MG RS34
Specifications
Hull
| LOA | 34 ft |
| LWL | 29.53 ft |
| Beam | 11.2 ft |
| Draft | 6.5 ft |
| Displacement | 7,850 lb |
| Ballast | 2,469.6 lb |
| Hull speed1.34·√LWL | 7.3 kn |
Rig & Sails
| Iforetriangle height | 38.71 ft |
| Jforetriangle base | 11 ft |
| Pmainsail luff | 42.07 ft |
| Emainsail foot | 15.5 ft |
| FLforestay | 11 ft |
| Mainsail | 565 sq ft |
| Jib (100%) | 212.9 sq ft |
| Spinnaker | 361.9 sq ft |
About the MG RS34
Based on an IOR 3/4 ton design 'Roller Skate' (1982). (Prototype was 'Seren Wib') Available in Grand Prix or Racer/Cruisers versions. A number of other boats were built to this design besides this one from MG.
The MG RS34 is a rare, performance-oriented cruiser designed by Rob Humphreys and built by Marine Glass (UK) in 1983, with only 15 hulls produced. Its fractional sloop rig and fin keel configuration reflect a design philosophy focused on sailing efficiency rather than mass-market volume.
- Best for:
- This boat suits experienced coastal cruisers and performance-oriented sailors who prioritize sailing dynamics and a responsive helm over heavy displacement comfort. It is well-suited for those who appreciate a lightweight, agile vessel with a proven track record for upwind performance.
- Bluewater capability:
- With a displacement of 7850.0 lb and a capsize ratio of 2.26, the RS34 is capable of coastal and nearshore passages but lacks the heavy ballast and robust construction typically preferred for extended bluewater voyaging.
- Comparables:
- Comparable to other 1980s fractional sloop designs like the O'Day 35 or Catalina 34, the RS34 offers similar length but with a significantly lighter displacement and narrower beam. It competes with performance cruisers of the era that favor a lower D/L ratio for better acceleration and handling.
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 | 6 | 8 | 10 | 12 | 14 | 16 | 20 |
|---|---|---|---|---|---|---|---|
| 52° | 5.0 | 6.0 | 6.5 | 6.7 | 6.8 | 6.8 | 6.9 |
| 60° | 5.3 | 6.2 | 6.6 | 6.8 | 7.0 | 7.0 | 7.1 |
| 75° | 5.6 | 6.4 | 6.8 | 7.0 | 7.2 | 7.4 | 7.5 |
| 90° | 5.5 | 6.4 | 6.8 | 7.2 | 7.4 | 7.6 | 8.0 |
| 110° | 5.3 | 6.4 | 6.9 | 7.3 | 7.7 | 8.0 | 8.4 |
| 120° | 5.2 | 6.2 | 6.8 | 7.2 | 7.6 | 8.0 | 8.7 |
| 135° | 4.6 | 5.7 | 6.5 | 6.9 | 7.3 | 7.7 | 8.5 |
| 150° | 3.9 | 4.9 | 5.8 | 6.5 | 7.0 | 7.3 | 8.0 |
| Beat VMG | 3.3 | 4.0 | 4.5 | 4.7 | 4.8 | 4.9 | 4.9 |
| Run VMG | 3.3 | 4.3 | 5.1 | 5.8 | 6.4 | 6.8 | 7.5 |
Market Price
Estimated Cost of Ownership
Based on 34ft LOA. Actual costs vary by condition, usage, and local rates.
Known Issues & Pre-Purchase Inspection
1 reported issues across 1 systems for the MG RS34, compiled from owner reports in sailing forums and owner-association material.
Unlock the full inspection report
Thinking of buying a MG RS34? 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 1 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
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Which engine powers your MG RS34?
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Brands sometimes mentioned for this model: Yanmar, Universal, Kubota — is it one of these?
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Used sails that fit the MG RS34
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