15M ¼ 15 Propeller
Product description
The 15 ¼ × 15-M Propeller — with a large diameter, ultra-durable stainless steel build, and three-blade design — delivers strong low-end thrust and cruising speeds over 45 mph for your 150–200 HP boat. A reliable choice for heavy-duty commercial use or high-performance recreation in saltwater conditions.
Product Summary
1. The 15 ¼ × 15-M propeller is engineered for Yamaha 150 to 200 HP engines, delivering optimal performance on both heavy commercial and high-performance recreational boats.
2. Its large 15 ¼-inch diameter and 15-M pitch offer excellent low-end pull and fuel-efficient cruising speeds between 30–45 mph.
3. Built from corrosion-resistant stainless steel, it withstands saltwater, sand abrasion, and wave impacts.
4. Operating range is stable from 2250 to 3000 rpm, and it can spin up to 5500 rpm without cavitation — keeping your engine in its peak torque range.
5. Factory testing at 38 mph showed fuel consumption up to 10% lower compared to same-size aluminum propellers.
Technical specifications
| Feature | Value / Description |
| Model | 15 ¼ × 15-M |
| Compatible Engine | Yamaha 150–200 HP (2-stroke & 4-stroke – max 5500 rpm) |
| Propeller Diameter | 15 ¼ inches |
| Pitch | 15-M (3-blade; high thrust + stable cruising) |
| Recommended Operating Range | 2250 – 3000 rpm |
| Optimal Water Speed | 30 – 45 mph |
| Material | Stainless Steel |
| Applications | Water taxi, passenger tour boat, heavy recreational boat ≤ 2 tons |
| Resistance | Corrosion-resistant, sand abrasion-resistant, impact-resistant |
| Warranty | 12 months |
Data is based on factory testing using a 7.5 m fiberglass boat with 6 crew members and 250 kg of side load.
Key technical specifications
Torque
220 Nm
Power
4800-5300 RPM
Material
Stainless Steel
Flexibility
790 MPa
Endurance
5000 RPM In 150h
Motor Horsepower
150 - 200 HP
Torque
● Three-blade design with reinforced root and large diameter delivers up to 220 N·m of effective torque at low RPM (200 HP engine); pulls heavy boats out of the water without cavitation (Hole-Shot).
● 12° rake combined with hydrodynamic camber channels water flow in a spiral, reducing energy loss by up to 8% compared to flat-blade designs.
● 12° rake combined with hydrodynamic camber channels water flow in a spiral, reducing energy loss by up to 8% compared to flat-blade designs.
Horsepower Utilization
● The 15-M pitch keeps the engine in the 5300–4800 rpm range (power peak); enabling high cruising speeds with optimal fuel efficiency.
● Steady 40 mph test with a 200 HP engine recorded 12.0 L/h fuel consumption — 10% lower than a same-diameter 15-pitch aluminum propeller.
● In calm seas, no vibration or cavitation was observed up to the maximum rated RPM.
● Steady 40 mph test with a 200 HP engine recorded 12.0 L/h fuel consumption — 10% lower than a same-diameter 15-pitch aluminum propeller.
● In calm seas, no vibration or cavitation was observed up to the maximum rated RPM.
Flexibility
● Stainless steel: 790 MPa yield strength and 14% elongation; resists bending or cracking under moderate impact.
● Hybrid-resin hub with rubber bushing absorbs up to 60% of torsional shock, protecting the gearbox.
● Hybrid-resin hub with rubber bushing absorbs up to 60% of torsional shock, protecting the gearbox.
Durability
● Dual-layer epoxy coating (on both versions) ensures up to 800 hours of ASTM B117 salt spray resistance.
● 150-hour continuous test at 5000 rpm showed no measurable pitch change or cracking.
● 150-hour continuous test at 5000 rpm showed no measurable pitch change or cracking.
Finish
| Recommended Color & Code | Type of Coating & Visual Finish | Suggested Advantage / Application |
|---|---|---|
| Silver Matte | Epoxy powder coating; low light reflection | Matches most fiberglass hulls; hides scratches well |
| Graphite Black | Semi-matte with microcrystal particles | Camouflages on dark transoms; reduces glare |
| Marine Pearl White | Dual-layer pearlescent gloss | Pairs with white hulls; easy salt stain cleanup |
| Navy Blue | Glossy polyurethane coating | Professional look for patrol boats; good underwater visibility |
| Sport Red | Glossy epoxy with UV-resistant pigment | Enhanced safety visibility; ideal for ski & racing boats |
| Aquamarine Green | Semi-transparent metallic overlay | Blends with shallow waters; unique for ecotourism boats |
| Titanium Grey | Hard anodized + clear lacquer | Maximum abrasion resistance; industrial luxury look |
| Solar Gold | Dual-layer metallic powder coating | Eye-catching for exhibitions; reflects warm light |
| Signal Orange | Matte polyurethane, UV-resistant | Best emergency visibility; recommended for rescue teams |
| Thunder Purple | Glossy metallic with dual-tone shimmer | Unique sunlight effect; ideal for custom branding |
Recommended Color & Code:
Silver Matte
Coating Type & Finish:
Epoxy powder coating; low light reflection
Benefit / Suggested Use:
Matches most fiberglass hulls; minimizes visible scratches
Recommended Color & Code:
Graphite Black
Coating Type & Finish:
Semi-matte with microcrystal particles
Benefit / Suggested Use:
Perfect camouflage on dark transom; absorbs light and reduces glare
Recommended Color & Code:
Marine Pearl White
Coating Type & Finish:
Dual-layer pearlescent gloss
Benefit / Suggested Use:
Matches white hulls; easy to clean salt stains
Recommended Color & Code:
Navy Blue
Coating Type & Finish:
Glossy polyurethane coating
Benefit / Suggested Use:
Professional look for patrol boats; better visibility underwater
Recommended Color & Code:
Sport Red
Coating Type & Finish:
Glossy epoxy with UV-resistant pigment
Benefit / Suggested Use:
Increased safety visibility; ideal for ski and racing boats
Recommended Color & Code:
Aquamarine Green
Coating Type & Finish:
Semi-transparent metallic coating
Benefit / Suggested Use:
Blends with shallow waters; unique look for eco-tour boats
Recommended Color & Code:
Titanium Grey
Coating Type & Finish:
Hard anodized + clear lacquer
Benefit / Suggested Use:
Maximum abrasion resistance; premium industrial appearance
Recommended Color & Code:
Solar Gold
Coating Type & Finish:
Dual-layer metallic powder coating
Benefit / Suggested Use:
Eye-catching in exhibitions; reflects warm light
Recommended Color & Code:
Signal Orange
Coating Type & Finish:
Matte UV-resistant polyurethane
Benefit / Suggested Use:
Best emergency visibility; recommended for rescue teams
Recommended Color & Code:
Thunder Purple
Coating Type & Finish:
Metallic gloss with dual-tone spectrum
Benefit / Suggested Use:
Unique sunlit appearance; ideal for custom branding
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