14.1 This message provides a text description in combination with other AIS Application-Specific Message.
14.2 This message can be broadcast or addressed, but must be the same as the main message that it is linked to.
14.3 The Message Linkage ID is used to link the Text Description message to another AIS Application-Specific Message (e.g., Area Notice or Route Information). The same source MMSI must be used to send both the main message and Text Description message.
14.4 Up to 5-slot messages can be created, however messages greater than 3 slots should be avoided.