How do i use the medic?
 

Last night i was surfaced, visibility low, rain, wind ,swells. A corvette suddeebly appeared at 250m and as i started my evasive maneuvre it sprayed my conning tower with machine gun fire. One of my watchers was injured. I took him to the bow compartment with my qualified medic, but nothing happened to his status

Any idea?

I checked the GWX manual and this is all I could find on the medic

Crew Quarters: Ahhh, relaxation in the smell of damp, sweaty, air on moldy mattresses still warm from the body heat of the previous occupant, and the smell of Frenssen‘s feet – ah, among other things - in the bunk above, or eating with your mates on foldout furniture in the company of same. The crew recovers from fatigue here, but more slowly than in stock Silent Hunter III, though a medic in the compartment will increase the recovery rate. Being in the crew quarters will always reduce fatigue regardless of what else is happening in the U-boat‘s environment or inside the U-boat.

They say time heals all wounds, and in SH3 'time' is definitely the operative word...

You're on the right track. Keep the injured crewman in quarters with the medic, but don't expect a rapid cure. The healing effect is small so it will take a considerable amount of time.

The medic is an unfinished part of the game. I was working on a mod to increase the value of having a medic and to introduce illness and accidents into the game, but ran into programming problems that were beyond my capabilities but apparently not too involved. Bummer.
As it is now, the value is very minimal to nonexistent, as is the helmsman qualification and it is best to award qualifications in the other classes to your crew.

Thanks for all this guys. much appreciated