Device and Method to Slow Down a Hijacked Ship

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This system will help in slowing down a hijacked marine vessel escaping from authorities. The simple theory behind this invention is based on using the dynamic principle of “Impulse and Momentum.”

This system can be deployed by an aircraft or a ship in pursuit of a target vessel. Once the deployment craft is within range, the torpedo-like device is deployed into the water. This torpedo-like device includes sub-systems such as: drag parachute, hydrofoil, electrical generator, electromagnet, and a high strength tether.

Once the hijacked ship is intercepted, the pod attaches itself to the ship’s hull via an electromagnetic device or a by a suction device depending on the hull’s material properties. The energy requirements for this suction or electromagnetic force can be generated by a charging propeller.

When the pod is securely attached to the hull, a drag parachute is released. Since the size of this parachute is finite, several of these devices can be deployed to obtain better results. The depth of the drag parachute is controlled by a hydrofoil which is deployed from within the pod.

Details of this system can be seen in the sketch accompanying this brief description.


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  • Name:
    Christian Rojas
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  • Christian's favorite design and analysis tools:
    Ansys, ABAQUS, Solidworks, MS Excel, Matlab/Simulink...etc.
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    The great outdoors and trying to fix the world.
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    Design optimization, Nature, Current World Needs.
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