The S.E.M.T. Pielstick PA6B STC is a high-speed, four-stroke marine propulsion engine equipped with Sequential Turbocharging (STC), designed to deliver rapid acceleration, enhanced fuel efficiency, and strong part-load performance. Built in V-type configurations (typically 12V, 16V, and 18V), the PA6B STC is a widely used engine in naval, commercial, and governmental marine applications. Power output ranges from approximately 4,000 kW to 8,000 kW, depending on the number of cylinders and specific configuration. Torque figures are typically in the range of 25,000 Nm to 60,000 Nm, offering strong propulsion performance and excellent dynamic response. The STC (Sequential Turbocharging) system enables optimal turbocharger performance across the engine’s load range by engaging turbochargers in stages, which enhances low-load efficiency and responsiveness. The PA6B STC operates on marine diesel oil (MDO) and can be adapted for use with heavy fuel oil (HFO) in some variants. The engine meets IMO Tier II emission standards and can be upgraded to IMO Tier III compliance with the integration of Selective Catalytic Reduction (SCR) systems.

ENGINE SPECIFICATIONS
POWER    MAXIMUM TORQUE  Certification   
8,000 KW    60,000 Nm         IMO Tier II / III (With SCR) 

NEW GENUINE / REMAN