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Operation of POD Ships - Discussion on Efficiency comparing Conventional and IN-OUT POD strategy

published on 8 June 2022 - 209 -

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Found on YouTube. Created by "ISSIMS - Innovative Ship Simulation". Originally published on 2021-12-17.

In this movie the efficiency of two different pod operation strategies is compared: With azimuth propeller ships the Pods can be used in two ways to control the speed, e.g. for speed reduction:
1. by adjusting the engine orders, e.g. by reducing the RPMs to get lower speed - this means to drive the ship in the same conventional way as for twin screw vessels,
2. by turning both pods either in- or outward (TOE-IN or TOE-OUT) to reduce the forward thrust and therefore reducing the speed – the engine settings are not changed and kept constant.
In this movie the efficiency of both strategies will be compared with respect to fuel consumption for a scenario for a port arrival manoeuvre using the Fast Time Simulation in the SAMMON Planning tool. The result is: for the conventional strategy the fuel consumption is only one third as of the TOE-IN strategy.
By the way, these movies open up a series of contributions specifically addressing pod operation – please let me know if you have proposals / wishes for the next topic!

ISSIMS GmbH
Innovative Ship Simulation And Maritime Systems

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