SOLAS Saturn Stainless Steel 3-Blade Propeller 11-7/8x10 for Mercury 25-70 HP

The SOLAS Saturn series is a high-performance line of stainless steel propellers engineered to boost your boat’s performance and withstand the harshest conditions. The 11-7/8x10 model is an ideal choice for Mercury/Mariner outboard engines from 25 to 70 HP, offering a balance of excellent acceleration and strong top-end speed. Crafted from stainless steel with a high percentage of chromium, nickel, and molybdenum, it boasts superior rust resistance in saltwater and exceptional blade strength – no flexing under heavy loads, meaning more of your engine’s power is converted into thrust. This makes the SOLAS Saturn prop a fantastic upgrade from a standard aluminum prop, delivering quicker planing, higher cruising speeds, and improved fuel efficiency.

The SOLAS Saturn 11-7/8x10 features a “large ear” blade design – the blades have increased surface area, which boosts thrust at lower RPMs and improves the boat’s handling. You’ll notice this in faster acceleration out of the hole and stable operation in turns or choppy water, as the prop bites the water firmly and minimizes slip. The stainless steel material not only prolongs the propeller’s life but also enhances performance: the stiffer blades reduce vibration and hold their shape at high speeds, resulting in smoother, more efficient motion of the boat.

Use Cases & Recommendations:

• Ideal for small to mid-sized boats (approx. 3–5.5 m) – such as fishing boats, RIB inflatables, jon boats and other runabouts powered by Mercury engines 25, 30, 40, 50, 60, or 70 HP
• Great for high-load and watersport scenarios – delivers improved holeshot when pulling water toys (banana boats, towable tubes) or when carrying extra passengers and gear, getting you on plane quickly and keeping you there
• Built for both fresh and saltwater use – premium stainless steel and polished finish resist rust and marine growth, ensuring reliable performance in sea conditions
• Wide compatibility – fits a broad range of Mercury/Mariner 2-stroke and 4-stroke models (25–70 HP, 13-spline) – e.g., Mercury 25, 30, 40, 50, 60, 70; Mariner equivalents; even certain Mercruiser Alpha One stern drives with 3-1/4″ gearcases. Verify your engine has a 3.25″ gearcase and 13-spline shaft for proper fit