Choey Lee Offshore 31 Sloop Rig
Description
The Cheoy Lee Offshore 31 Sloop is a classic pocket bluewater cruiser built by Cheoy Lee Shipyard Ltd. in Hong Kong starting in 1968 (production into the early 1970s; approximately 150 hulls total across variants per owner association and sailboatdata.com). It was designed by L. Francis Herreshoff (via Cheoy Lee adaptations; essentially an evolution of the Bermuda 30, which was based on Herreshoff's H-28 offshore ketch—extended counter for added LOA, inboard rudder for better handling/protection, and wheel steering options). Special features include its long keel for excellent tracking, stability, and seakindly motion; heavy-duty fiberglass construction (GRP hull/deck, often with teak trim/decks requiring maintenance); traditional masthead sloop rig (or sloop with bowsprit for better anchoring balance; ketch variant also common); compact yet livable interior (sleeps 4, basic galley/head, good headroom); and a reputation as a sturdy, forgiving coastal/offshore pocket cruiser—proven capable (ocean passages logged), with comfortable motion, predictable behavior, and classic lines, though some owners note it's underpowered in very light air compared to the original H-28 due to added weight and modifications.
Construction Details
| Designer | L. Francis Herreshoff |
|---|---|
| Builder | Cheoy Lee |
| Length | 31.000 ft |
| LOA | 31.000 ft |
| LWL | 23.330 ft |
| Beam | 8.750 ft |
| Displacement | 10700 lb |
| Ballast | 3800 lb |
| Max Draft | 3.830 ft |
| Year Built | 1968 |
The standard boat dimensions
| i | 37.50 ft |
|---|---|
| j | 11.50 ft |
| p | 32.66 ft |
| e | 15.58 ft |
| p2 | 25 ft |
| e2 | 11.92 ft |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 37.50 ft | 11.50 ft | 32.66 ft | 15.58 ft | 25 ft | 11.92 ft | - | - |
Sails
Choey Lee Offshore 31 Sloop Rig - MAINSAIL
| Luff | * 32.66 ft - (9955 mm) |
|---|---|
| Foot | * 15.58 ft - (4749 mm) |
| Leech | * 35.47 ft - (10811 mm) |
| Tack Angle | * 87.99 ° |
| Diagonal | * 35.69 ft - (10878 mm) |
| Head (inches) | * 6 in - (152 mm) |
| Area | 254.1 ft² |
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Choey Lee Offshore 31 Sloop Rig - JIBSAIL
| Luff | * 31.38 ft - (9565 mm) |
|---|---|
| Foot | * 15.13 ft - (4612 mm) |
| Leech | * 27.43 ft - (8361 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 13.23 ft - (4033 mm) |
| Deck Angle | * 12 ° |
| Area | 207.51 ft² |
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Choey Lee Offshore 31 Sloop Rig - GENOA
| Luff | * 37.26 ft - (11357 mm) |
|---|---|
| Foot | * 18.48 ft - (5633 mm) |
| Leech | * 35.15 ft - (10714 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 17.25 ft - (5258 mm) |
| Deck Angle | * 4 ° |
| Area | 321.34 ft² |
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Choey Lee Offshore 31 Sloop Rig - SPINNAKER
| Stays | * 37.26 ft - (11357 mm) |
|---|---|
| MidGirth | * 20.7 ft - (6309 mm) |
| Foot | * 20.7 ft - (6309 mm) |
| Perc LP | * 180 % |
| Area | 655.59 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.