"' Celestial navigation "', also known as "'astronavigation "', is the ancient science of position fixing that enables a navigator to transition through a space without having to rely on estimated calculations, or dead reckoning, to know their position.
12.
By the time of " Future Echoes " ( 1988 ), Rimmer claims to have taken the " astronavigation exam " without passing nine times, or " [ t ] en, if you count the time [ he ] had [ his ] spasm . " He also claims in this episode that his father had said, " Shiny clean boots and a spanking short haircut, and you can cope with anything, " right before " that unfortunate suicide business ".