Fastback 30 Specifications
Main Specs
| Length, m | 9.30 |
| Beam, m | 4.88 |
| Displacement, kg | 2449.00 |
Classification
| Hull Type | Catamaran Single Dbrd. |
| Hull Material | FG |
Rigging and Keel
| Rig | Masthead Sloop |
| Min Draft, m | 0.38 |
Cabins & Passenger Capacity
| Headroom | 1.88 |
Engine
| Engine Type | Diesel |
| Engine Power | 18 |
Tanks Capacity
| Fuel capacity, l | 76.00 |
| Water tank, l | 189.00 |
Manufacturer Information
| Shipyard | Fastback Catamarans |
| Country | Australia |
| Designer | John Gross |
| Association | facebook.com/fastbackcatamaranowners/ |
Technical Specs
| LOA, m | 9.30 |
| Sail Area (S.A.), m² | 52.03 |
| Bridgedeck Clearance, m | 0.61 |
Sailboat Calculations
S.A. / Displacement Formula
SA/D = SA (ft²) ÷ [Disp (lbs) / 64]^0.666
A sail area/displacement ratio below 16 would be considered under powered; 16 to 20 would indicate reasonably good performance; above 20 suggests relatively high performance.
SA/D = SA (ft²) ÷ [Disp (lbs) / 64]^0.666
A sail area/displacement ratio below 16 would be considered under powered; 16 to 20 would indicate reasonably good performance; above 20 suggests relatively high performance.
Capsize Screening Formula
CSF = Beam ÷ (Disp in cubic ft)^(1/3)
Designed to determine if a boat has blue water capability. The CSF compares beam with displacement since excess beam contributes to capsize and heavy displacement reduces capsize vulnerability. The boat is better suited for ocean passages (vs coastal cruising) if the result of the calculation is 2.0 or less. The lower the better.
CSF = Beam ÷ (Disp in cubic ft)^(1/3)
Designed to determine if a boat has blue water capability. The CSF compares beam with displacement since excess beam contributes to capsize and heavy displacement reduces capsize vulnerability. The boat is better suited for ocean passages (vs coastal cruising) if the result of the calculation is 2.0 or less. The lower the better.
| S.A. / Displacement | 29.20 |
| Capsize Screening Formula | 3.66 |
Rig and Sail Particulars
| Mast Height from DWL, m | 10.67 |
