Maritime Emission Manager Course

There is a significant number of redundant machinery on board ships; this allows ship operation when one fails as well as for safety-critical situations where two machinery needs to simultaneously operate. In practice, redundant machinery is normally used more than necessary. This could include any type of machinery in particular fans and pumps. Any reduction in use of such machinery can lead to energy efficiency.

Proper planning of the use of number of machinery versus operation mode is an effective way of achieving this objective. Use of simultaneous use of multi machinery in parallel could be reduced via advanced planning and decision making on the number of machines to be used; taking into account the actual operational requirements. For example, when ship is in port, the plan should include switching off one or two engine room ventilation fans, as main engine is not operating any more. Another example is the mooring equipment. When mooring equipment is not needed, the related pumps and machinery could be switched off.

To ensure safe operation, all these need to be proactively planned and executed. Without daily planning and establishment of relevant processes, the task of reduction in energy use cannot be accomplished. As emphasized before, coordination between deck and engine departments are of paramount importance for an effective and at the same time safe action to avoid misunderstanding or unexpected consequences (MariEMS 2017).