ALPA 12.70
Specifications
Hull
| LOA | 41.5 ft |
| LWL | 29.92 ft |
| Beam | 11.42 ft |
| Draft | 6.82 ft |
| Displacement | 18,637 lb |
| Ballast | 9,700.6 lb |
| Hull speed1.34·√LWL | 7.3 kn |
About the ALPA 12.70
Thanks to 'rmanganaro' for providing additional information including the following commentary: The design was commissioned by 12 individuals who wished to purchase the latest world class racer. (S&S was certainly the 'cutting edge' at the time). Alpa, selected as the builder, absorbed some of the cost of the tooling with high hopes of building and selling many more. The boats are said to be have been built to a very high standard, (with inspections by S&S, Lloyds of London at every stage of construction.) Costs also proved to be higher than expected. When the first 12 were finally delivered, the International Offshore Rule (IOR) had just been introduced, and these boats, originally designed to the RORC, could no longer be sold as the latest racing design. Alpa only sold 3 more besides the original 12 and the whole project created a huge financial strain on the company.
Performance
ORC Performance Data(2 certificates)
Measured performance data from ORC (Offshore Racing Congress) certificates.
Polar Diagram
Boat speed (kn) vs. true wind angle. Source: ORC
Racing Ratings
Triple Number
ORC Measured
Sail Areas (ORC)
Speed Table (kn)
| TWA \ TWS | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 5.1 | 6.0 | 6.7 | 7.0 | 7.2 | 7.2 | 7.3 |
| 60° | 5.4 | 6.3 | 7.0 | 7.2 | 7.4 | 7.4 | 7.5 |
| 75° | 5.6 | 6.6 | 7.1 | 7.4 | 7.6 | 7.7 | 7.8 |
| 90° | 5.6 | 6.6 | 7.2 | 7.5 | 7.7 | 7.9 | 8.2 |
| 110° | 5.4 | 6.5 | 7.3 | 7.6 | 7.9 | 8.0 | 8.3 |
| 120° | 5.3 | 6.4 | 7.2 | 7.6 | 7.9 | 8.2 | 8.6 |
| 135° | 4.8 | 5.9 | 6.8 | 7.4 | 7.7 | 8.0 | 8.7 |
| 150° | 4.1 | 5.1 | 6.1 | 6.9 | 7.4 | 7.7 | 8.3 |
| Beat VMG | 3.4 | 4.0 | 4.5 | 4.7 | 4.9 | 5.0 | 5.0 |
| Run VMG | 3.5 | 4.4 | 5.3 | 6.0 | 6.6 | 7.2 | 7.8 |
Pricing
We don't have market pricing data for the ALPA 12.70 yet. If you own one, help other buyers — what did you pay for it? Reports build a community price estimate over time.
Estimated Cost of Ownership
Based on 41.5ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the ALPA 12.70yet to publish model-specific findings we'd stand behind — but here's a free general inspection checklist, built from our research into what actually goes wrong on boats of this kind.
Drawn from 7,029 documented issues across 2,391 models, ordered so the areas that most often turn up problems come first.
Own a ALPA 12.70? Reports from owners are what turn this into a model-specific checklist — and they're the reason the boats above it have one.
Similar Sailboats
Which engine powers your ALPA 12.70?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Already know your engine? Search all engines → to find its exact parts.
Used sails that fit the ALPA 12.70
Checking eBay for sails sized to this boat's rig…