The Astus 18.2 is a versatile, high-performance trailerable trimaran launched in 2011 as a more compact and accessible "little brother" to the successful Astus 20.2. Designed by Philippe Roulin of Perspective Yacht Design—a former associate of the renowned firm VPLP—the 18.2 was conceived to bridge the gap between beach catamarans and larger coastal cruisers. With a total of 37 units produced during its run, the model represents the "second generation" of the Astus lineup, characterized by more aggressive, performance-oriented hull shapes and the builder's signature telescopic beam system. This design allows the boat to shrink its beam from nearly 13 feet on the water to a road-legal 8 feet for trailering, all without the need for dismantling the trampolines or complex rigging.
Astus 18.2 Information, Review, Specs
- Make
- Astus
- Model
- 18.2
- Builder
- Astus Boats
- Designer
- Perspective Yacht Design
- Number Built
- 37
- Production Year(s)
- 2011 - ??
Sailing Performance & Handling
The Astus 18.2 is frequently described as an "XXL-sized beach cat" due to its explosive acceleration and high-speed stability. With a light displacement of just 573 pounds (260 kg) and a sail area ranging from 182 square feet for the Leisure version to approximately 247 square feet for the Sport version, the boat possesses an impressive power-to-weight ratio. According to sea trials conducted by Multihulls World, the 18.2 can comfortably sustain 10 to 12 knots in a Force 4 breeze, displaying a "serene" sailing character that masks its high performance.
Its handling is defined by the stability of its 12.63-foot (3.85m) deployed beam. Unlike monohulls, the 18.2 remains nearly flat when pressed, making it a safe platform for family outings while still providing the "dinghy-like" responsiveness desired by more experienced sailors. The central hull features a modern chine and a tulip-shaped cross-section designed to deflect spray and keep the cockpit dry. Tracking is managed by a pivoting centerboard and a high-efficiency rudder, allowing the boat to point high into the wind while maintaining the ability to beach in just 8 inches of water.
Known Issues & Buyer’s Checklist
Prospective buyers of the Astus 18.2 should focus their inspection on the mechanical elements of its folding system and the durability of its lightweight construction.
- Telescopic Beam Maintenance: The aluminum or carbon fiber beams slide through tubes in the central hull. These should be inspected for smooth operation and signs of corrosion or "binding." If the boat has been used extensively in salt water without regular rinsing, the beams can become difficult to slide.
- Deck and Hull Core: The 18.2 uses a PVC/polyester sandwich for the deck and monolithic polyester for the hull. Check for soft spots on the deck, particularly around the high-load areas near the beam sockets and mast step.
- Rudder and Centerboard Pivot: The pivoting foils are essential for shallow-water performance but are subject to wear at the pivot pins. Inspect the rudder assembly for excessive play and ensure the centerboard deploys and retracts smoothly.
- Rigging and Mast Support: Because the boat is frequently stepped and unstepped for trailering, look for wear on the mast foot and the shroud attachment points. Owners often recommend using a dedicated mast-stepping bar to prevent accidental damage during setup.
Community & Resources
Owners of the 18.2 and other Astus models are supported by the Astus Boats Club, a dedicated association of owners that facilitates technical exchanges and "raids"—organized coastal cruising events popular in Europe. Technical resources and original builder documentation can often be sourced through the Astus Boats official website, which maintains an archive for previous models.
The Verdict
The Astus 18.2 is a premier choice for sailors who demand the speed of a multihull with the logistical ease of a small dinghy. While it lacks the interior accommodations of its larger sibling, the 20.2, it compensates with superior ease of handling and a purist’s focus on the sailing experience.
Pros:
- Exceptional Mobility: The telescopic beam system is one of the fastest and simplest in the industry for trailering.
- Safety: The high-volume floats provide a massive margin of safety against capsizing compared to beach cats.
- Shallow Draft: Capable of beaching and navigating thin waters where most monohulls cannot venture.
Cons:
- Minimalist Shelter: Lacks an enclosed cabin, limiting it strictly to day sailing or "adventure camping" on the trampolines.
- Beach Weight: At 260 kg, it is too heavy to be manually dragged up a beach without a dedicated launch trailer.
- Limited Market: With only 37 units built, finding a well-maintained example on the used market can be a challenge.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Trimaran Sailboat
- Keel Type
- Centerboard
- Ballast
- -
- Displacement
- 573 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 18.01 ft
- Waterline Length (LWL)
- 16.24 ft
- Beam
- 12.63 ft
- Draft
- 4.1 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 182.99 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 42.44
- Ballast / Displacement Ratio
- —
- Displacement / Length Ratio (D/L) Ratio
- 59.72
- Comfort Ratio
- 1.8
- Capsize Screening Formula
- 6.08
- Hull Speed
- 5.4 kn