I generally do this with every career I start ...
I go out and tour the harbour and run a few sea trials close to port then return to base ...
By running a short harbor tour and close in sea trials this improves the quality of the entire crew as each man is credited with one patrol. It also allows me to give a specialty to one of the petty officers or a officer after the patrol is over .
And like stated it makes it more realistic to me anyway's