But this time round it's easier to stay in touch because they have e-mail on board the ship - that's not happened so much before.
Some of the guys are getting a bit bored now I think. Wanting to get home as soon as possible.
The young officers keep asking when they're going to be able to leave. They're still training and have to study as well as do their normal jobs on board.
We used to all share a cabin, but a few days ago they got to move out. One of them popped in the other day to say hello.
He said his dad reads this diary everyday, but doesn't believe I'm actually on board the ship typing away.
So to prove it, hello to Mr Knight, from your son Jonathan.
Oh, and while I'm on to you, tell him to clean up his cabin. It's a disgrace.