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Humphree Interceptor: X450

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The Humphree X450 Interceptor system is suitable for stern drive boats up to 45ft.

Blade length (mm)

Boat size (ft)



The Humphree X450 Interceptor system is suitable for stern drive boats up to 45ft (13.5m)  and shaft drive or waterjet drive up to 45ft (13.5m) depending on hull form and speed. The X-series kit includes 2 x interceptor units with drive motors, 1 x digital colour helm control, 1 x central digital control unit and 10m cable kit. Auto trim function is included in the standard X-series software. Upgrade options include transom mounting plates, Auto List control software, Coordinated turn software, Active control software (combined auto list & auto list) and Active+ software (combined auto trim, auto list and coordinated turn). The Humphree X-series interceptors operate on 12v or 24v DC.

Humphree X-Series
Humphree have introduced the new X-series interceptors intended mainly for boats from 25 feet up to 60 feet.

Four sizes, X300, X450, X600 and X750 are available, all with the powerful 50mm (2”) stroke needed for superior control of dynamic hull motions.

The X-Series delivers the same reliability and superior performance as the other Humphree interceptors but the X-Series range is limited to four standard sizes. The X-Series features the same control system, ultra-fast servo actuators and control panel. For boats with stern drive a special “13 degree” mounting plate is available for a perfect fit.

  • Available sizes: 300 – 750mm
  • Stroke length: 50mm
  • Mounting plates: 20mm composite or 20mm aluminium
  • Transom thickness:

Short shaft kit (standard),<80mm transom thickness.

Long shaft kit (option),<140mm transom thickness

Bureau Veritas approved through-hull design

Not An Ordinary Trim Tab
The interceptor system creates a hydrodynamic lift force by intercepting the water flow underneath the hull. In that way the interceptor creates a lift force acting on the hull instead of on the trim device itself. This creates a greater force than a traditional trim tab and is 25% more efficient.

Award Winning
Humphree interceptors are multiple industry award winning for engineering design and performance. Humphree Interceptors are made of composite materials for optimum performance, corrosion resistance and light weight. The Humphree interceptors have superior ability to add lift force to greatly reduce resistance in the water, add speed, improve acceleration and visibility at the helm. Humphree’s interceptors are available in many shapes and sizes. From our standardised X-Series to the heavy duty HLS-Series. Most of the Humphree interceptor models can be custom shaped to fit exactly to the hull.

Patented Design
Humphree's patented design of the Interceptor is a compact and robust unit that has an adjustable blade that goes down vertically into the water. Due to that it doesn’t work against the water pressure that it builds up under the hull, it can be adjusted very fast and with high precision. Its compact design also makes it less vulnerable to impacts.

Free From Hydraulics
Humphree Interceptors are free from hydraulics. Because of this, it doesn’t need to work against the hydrodynamic lift force that it builds up under the hull as it’s operated by a 24 VDC brushless electric motor. With advanced controls, the system operates very fast and with high precision. The Humphree trim system is completely free from hydraulics.

Low Maintenance
The main parts of the Humphree Interceptor is constructed in composite material which means that it is maintenance free for changing zinc anodes, as the material is not affected by salt water. However we recommend to check the system on yearly basis to keep it in trim and to discover any possible damage to the system.

If there is any damage to the Interceptor we can supply any individual parts that you might require for service.

Humphree Interceptor Guide

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