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Officer under training need 3 years to fulfill their training to become acting sub lieutenant. Before that, rank in 3 years are : -

1st year - Officer Cadet
2nd - 3rd year - Midshipmen

Otherwise, for IPTA under KDSK and KDSM, the Midshipmen will separate into 2 categories :-

2nd year -Junior Midshipmen
3rd year - Senior Midshipmen

to know detail about ROTU and Royal Malaysian Navy..
please connect to www.navy.mil.my