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Sailboat specifications and datasheets

Astus 20.1

The Astus 20.1 is a 20’1” coastal trimaran sailboat designed by Stéphan Vallet. She was built by Astus Boats (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 2004 and 2010 with about 50 hulls completed.
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Astus 20.1's   Main Features
Model Astus 20.1
Type of hull Trimaran
Category Coastal crusing trimaran
Shipyard
Designer Stéphan Vallet
Construction Hulls and deck:
monolithic fiberglass / polyester
First built hull 2004
Last built hull 2010
Number of hulls built About 50
Appendages Centerboard :
Centerboard (main hull)
Helm 1 tiller
Rudder 1 transom hung rudder (main hull)
Cockpit Open aft cockpit
Unsinkable No
Trailerable Yes
EC certification C
Standard public price ex. VAT (indicative only) N/A
Astus 20.1's   Main dimensions
Folding type Sliding arms
Hull length 20’ 1”
Waterline length 19’ 2”
Beam (width) 12’ 8”
Overall width folded 8’ 4”
Draft 3’ 7”
Draft when appendages up 1’
Light displacement 827 lbs
Astus 20.1's   Rig and sails
Upwind sail area 242 sq.ft
Downwind sail area 431 sq.ft
Mainsail area 172 sq.ft
Genoa area 70 sq.ft
Asymetric spinnaker area 258 sq.ft
Gennaker area 215 sq.ft
Rigging type Sloop Marconi fractional
Rotating spars No
Mast position Deck stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire continuous
Number of levels of spreaders 1
Spreaders angle Swept-back (diamond)
Astus 20.1's   Performances
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
43.27
Downwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
76.92
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
53
Astus 20.1's   Auxiliary engine
Engine(s) 1
Engine type Outboard engine
Engine 6 HP
Fuel type Gas
Astus 20.1's   Accommodation
Cabin(s) 1
Berth(s) 2
Maximum headroom 4’ 7”

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