Steel Waterjet S-4L

The Kongsberg Kamewa S-4L waterjet delivers exceptional efficiency and durability for high-performance vessels. Designed with advanced hydrodynamic technology, it ensures superior manoeuvrability and reliability in the most challenging conditions.

The S-4L waterjet is part of Kongsberg Maritime’s steel series waterjets, engineered for vessels requiring robust propulsion and precise control. At its core is a fully duplex stainless steel mixed-flow pump, optimised through computational fluid dynamics (CFD) and extensive testing at our very own Hydrodynamic Research Centre. This combination ensures outstanding performance across a wide range of operating profiles.

Highest performance and durability

The S-4L features fully duplex stainless steel components, ensuring long service life and minimal maintenance. Built-in bearings maintain correct impeller positioning and tip-clearance, ensuring highest pump efficiency in the market segment.

Precise manoeuvrability and excellent low-speed performance

Our unique reversing bucket and steering nozzle design provide superior position keeping and handling at both low and high speeds, reducing fuel consumption and emissions during harbour manoeuvres while maintaining speed in high-speed turns.

Key features

• Size range: 100–180
• Power range: 10,200–33,000 kW
• Duplex stainless steel mixed-flow pump
• Unique reversing bucket and steering nozzle design providing
• Precise manoeuvrability
• Excellent low-speed performance
• Inboard hydraulic cylinders enable
• No oil-to-sea interface
• Improved serviceability
• Customised and optimised inlet duct design for application enables highest performance

Key advantages

• Superior manoeuvrability and position keeping
• Premium quality components for maximum durability
• Extended service intervals: up to 25,000 hours or 5 years for wear parts

Control systems for S-4L waterjets

Our waterjet control systems range from standardised solutions to multi-station configurations and can be fully customised according to customer requirements. By choosing our control systems, we can guarantee safe and reliable operations with highest system performance.

Market segments

Ideal for large applications across all segments.