Grampian 30 Tall
Description
The Grampian 30 Tall Rig is a performance-oriented variant of Alex McGruer’s standard Grampian 30, introduced around 1974 by Grampian Marine to boost light-air speed and appeal to racers, featuring a taller masthead sloop rig that adds approximately 3–4 feet to the standard mast height (total I-dimension around 38–39 feet vs. 35 feet), increasing sail area from 390 sq ft to roughly 430–440 sq ft with a larger mainsail and overlapping genoa. This modification lowers the PHRF rating to around 168–174 (vs. 180 for the standard rig), improves the SA/D ratio to ~16, and enhances upwind performance in moderate conditions while retaining the boat’s stable, full-keel or centerboard underbody, 8,600-pound displacement, and spacious interior. Built in limited numbers before Grampian’s 1977 closure, the Tall Rig is prized on the used market for its balance of cruising comfort and competitive edge, though it requires attentive sail handling in heavy air due to increased heeling moment; owners often pair it with a roller-furling headsail and consider mast-step reinforcement during surveys.
Construction Details
| Designer | Alex McGruer |
|---|---|
| Builder | Grampian Marine |
| Length | 30.000 ft |
The standard boat dimensions
| i | 40 ft |
|---|---|
| j | 11.50 ft |
| p | 35.50 ft |
| e | 11 ft |
| p2 | - |
| e2 | - |
| i2 | - |
| j2 | - |
| I | J | P | E | P2 | E2 | I2 | J2 |
|---|---|---|---|---|---|---|---|
| 40 ft | 11.50 ft | 35.50 ft | 11 ft | - | - | - | - |
Blueprints
Sails
| Sail Type | MAINSAIL |
|---|---|
| Luff | 35.5 ft - (10820 mm) |
| Foot | 11 ft - (3353 mm) |
| Leech | * 36.56 ft - (11143 mm) |
| Tack Angle | * 88 ° |
| Diagonal | * 36.8 ft - (11217 mm) |
| Head (inches) | * 5.25 in - (133 mm) |
| Area | * 201.84 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | 30 ft - (9144 mm) |
| Foot | 11 ft - (3353 mm) |
| Leech | 27.5 ft - (8382 mm) |
| Percentage LP | * 87.65 % |
| Length Perpendicular | * 10.08 ft - (3072 mm) |
| Deck Angle | * 7.61 ° |
| Area | * 151.14 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | 39 ft - (11887 mm) |
| Foot | 38.83 ft - (11835 mm) |
| Leech | 17.75 ft - (5410 mm) |
| Percentage LP | * 149.91 % |
| Length Perpendicular | * 17.24 ft - (5255 mm) |
| Deck Angle | * 47.6 ° |
| Area | * 336.25 ft² |
| Sail Type | ASYMMETRICAL |
|---|---|
| Luff | * 39.54 ft - (12052 mm) |
| Foot | * 18.97 ft - (5782 mm) |
| Leech | * 36.38 ft - (11089 mm) |
| Perc LP | * 165 % |
| Area | * 563 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 39.54 ft - (12052 mm) |
| MidGirth | * 20.7 ft - (6309 mm) |
| Foot | * 20.7 ft - (6309 mm) |
| Perc LP | * 180 % |
| Area | * 696 ft² |
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.