Boats are like humans in so many ways.
They are born at somewhere some time and then have a real life of their own. Boats are integrated with their people who live, work, struggle inside. Thus, when word comes that boat X will be deactivated, her own people feel very depressed and sometimes humiliated although it is so reasonable to come to an end for everything including boats and human. This is a normal case. In Turkish submarine history there happened three major losses, in which so many valiant submariners were lost with their boats.