British Seagull Silver Century Plus vs Yamaha 5hp (2-Stroke)
Silver Century Plus
5hp (2-Stroke)
| Spec | British Seagull Silver Century Plus | Yamaha 5hp (2-Stroke) |
|---|---|---|
| Power & Performance | ||
| Horsepower | 5 HP | 5 HP |
| Displacement | 102 cc | 103 cc ← |
| Configuration | 1 Cyl / Inline | 1 Cyl / Inline |
| Weights & Dimensions | ||
| Dry Weight | 17 kg (37 lbs) ← | 21 kg (46 lbs) |
| Mechanical & Electrical | ||
| Gear Ratio | 4.0:1 | 2.08 |
| Alternator | 0 W | 60 W |
| Fuel Delivery | Villiers Carbureted | Carbureted |
| Maintenance | ||
| Spark Plug | Champion D16 | NGK BR7HS |
| Engine Oil | SAE 30 (10:1) | Yamalube 2-M |
Technical Comparison Analysis
Power & Displacement
Comparing the British Seagull Silver Century Plus and Yamaha 5hp (2-Stroke) shows a displacement difference of 1cc. The Yamaha features a larger 103cc 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 British Seagull is the lighter option at 17kg, offering a weight saving of 4kg 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 Yamaha offers the best charging performance with a 60W 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.