In the Nathantia description it says,
"An Engineer confused a mathematical operator(Nott sure what this means?) ..."
I'm assuming this is a translated description from somewhere. A mathematical operator refers to things like multiply, divide, add, subtract (among others). It sounds like the author may have misunderstood the meaning of the sentence as a ship engineer confusing a person who operates math, rather than an engineer who used the wrong operator in an equation.