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The Astus 20.1 is a 20ft (6.1m) trimaran aimed at family day sailing, though its cabin offers basic cruising capability. Its multihull design offers speed and stability. Polynesian (Hawaiian navigators) sailing trimaran, ca 1781 A trimaran is a multihull boat consisting of a main hull (vaka) and two smaller outrigger hulls (amas), attached to the main hull with lateral struts (akas). ...
A multihull is a sailing ship with more than one hull. ...
Construction
The Astus 20.1 is built in glass reinforced polyester (GRP) covered with white gelcoat. The cockpit floor has a honeycomb core, offering rigidity and durability.
The floats are mounted on telescopic tubes and can be extended or folded on shore or on the water, making it possible to use narrow split ways or monohull marina berths.
Cockpit The cockpit of the Astus 20.1 is large enough to accomodate 7 adults. The cockpit floor is flat and free from centreboard well or any other gear. The cockpit coamings offer good protection for children.
Spars The Astus 20.1 mast has one pair of spreaders. The main sail attaches to a boom.
Sails The Astus 20.1 is equipped with a dacron furling jib and dacron mainsail as standard. The mainsail is fully battened and has one reef as standard, and a second reef can be specified as a factory option. A Pentex jib and mainsail can be specified for enhanced performance.
A furling gennaker and asymmetrical spinnaker are avaible as options.
Trailer The trailer offered as an option with the Astus 20.1 has a split beam and tilting rollers and is fitted with a winch to facilitate launching and recovering.
Sailing Categories The Astus 20.1 falls into the following sailing categories:
Dayboat Dayboats are boats of small to medium size aimed at short sailing trips in inland or coastal waters. They are sometimes equipped with a cabin of moderate size, making sleeping possible for weekend trips. The cabin of the Astus 20.1 includes a double berth and an optional portable chemical toilet.
Trailer Sailer Trailer Sailers are boats small and light enough to be towed by ordinary cars. Their width (beam) is constrained by road regulations. In Europe, to be towable on the road the width of the boat and trailer must not exceed 2.55m. The maximum weight is determined by the towing capacity of the towing vehicle and by the type of driving license.
Folding trimarans are particularly well suited as trailer sailers because their narrow width with folded floats makes them towable on the road whilst their wide beam with floats extended makes them stable and safe on the water. Furthermore, the absence of ballast makes them considerably lighter than a keelboat of similar size (375kg for the Astus 20.1 compared to 1000kg for a 20ft keelboat). Heavier boats require a stronger and heavier road trailer, making the towing weight even greater.
Specifications | Length overall | 6.13 m | | Beam | 3.88 m (floats extended)
2.53 m (floats folded) | | Weight | 375 kg | | Draught | 0.30 m/1.10 m (swing centreboard and rudder) | | Sail area | Main: 16.5 m²
Furling jib: 6.5 m²
Furling gennaker: 20 m²
Asymmetrical spinnaker: 24 m² | | Max outboard size | 6 hp | | EC classification | C: 5 people
D: 7 people | | Cabin | 1 double berth 1.10 m x 2.20 m | | Designer | Jean-Hubert Pommois |
See also The Astus 16. ...
A multihull is a sailing ship with more than one hull. ...
Polynesian (Hawaiian navigators) sailing trimaran, ca 1781 A trimaran is a multihull boat consisting of a main hull (vaka) and two smaller outrigger hulls (amas), attached to the main hull with lateral struts (akas). ...
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