Hartley 35 Lively Trimaran
Description
The Hartley 35 Lively (officially the Lively 35 Cruising Trimaran) is a classic cruising trimaran designed by Richard Hartley (founder of Hartley Boats in New Zealand). It's part of the long-running "Lively" series of multihull plans from the 1960s–1970s era, with the 35 being the original/full-size "Lively" model (later scaled down to versions like the Lively 28 for easier building/trailering). Plans are still available directly from Hartley Boats for amateur or professional construction in plywood (often glass-sheathed for durability) or as molds for GRP/FRP fiberglass—making it popular among DIY builders seeking affordable, seaworthy multihulls. This design prioritizes comfortable cruising over racing: wide overall beam for stability, shallow draft for access to anchorages, good payload for gear/provisions, and enough sail area for decent performance in moderate winds. It's known for solid bluewater capability (some owners have logged long passages, like East Africa to Med), liveaboard potential, and easy handling as a family/couple cruiser. The main hull provides living space, while the amas (floats) fold or detach for trailering/storage in some builds, though most are assembled permanently at launch.
Construction Details
| Designer | Richard Hartley |
|---|---|
| Builder | Hartley Boats (NZ) |
| Length | 34.500 ft |
| LOA | 34.500 ft |
| Beam | 23.500 ft |
| Max Draft | 25.000 ft |
| Year Built | 1970 |
The standard boat dimensions
| i | - |
|---|---|
| j | - |
| p | 34 ft |
| e | 15.50 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| - | - | 34 ft | 15.50 ft | - | - | - | - |
Sails
Hartley 35 Lively Trimaran - MAINSAIL
| Luff | 34 ft - (10363 mm) |
|---|---|
| Foot | 15.5 ft - (4724 mm) |
| Leech | * 36.81 ft - (11220 mm) |
| Tack Angle | * 88.52 ° |
| Diagonal | 37 ft - (11278 mm) |
| Head (inches) | 4 in - (102 mm) |
| Area | * 268.46 ft² |
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Hartley 35 Lively Trimaran - JIBSAIL
| Luff | 37.5 ft - (11430 mm) |
|---|---|
| Foot | 16.5 ft - (5029 mm) |
| Leech | 33.5 ft - (10211 mm) |
| Length Perpendicular | * 14.74 ft - (4493 mm) |
| Area | * 276.36 ft² |
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Hartley 35 Lively Trimaran - JIBSAIL
| Luff | 30 ft - (9144 mm) |
|---|---|
| Foot | 14 ft - (4267 mm) |
| Leech | 26 ft - (7925 mm) |
| Length Perpendicular | * 12.12 ft - (3694 mm) |
| Area | * 181.87 ft² |
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Hartley 35 Lively Trimaran - STORMJIB
| Luff | 22.75 ft - (6934 mm) |
|---|---|
| Foot | 10.5 ft - (3200 mm) |
| Leech | 17 ft - (5182 mm) |
| Length Perp | * 7.4 ft - (2256 mm) |
| Area | * 84.21 ft² |
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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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