My best friend aboard ship, a married fellow with his here in Japan with him at the time, at the end of the workday when we were here in our homeport, used to say of the Navy, "They don't just tell you when you're going home. They tell you if you're going home."
The number one most frequently repeated phrase you will hear in the Navy is, "The needs of the Navy come first." And they mean that with all their heart and soul in every way you can imagine and some you can't. The one thing you can be sure of is that every time you are hearing it it will be in regards to something you do not like.
"Join the Navy and see the world" was the old recruiting phrase. They don't lie about that. But the most important thing to keep in mind regarding that is that you will soon find out what they told you in elementary school is true....the world really is 3/4 covered with water. You seen one stretch of ocean from horizon to horizon for every direction, you've seen them all.
When my ship was underway, I worked 7 hours on, 7 hours off, 5 hours on, 5 hours off. That was 7 days a week. If we took on fuel, supplies, had drills, emergencies, etc. that came during my off watch, then it was just a case of tough sh*t, you miss your sleep. The XO said anybody getting more than 4 hours sleep a day wasn't working hard enough. And the s.o.b. meant it.