British Seagull Forty Featherweight vs Mariner 2hp International (Yamaha-built 6A1)
Forty Featherweight
2hp International (Yamaha-built 6A1)
| Spec | British Seagull Forty Featherweight | Mariner 2hp International (Yamaha-built 6A1) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 2 HP | 2 HP |
| Displacement | 64 cc ← | 43 cc |
| Configuration | 1 Cyl / Single | 1 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 12 kg (26 lbs) | 10 kg (22 lbs) ← |
| Mechanical & Electrical | ||
| Gear Ratio | 2.1 | 2.08 |
| Alternator | 0 W | 0 W |
| Fuel Delivery | Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | Champion D16 | NGK B7HS |
| Engine Oil | SAE 30 (10:1) | TC-W3 2-Stroke |
Technical Comparison Analysis
Power & Displacement
Comparing the British Seagull Forty Featherweight and Mariner 2hp International (Yamaha-built 6A1) shows a displacement difference of 21cc. The British Seagull features a larger 64cc block, which typically provides superior low-end torque and better hole-shot performance when pushing heavy loads or reaching planning speeds.
Weight & Rigging
In terms of transom weight, the Mariner is the lighter option at 10kg, offering a weight saving of 2kg over its competitor. This weight reduction is critical for smaller hulls or boats with limited transom capacity where every kilogram affects the center of gravity and drainage efficiency.
Electrical & Features
For boats equipped with modern electronics, sonar, and shallow-water anchors, the Mariner offers the best charging performance with a 0W alternator. Choosing the right power-to-weight profile between these two 2-stroke engines depends heavily on your specific boat's displacement and daily power requirements.