No shipyards available.
Spearhead Specifications
Main Specs
| Length, m | 4.9 |
| Beam, m | 1.4 |
| Displacement, kg | 172 |
Classification
| Hull Type | Centerboard Dinghy |
| Hull Material | FG |
Rigging and Keel
| Rig | Single-masted (sloop) |
Manufacturer Information
| # Built | 24 |
| Period of manufacturing | 1980 - 1980 |
Technical Specs
| LOA, m | 4.9 |
| Sail Area (S.A.), m² | 12.08 |
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 | 39.76 |
| Capsize Screening Formula | 2.54 |
Similar Yachts from Other Shipyards
Flying Dutchman
Advance Sailboat Corp. (USA), Alpa Yachts (ITA), Binks Yacht Constructions, Costantini (Chantier Naval Costantini), Lanaverre (FRA), Lockley Newport Boats (USA), MacKay Boats Ltd., Mader Bootswerft, Mobjack Manufacturing Corp., Plastrend / Composite Technologies, Sunbeam Yachts
Show details
Fisher 25 Ms
Fairways Marine (UK), Fisher Boat Company, Neil Marine, Northshore Yachts (UK)
Show details
S&S 34
Aquafibre Ltd., Swarbrick & Swarbrick
Show details
Maple Leaf 42
Cooper Enterprises Inc. (CAN)
Show details