The navy has now had women aboard ships for over twenty years, and next year it will be ten years since women were allowed to serve on warships (but not subs). Lessons have been learned. A few women in a crew can cause problems, but once about twenty percent of the crew is female, most of the problems disappear. But there are still problems. Although there is not supposed to be any sexual activity between male and female sailors, there is. At any given time, 15-20 percent of female sailors are pregnant. It's not unusual for ships on long cruises...