Introduction
The Mod Seatek 725 Plus is an updated version of the previous Mod. 6 4V 10 D engine, now featuring a closed-loop fresh water cooling system. It is highly regarded for its power and reliability, making it a popular choice for military fast interceptors and high-performance speed boats.

Specifications
- Configuration: 6 cylinders in line
- Bore/Stroke: 127/135 mm
- Total Displacement: 10.3 liters
- Valves: 4 per cylinder
- Dry Weight: 910 kg (2002 lbs)
- Max Output: 533 kW (725 HP) at 3100 rpm
- Fuel Consumption: 195 gr/kWh (5.00 Ounce/Hph)

Technical Features
- Diesel 4-stroke direct injection
- Compression Ratio: 14:1
- Max Torque: 2080 Nm at 2200 rpm
- Maintenance Cycle: Every 250 hours
- Cooling: Closed-loop water cooling with Jabsco sea water pump and titanium plate heat exchanger
- Turbocharging: Water-cooled Schwitzer turbo with intercooler and waste-gate
- Electrical System: 24V with 80A alternator

Standard Equipment
- Smoke limiting system
- Mechanic governor
- Water-cooled waste gate
- SAE2 flywheel housing
- 24V electric system with insulated pole 80A alternator
- Dry air filter with stainless net
- Water-cooled riser and exhaust manifold
- Intercooler and manual sump drain pump
- Analogic gauge connections

Optional Equipment
- Flexible mounting
- Fuel water heat exchanger
- Riser connection kit
- Auxiliary pump for power steering
- Analogic gauge set
- Seatektronic
- Belt drive bilge pump with electromechanic control

Performance Curves
The document includes performance curves for engine speed, power, torque, and fuel consumption, indicating optimal operating conditions and efficiency.

Compliance
The engine is IMO compliant and adheres to the CE Directive 2003/44.