A Navy small boat needs an engine that fits the vessel, carries the load, and supports the mission. In a 7-meter rigid inflatable boat, space and weight are limited—making compact diesel power especially valuable.
STEYR MOTORS has a documented place in this application. STEYR identifies the RIBCRAFT U.S. Navy 7m RIB among the applications for its SE266E40 engine, and Willard Marine has documented STEYR diesel power in its Navy-focused SEA FORCE 700. (steyr-motors.com, willardmarine.com)
A note on scope
While those references do not explain every Navy procurement decision, the engine’s design helps show why it suits these demanding boats.
Strong Power Without a Large Engine Package
The STEYR SE266E40 delivers 190 kW at 4,000 rpm from a turbocharged, 3.2-liter diesel engine. With a listed dry weight of 340 kg, it combines substantial output with compact dimensions. That balance matters aboard a small vessel carrying personnel, fuel, and mission equipment. (steyr-motors.com)
Torque for a Working Boat
Horsepower is only part of the picture. The SE266E40 produces 530 Nm of torque at 2,550 rpm, providing useful turning force below its maximum rated speed. Actual acceleration and load-carrying performance depend on the complete installation, including the drive, propeller, and vessel weight. (steyr-motors.com)
Features That Suit Military Marine Applications
STEYR lists compact monoblock construction, dual-circuit cooling, and multi-fuel capability among the SE266E40’s features. These characteristics are relevant to specialized marine applications where installation requirements and fuel compatibility matter. Approved fuel use must follow the specifications for the individual engine configuration. (steyr-motors.com)
Compact monoblock
Construction suited to tight installations.
Dual-circuit cooling
A cooling design relevant to marine duty.
Multi-fuel capability
Follow approved fuels for your configuration.
A Fit for the Navy’s 7-Meter Platform
The Navy’s 7-meter RIB is designed for varied duties. RIBCRAFT describes its platform as suited to boarding operations, maritime interdiction, security patrols, and force protection, while accommodating shipboard storage constraints. A compact inboard diesel fits naturally into those requirements. (ribcraftusa.com)
Willard Marine’s SEA FORCE 700 brochure documents a STEYR diesel paired with a MerCruiser Bravo Two X sterndrive—an example of the engine operating as part of a complete naval boat propulsion package. (willardmarine.com)