Rule 34 is about manoeuvring and warning signals, using whistle or lights. These are the sound signal that rule 9 was refering to. Rule 35 regulates sound signals to be used in restricted visibility.
Rule 34 is about manoeuvring and warning signals, using whistle or lights. These are the sound signal that rule 9 was refering to. Rule 35 regulates sound signals to be used in restricted visibility.