Officer: Stages and standards

So you have decided to join the Royal Navy as an Officer, but before you can start your training we will need to conduct a number of physical and mental assessments. Once successfully completed you will begin your Royal Navy journey to help you prepare, here are the stages that you have to complete:

  1. Pre-joining Fitness Test (PJFT)
  2. Interview (there is no physical test at this stage, but you need to pass it to progress to the next)
  3. The Admiralty Interview Board (AIB)
  4. Initial Naval Training (Officer) (INT(O))

Each stage has its own assessments, where you’ll need to meet to prove you’re up to the physical demands to commence your Royal Navy training. Don't worry, we are not looking for Olympic Athletes, simply to ascertain you are suitably prepared and ready to commence your Royal Navy journey - we will then take you to the required fitness levels during your Initial Naval Training.

Get fit to join is here to help you get ready for each stage. You can navigate through the process, see exactly what you are required to pass and find out how you can give yourself an edge. 

Initial Naval Training (Officer) (INT(O))

Providing you are selected by the final selection board at the AIB, you will be able to start your Initial Naval Training (Officer) – and your Royal Navy Career – at Britannia Royal Naval College (BRNC) in Dartmouth. INT(O) is your Phase 1 Basic Training, before you move on to Phase 2, the Professional Training that is appropriate to your chosen role.

You will be given an entry date by your Area Career Liaison Officer (ACLO). This information will be provided to allow suitable time for any necessary arrangements.

INT(O) is a 30-week course and is your comprehensive induction into Royal Navy life as an officer. It is a physically demanding course, particularly in the first 15 weeks of Militarisation. You should aim to arrive with a good standard of fitness, but maintaining the levels that meant success at the PJFT as a minimum will stand you in good stead for INT(O). We will then take you to the required standards during your training. 

Running guide

Running will be an essential part of your Initial Naval Training. Some guides to give yourself an edge are below.

2.4 km run on tarmac

Body conditioning exercises

Body conditioning is an important element to ensure you remain physically capable and conditioned for service life.

Body conditioning exercises

Swim assessments

The swimming assessment is conducted in a swimming pool, where you will need to display your ability to operate in water. The swim assessment requires you to swim 50m without touching the sides or the bottom of the pool and climb out unaided within four minutes. 

Swimming assessments


Minimum pass time

50m within 4 mins

This is a pass or fail assessment


Tread water

Additional information

Some additional tips to help in your preparation can be found below.

Additional advice