Window to the end of the era of maintaining a stiff upper lip in accordance with naval tradition, offset against 70s hair & moustaches, fashion. B-C grade plots & acting (so still ahead of most modern tv). If you grew up with and enjoy that era it's good watching, if not stay away.
I love this show. I was put onto it when my grandad who served in the Navy told me about his old ship that was used for the show. Any oldie but a goodie