I'm sure there is someone on here who knows for sure, but in the meantime: From what I remember when I had my submarine medical it was pretty much the same as the joining one. Height, weight, drop & cough etc, but with a vitalograph test thrown in. What that involves is blowing into a tube for as long as possible to test lung capacity.
Edited to add: It was 17 years ago when I did mine and I often have trouble remembering what I did last week nowadays, so please in no way take my answer as Gospel.
Yep - more or less what p-ex-p said. Your medical history will be more closely scrutinised - history of asthma, skin problems such as dermatitis, skull/chest cavity injuries, pulmonary system etc. Problems with any of these need not necessarily preclude you from the service but may require closer analysis. You will also get a chest x-ray sometime in Phase One.
Just be open and honest. What might be perceived as a potential problem often isn't. Not many peeps fail the medical. Even if they do, they get offered general service.
PS - I'm not a medic. All medical problems are dealt with by qualified medical staff. This is all based on my experience and current working environment.
I am having my medical tomorrow. I am going in as XSM Officer and all i have been given is an extra form to complete.
I have been told that they are going to concentrate more on ears and lung capacity. I had grommets when I was younger, but I when down at the AIB last year they Naval Surgeon said it won't be a problem!
The Vitalograph spirometer isn't used to measure lung capacity per se, but is looking at how quickly you can evacuate your lungs (expressed as a percentage of the total volume/time). If you have a large lung capacity, it is harder to acheive a pass mark regardless of your level of fitness.
You have to blow out a percentage (90%?) of the total volume of your lungs in a specified time. If you have a large lung capacity, you will have to blow out at a greater rate to acheive the same percentage than someone with smaller lungs. Having a large lung capacity is not a bad thing, but being unable to blow out at a sufficient rate whilst ascending from depth with lungs filled with air at pressure is a bad thing.
I have just come back from my XSM medical.. i am happy to say I passed..
Just to let you know...
the tests are really easy and very basic.
All I had to do was:
Breath into a asthma breath gage thing (not too sure on the actual name) - you get three attempts. 1 sitting down, 1 standing up and a final one of your choice... usually best to stand!
Hearing test - pretty simple, just listen to the beeps and if you can hear them you either click a button or say yes!
General health check - Height, Ears, Nose, Mouth, Heart Rate, Blood pressure, checks to see if all your organs are there and in the right place, "cough test", external genital check, weight, walking in a straight line, walking backwards, tip toes and heels.
You also have an eye test - this will either be done before had by an optician or will be done there. You have to also do something with coloured lights. There are two lights and you have to say which ones you see; green, red or white.. simple!
There is a questionnaire to fill in with one of the Doctors or admin staff. This is pretty simple, just make sure you know of any birth marks, scars, alcohol intake (in units) and how many cigarettes you some a week.
Can I ask, if you fail this medical are you discharged or simply transfered to the General Service? I had a spot of trouble passing the hearing test first-time around, barely passed it and I think the GP was only inclined to pass me because I had a letter from a hearing specialist.