It makes absolutely no sense to me. Even without the part after the slash, it's meaningless. "Undocking and docking the ship overtime" is not a sentence. Nor is "Undocking and docking the ship in event".
At a push, I can make a case for "Undocking and docking the ship - overtime" being a heading for a column listing hours of overtime which were spent undertaking those tasks. I don't see how it fits into a repair manual. "In event" still makes no sense.
I don't think this is anything to do with AmE and BrE unfamiliarity with each other's terms. "A weather event" strikes me as one of those unnecessary terms which tells us absolutely nothing. There is always a weather event happening everywhere in the world. Surely it's just weather. If the speaker means "bad weather for the activity being undertaken" then call it "bad weather" or actually specify that it's a storm or thunder or snow etc.
For me, a "weather event' is something notable, such as a hurricane or a blizzard, not a simple rainstorm or snowfall. By way of analogy, a professional football game is a sporting event. A couple of kids throwing a ball in the back yard is not.