Piver 36 Trimaran (AA-36)
Description
The Piver 36 Trimaran (most commonly the AA-36 or Piver AA-36) is a mid-to-large cruising trimaran in Arthur Piver's "Advanced Amateur" (AA) series from the mid-1960s. It represents an evolution in his designs: more sophisticated hull shapes (similar to his professional PI-Series, with rounded central hulls and deep-V amas/floats for better lift, reduced drag, and a comfortable ride) but simplified for amateur or semi-professional builders using plywood/fiberglass construction. This made it accessible for home-builders while offering enhanced performance, payload, and seaworthiness over smaller models like the AA-31 or Mariner 25. The AA-36 was marketed as a capable offshore cruiser, suitable for coastal passages or longer bluewater legs with a minimalist crew (ideal for 2–4 people). It shared the classic Piver emphasis on lightweight, unsinkable builds (foam flotation), demountable beams for trailering/transport (reduced to ~8–10 ft width), and surfing ability in strong winds/downwind conditions.
Construction Details
| Designer | Arthur Piver |
|---|---|
| Builder | Home Built |
| Length | 36.000 ft |
| LOA | 36.000 ft |
| Beam | 20.000 ft |
| Displacement | 6000 lb |
| Max Draft | 2.500 ft |
| Year Built | 1965 |
The standard boat dimensions
| i | 38 ft |
|---|---|
| j | 12.16 ft |
| p | 35.50 ft |
| e | 11.04 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 38 ft | 12.16 ft | 35.50 ft | 11.04 ft | - | - | - | - |
Documents
Sails
Piver 36 Trimaran (AA-36) - MAINSAIL
| Luff | * 35.5 ft - (10820 mm) |
|---|---|
| Foot | * 11.04 ft - (3365 mm) |
| Leech | * 36.68 ft - (11180 mm) |
| Tack Angle | * 88.01 ° |
| Diagonal | * 36.81 ft - (11220 mm) |
| Head (inches) | * 5.25 in - (133 mm) |
| Area | 195.74 ft² |
| Edit in Calculator |
Piver 36 Trimaran (AA-36) - JIBSAIL
| Luff | * 31.92 ft - (9729 mm) |
|---|---|
| Foot | * 16.11 ft - (4910 mm) |
| Leech | * 27.72 ft - (8449 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 13.98 ft - (4261 mm) |
| Deck Angle | * 12 ° |
| Area | 223.27 ft² |
| Edit in Calculator |
Piver 36 Trimaran (AA-36) - GENOA
| Luff | * 37.9 ft - (11552 mm) |
|---|---|
| Foot | * 19.64 ft - (5986 mm) |
| Leech | * 35.65 ft - (10866 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 18.24 ft - (5560 mm) |
| Deck Angle | * 4 ° |
| Area | 345.73 ft² |
| Edit in Calculator |
Piver 36 Trimaran (AA-36) - SPINNAKER
| Stays | * 37.9 ft - (11552 mm) |
|---|---|
| MidGirth | * 21.89 ft - (6672 mm) |
| Foot | * 21.89 ft - (6672 mm) |
| Perc LP | * 180 % |
| Area | 705.19 ft² |
| Edit in Calculator |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.
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