GRAMPIAN CLASSIC 31
Specifications
Hull
| LOA | 30.92 ft |
| LWL | 22.29 ft |
| Beam | 8.4 ft |
| Draft | 4.4 ft |
| Displacement | 9,722 lb |
| Hull speed1.34·√LWL | 6.3 kn |
Rig & Sails
| Iforetriangle height | 33.5 ft |
| Jforetriangle base | 13.5 ft |
| Pmainsail luff | 29.5 ft |
| Emainsail foot | 14.5 ft |
| FLforestay | 13.5 ft |
| Mainsail | 457.1 sq ft |
| Jib (100%) | 226.1 sq ft |
| Spinnaker | 384.4 sq ft |
About the GRAMPIAN CLASSIC 31
The Grampian Classic 31 is a rare, single-year production vessel designed by Peter Van Dine and built by Grampian Marine Ltd. (CAN) in 1964. With a build count of ? hulls, this boat represents a unique snapshot of mid-60s Canadian boatbuilding, featuring a heavy displacement hull with a comfort ratio of 35.46.
- Best for:
- This boat suits experienced coastal cruisers and traditionalists who value a heavy, stable platform with a cutter rig for versatile sail plans. Its significant displacement of 9722.0 lb and low capsize ratio of 1.58 make it ideal for those prioritizing seakworthiness over high-speed performance.
- Bluewater capability:
- With a displacement of 9722.0 lb, a capsize ratio of 1.58, and a fin keel, the Classic 31 is well-suited for offshore passages, offering excellent stability and motion comfort in heavy seas.
- Comparables:
- Comparable to other heavy-displacement Canadian cutters from the 1960s, such as the Island Packet 32 or early Tartan models, due to its similar D/L ratio of 391.9 and emphasis on offshore stability. It shares DNA with Van Dine's other designs from this era that prioritize comfort and safety over speed.
Direct variant of the GRAMPIAN CLASSIC 31
Near-identical models — same hull, builder and designer, re-badged or lightly changed. Specs and owner-reported issues are typically shared across the group, so a sister model's page may carry detail this one doesn't.
Performance
Estimated Value
Limited DataAsking price by model year
5 listings · boat years 1965–1982 · median $6,000
Each dot is one listing · hover for details · dashed red line marks the median · obvious data-entry outliers (top & bottom 2.5%) excluded.
Estimated Cost of Ownership
Based on 30.92ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
5 reported issues across 5 systems for the GRAMPIAN CLASSIC 31, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a GRAMPIAN CLASSIC 31? This is an in-depth report on the faults this model is known for — so you know exactly what to check when you walk the boat. For the price of a coffee.
- ✓ All 5 specific issues — severity, symptoms & fixes
- ✓ Model-specific pre-purchase inspection checklist
- ✓ Downloadable PDF to take to your surveyor — yours to keep
One-time $2.99 · secure checkout by Stripe · instant access · 30 days online, PDF yours to keep
Similar Sailboats
Which engine powers your GRAMPIAN CLASSIC 31?
We haven't confirmed the engine for this model yet. If you own or know one, tell us — as owners report in, we build an accurate picture over time.
Brands sometimes mentioned for this model: Yanmar — is it one of these?
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Used sails that fit the GRAMPIAN CLASSIC 31
Checking eBay for sails sized to this boat's rig…