Don't look down. Look up. That's been a navigation standard for years. Funnily enough replaced by GPS. https://airandspace.si.edu/collection-objects/astro-track

Don't look down. Look up. That's been a navigation standard for years. Funnily enough replaced by GPS. https://airandspace.si.edu/collection-objects/astro-tracker-md-1-b-52/nasm_A20110297000 https://airandspace.si.edu/collection-objects/astro-tracker-... That doesn't really work in a sub though. Also compasses (especially of the 3D variety) can be a great help.