Control of all inbuilt propulsion will be regulated via the motor controllers, remotely from the bridge.


A 100m Cargo Ship

Initially, Thrusters will be manufactured in our licensed factory in Subic Bay, Philippines, and trucked to the nearby dry dock, ready for installation at the haul out.

Typically, these Thrusters will be driven by DC electric motors. For a ship that was originally propelled by a 3,000 HP power unit, the same performance will now be achievable using 600 to 750 HP. In this example, only 448 kW is needed to drive the ship at the same speed as before the refit.

This 448 kW would be divided between 4 or 6 units.

  • For a 4 Thruster installation: 4 x 112 kW units would be used.
  • For a 6 Thruster installation: 6 x 75 kW units would be used.

Suitable provision would need to be made to strengthen the hull in order to mount each Thruster. This is a simple engineering task.

At dry-docking, the propeller would be removed, as well as the gearbox (if not required).

To supply the 448 kW a 500 kW generator is coupled to the main engine so that it can run at the same RPM as the engine at its most efficient RPM. The engine will only need to use about 25% of the originally required HP; or better still, an off-the-shelf 500 kW generator can be installed. Control of all Thrusters is via the motor controllers, remotely from the bridge. All of this equipment is already available off-the-shelf.

If desirable, additional Thrusters can be attached along the turn of the bilge – INBOARD – to increase top speed with only about 25% of the extra energy/fuel required.

A Fishing Trawler

With trawler installations, both aspects of their duty must be considered; i.e. travelling to the fishing grounds and then trawling.

An original 500 HP trawler will now only need about 125 HP in total. This broken up into 3 units = 40 HP each. The DC motors of this capacity are quite small, and in this case 3 X 50 HP units can be used to allow a lot of spare grunt.