GRAMPIAN 37 (PORTER & HAYLETT)
Specifications
Hull
| LOA | 36.83 ft |
| LWL | 29.25 ft |
| Beam | 10.5 ft |
| Draft | 5.25 ft |
| Displacement | 13,228 lb |
| Ballast | 6,173.5 lb |
| Hull speed1.34·√LWL | 7.2 kn |
About the GRAMPIAN 37 (PORTER & HAYLETT)
The Grampian 37 is a robust, heavy-displacement cruising sloop designed by McGruer and built by Porter & Haylett in the UK. Production records indicate a build year of 1979, with the exact total hull count remaining unverified in available data.
- Best for:
- This vessel is best suited for conservative coastal cruisers and those seeking a stable, comfortable platform for shorthanded sailing, given its high comfort ratio and moderate performance metrics.
- Bluewater capability:
- With a displacement of 13228.0 lb and a capsize ratio of 1.78, the Grampian 37 exhibits strong offshore stability and seaworthiness, making it a capable bluewater cruiser.
- Comparables:
- Comparable vessels include other British-built heavy displacement cruisers from the late 1970s, such as the Hallberg-Rassy 37 or similar McGruer designs, which share similar displacement and beam characteristics.
Performance
ORC Performance Data(1 certificate)
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 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 24 |
|---|---|---|---|---|---|---|---|---|---|
| 52° | 3.1 | 4.3 | 5.2 | 5.8 | 6.3 | 6.5 | 6.7 | 6.8 | 6.7 |
| 60° | 3.4 | 4.5 | 5.4 | 6.1 | 6.5 | 6.7 | 6.9 | 7.0 | 7.0 |
| 75° | 3.5 | 4.7 | 5.6 | 6.3 | 6.7 | 6.9 | 7.1 | 7.3 | 7.3 |
| 90° | 3.3 | 4.6 | 5.7 | 6.4 | 6.8 | 7.0 | 7.2 | 7.5 | 7.7 |
| 110° | 3.4 | 4.8 | 5.8 | 6.6 | 7.0 | 7.3 | 7.5 | 7.8 | 8.0 |
| 120° | 3.3 | 4.6 | 5.7 | 6.5 | 7.0 | 7.3 | 7.6 | 8.1 | 8.3 |
| 135° | 2.9 | 4.2 | 5.2 | 6.1 | 6.7 | 7.1 | 7.5 | 8.1 | 8.7 |
| 150° | 2.5 | 3.6 | 4.6 | 5.5 | 6.3 | 6.8 | 7.1 | 7.7 | 8.3 |
| Beat VMG | 1.9 | 2.7 | 3.4 | 3.9 | 4.2 | 4.5 | 4.6 | 4.7 | 4.5 |
| Run VMG | 2.1 | 3.1 | 4.0 | 4.8 | 5.5 | 6.1 | 6.6 | 7.2 | 7.8 |
Pricing
We don't have market pricing data for the GRAMPIAN 37 (PORTER & HAYLETT) 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 36.83ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
We don't have enough data on the GRAMPIAN 37 (PORTER & HAYLETT)yet 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 GRAMPIAN 37 (PORTER & HAYLETT)? 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 GRAMPIAN 37 (PORTER & HAYLETT)?
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Used sails that fit the GRAMPIAN 37 (PORTER & HAYLETT)
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