3.1 The PSCO may determine if the key crew members
are able to communicate with each other, and with passengers as appropriate,
in such a way that the safe operation of the ship is not impaired,
especially in emergency situations.
3.2 The PSCO may ask the master which languages
are used as the working languages and may verify whether the language
has been recorded in the logbook.
3.3 The PSCO may ensure that the key crew members
are able to understand each other during the inspection or drills.
The crew members assigned to assist passengers should be able to give
the necessary information to the passengers in case of an emergency.