Marine Engine Driver (MED) 3 

The MED 3 is the first engineering qualification required. You require less sea time to be eligible for a MED 3 than you do a Master Class 5 so many choose to complete the MED 3 before completing their Master Class 5. Most vessels less than 24 metres in length do not carry seperate engineers and the master usually holds both deck and engineering qualification.
A MED 3 qualification will enable you to act as Engineer on a vessel <250kW up to 100nm from land or <500kW < 15nm from land.
To qualify for the Certificate of Comepetency you will need 6 months seatime which includes engineering duties.
To enrol in the MED 3 course click HERE
To gain the Certificate of Competency see additional information from NSW Maritime HERE