9.5.1 Traffic separation schemes and other routeing measures
The existence of special provisions applying to particular measures
should be mentioned on the charts affected, if necessary referring mariners to the full
text in "sailing directions".
9.5.2 Deep-water routes
Where maintenance of a minimum depth can be guaranteed, the least depth
(e.g. 22 m) may be given after the abbreviation "DW". In other cases charted
soundings will indicate the least depth, preferably in conjunction with a note giving the
date of the latest survey.
9.5.3 Areas to be avoided
Notes on conditions governing avoidance of areas (classes and sizes of
ships, nature of cargoes, etc.) should preferably be given on charts and should always be
given in "sailing directions".
