Hi all, I am currently waiting for my AIB date and am applying to be WO (SM). I've been trawling the internet trying to find out how long you usually stay as one rank depending on your training. i.e. how long are you an Officer Cadet and at what point do you become a Midshipman - Sub-Lieutenant - Lieutenant etc. considering the fact Iâ€™m non-grad. On the RN web site it says promotion to Lieutenant is automatic once you complete you professional training, one site I visited suggested this was on graduating from BRNC, if so would that be after Passing out? After searching the forums i found this: Britannia Royal Naval College, Dartmouth 4x 7 week phases: Militarisation, Pre-IST, IST, Passing Out. Common Fleet Time - 4 months on a ship learning how ships are organised and operate. Culminating in Fleet Board. Initial Warefare Officer's Navigation Course (IWONAV) - 3 weeks at HMS Collingwood. Specialist Fleet Time - 6 months, generally on a small ship gaining bridge experience. IWOC Consolidation - One week consolidation of IWONAV and SFT. IWOC Assessment - One week examination phase. Initial Warfare Officer's Course - 4 months, including OOD course, DO course, leadership training etc ** maybe someone could explain what these abbreviations stand for? Basic Submarine Warfare Course - 13 weeks at HMS Raleigh. - Includes Nuclear General Course at HMS Sultan. Join First Boat as PT3 Trainee - 4 months gaining Dolphins. Non-Complement Warfare Job - Such as CBO (what does this stand for?), 15 months attached to boat. Frigate and Navigating Officer's Course (FNO) - 11 weeks at HMS Collingwood, including dived section. First Complement Appointment - Normally as SCO (abbreviation?) initially for 12-18 months, watch about with Navigating Officer, then becoming Navigating Officer for 12-18 months. Common Appointment / Shore Job - Around 2 years. Advanced Warfare Course - 6 months at HMS Collingwood. - Qualifies to become watch leader. Watch Leader - 2-5 years gaining experience. And finally, if you're up to it / good enough... Submarine Command Course (SMCC) - 'Perisher' - Success leads to XO job and from there to CO. - Failure leads to General Service jobs. The following I have added. - Perisher Course lasts for 24 weeks. Basically, I was wondering if someone could explain what rank you are promoted to after the various training courses.