As a university student, soon to be Oficer Of The Watch in Merchant Navy i find this show very informative. Better to learn on someone else mistake than to make them yourself and sink a vessel. Sometimes information about ships are simplified to not bore the audience, and that would be only one thing that i disliked about the show, for example in S01E04 Narrator said that the Vessel had ice class, but he didn't specified which ice class was it. But other than that i give the show solid 5/5, you should give it a try even if you are not a maritime enthusiast. It's a shame that there are only 3 seasons of this show.