymmetric "banana" hulls found on the Hobie 16. The boat's most striking visual features are its "wings"—contoured mesh benches that extend out from the hulls, providing comfortable seating for the crew and additional leverage for the trapeze artists.

While the SE was the high-performance variant, the company also produced the Hobie 21 Sport, which utilized the same 21-foot hull platform. The Sport model was marketed toward families and cruiser-sailors, featuring a smaller rig, a furling jib, and a more simplified control layout. Despite its size and complexity, the 21 SE remains a favorite among long-distance catamaran racers due to its ability to carry a large payload and maintain high average speeds in heavy seas. Because of its 10-foot width, the boat famously requires a specialized tilting trailer or complete disassembly for road transport, as it exceeds the standard 8.5-foot legal trailering limit in many jurisdictions. Technical details and assembly instructions are preserved in the Hobie 21 SE Support Documentation provided by the manufacturer.

Sailing Performance & Handling

The sailing characteristics of the Hobie 21 SE are defined by its immense scale and power-to-weight ratio. With a mast standing 33 feet tall and a total sail area (main and jib) approaching 300 square feet, the boat generates significant lift. Unlike smaller Hobies that rely on weight shifting to prevent "pitch-poling," the 21 SE’s long, high-buoyancy hulls provide a much larger safety margin in following seas. The addition of high-aspect daggerboards allows the 21 SE to point significantly higher than the boardless Hobie 16, transforming it from a "reach-and-return" beach boat into a legitimate tactical racer.

In terms of handling, the boat is a multi-person machine. While it can be sailed by two, it truly excels with a crew of three or four, especially in "trapeze conditions." The wings provide a stable platform for the crew to move across the boat during tacks, though the sheer width of the 10-foot beam means that maneuvers must be choreographed carefully to maintain momentum. The rudder system is heavy compared to smaller models, providing a firm, authoritative feel that is necessary when managing the high loads generated by the massive rig.

The Hobie 21 SE holds a legendary status in the world of distance beach cat racing. It was the primary vessel for the "Hobie 21 Pro Circuit" in the late 1980s, a professional racing series that aimed to bring high-speed multihull racing to a mainstream audience. The boat was also a frequent contender in the Worrell 1000 and the Great 1000 Mile Ocean Race, where its durability and ability to punch through heavy surf were tested against the best beach cats in the world. Its presence in these high-stakes endurance events cemented its reputation as a rugged, offshore-capable catamaran rather than a mere "lake toy."

Known Issues & Buyer’s Checklist

Purchasing a used Hobie 21 SE requires a meticulous inspection of specialized components that are unique to this model.

  1. Wing Attachment Points: The "wings" are a major stress point. Buyers should inspect the hull-to-wing sockets for spider cracking or structural softening. If the wings feel "mushy" when sat upon, it may indicate internal failure of the mounting hardware or the fiberglass laminate.
  2. Daggerboard Trunks: Because the 21 SE is often beach-launched, the daggerboard trunks are susceptible to impact damage. Check the fore and aft ends of the trunks for cracks or leaks, which can lead to water ingress into the hulls.
  3. Comptip Integrity: Like many Hobies of this era, the 21 SE features a "Comptip" mast—a fiberglass upper section designed for safety near power lines. Over time, the sealant between the aluminum lower mast and the fiberglass tip can fail, leading to leaks that make the mast heavy and prone to turtle the boat if it capsizes.
  4. Crossbar Integrity: Given the 10-foot beam, the aluminum crossbars (beams) are under immense torque. Inspect the "dolphinstriker" (the cable and post under the front crossbar) for tension and signs of corrosion. A loose or corroded dolphinstriker can lead to a catastrophic failure of the front beam.
  5. Hull Delamination: As with any vintage fiberglass catamaran, check for "soft spots" on the decks, particularly in the areas where the crew stands or jumps during tacks. Delamination on a boat this large can be an expensive and complex repair.

Community & Resources

Owners of the 21 SE are supported by a dedicated global network. The International Hobie Class Association remains the primary governing body for racing rules and class-sanctioned events. For technical assistance and sourcing discontinued parts, the Hobie Class Association of North America provides extensive archives of "Hobie Hotline" magazines which contain decades of tuning guides and repair tips specifically for the 21-foot platform.

The Verdict

The Hobie 21 SE is a "gentle giant" that offers a level of stability and performance rarely found in the beach cat category. It is a specialized tool for those who want to sail fast with a group of friends or tackle long-distance coastal passages.

Pros:

  • Tremendous Stability: The 10-foot beam and long hulls make it one of the most stable beach cats ever built.
  • High Capacity: Comfortably carries 4+ adults, making it an excellent platform for day-touring.
  • Upwind Performance: Daggerboards provide racing-grade pointing ability.

Cons:

  • Logistical Complexity: The wide beam makes trailering a significant chore, often requiring a specialized tilting trailer.
  • Weight: At approximately 600 lbs, it is difficult to move on the beach without a high-quality set of "beach wheels" and multiple people.
  • Part Availability: Some specialized 21-specific hardware is becoming increasingly difficult to source on the secondary market.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Catamaran Sailboat
Keel Type
Centerboard
Ballast
-
Displacement
565 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
21.25 ft
Waterline Length (LWL)
-
Beam
9.54 ft
Draft
2.16 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

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

Calculations

Sail Area / Displacement (SA/D) Ratio
70.23
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
4.62
Hull Speed
— kn