3.4.1 All doors provided for passenger use leading
from passenger spaces to open decks or to alleyways used as escape
routes must be clearly indicated with a sign marked with the relevant
“exit" sign. Where possible one sign should be over the door
but where the door is not readily visible from within the space it
serves, a further sign should be provided to indicate the direction
in which the door lies.
3.4.2 Doors, windows, side scuttles and other
openings that are not normally used as thoroughfares, but which could
be used for emergency escape purposes, should be clearly marked with
the relevant “emergency exit" sign.