1500 HP 2800 rpm
Seatek PLUS Series – 12 4V 21
A fully mechanical 12-cylinder engine delivering class-leading power-to-weight ratio in an exceptionally compact format.
Developed from the proven architecture of the PLUS series 6-cylinder engines, it further enhances performance, efficiency, and mechanical reliability.
Engineered for long-range patrol vessels and high-end pleasure craft, the V12 combines low fuel consumption with simplified maintenance and an extended TBO — making it a high-efficiency solution for demanding applications.
Key Features at a Glance
MOD. 12 4V 21 - Technical Specifications
Configuration
Diesel Turbocharged 4 Stroke - Mechanical Injection
No. of Cylinders
12 V 90°
Bore / Stroke
127 / 135 mm
Total Displacement
20.52 Litres
No. of Valves
4 per cylinder
Dry Weight
1850 Kg (4078 lbs)
Max Output
1103 kW (1500 HP)
Max Torque
4600 Nm (2000 rpm)
Max rpm
2800 rpm
Fuel Consumption
220 g/kWh (5,69 Ounce/HPh)
MOD. 12 4V 21 - Technical Specifications
The performance curve chart for the MOD. 12 4V 21 engine illustrates three key parameters plotted against Engine Speed (RPM):
This graph provides a comprehensive view of the engine’s operational efficiency across varying speeds, helping optimize performance and fuel economy.
Torque (Nm)
- Starts around 4450 Nm at 1700 RPM
- Peaks slightly above 4600 Nm at around 1900 RPM
- Gradually decreases after the peak, dropping to about 3700 Nm at 2800 RPM
Power (Kw)
- Starts at around 800kW at 1700 RPM
- Increases steadily and plateaus around 1100kW between 2600–2800 RPM
Fuel Consumption(gr/kWh)
- Begins high at about 220 gr/kWh at 1700 RPM
- Decreases to a minimum (around 197gr/kWh) near 2100 RPM
- Then it rises again towards 215 gr/kWh at 2800 RPM
Dimensions
