ABSTRACT
It is recommended that information on the number of persons aboard should be passed on demand in the case of the event happening in the form of addressed messages from ship to shore:
– Total number of persons – Number of crew members (for inland AIS) – Number of passengers (for inland AIS) – Number of deck personnel (for inland AIS)
3.6 Information on signal status
Information on signal status is transmitted in the form of shore to ship message:
– Signal location (WGS84) (for inland AIS) – Signal forma (for inland AIS) – Light signal status (for inland AIS)
3.7 EMMA (European Multiservice Meteorological Awareness) warnings
EMMA warnings, information on water level and safety messages are transmitted in the form of shore to ship messages, in the form of addressed or sent messages:
– Location (WGS 84) Local weather warnings (for inland AIS)
– Local information on water levels (for inland AIS)
4 ALTERATION IN INLAND AIS PROTOCOL
As platform for inlandAIS, inland versions of portable class A stations are recommended or class B “SO” stations with the application of SOTDMA techniques. Class B “CS” stations using CSTDMA (Carrier Sense Time Division Multiple Access) techniques, on the other hand, cannot be used, as they do not secure the same effects as class A or “SO” B equipment. “CS” devices do not ensure successful data transmission by radio, nor do they make possible the transmission of messages on the presented technical specifications required for inland AIS. As long as class B “SO” devices are inaccessible, classA versions are applied adapted to the needs of inland shipping, in accordance with IMO SOLAS regulation (IMO
MSC.74(69) Annex 3 “Recommendations on Performance Standards for a Universal ShipborneAutomatic Identification System (AIS)” IMO (International Maritime Organisation) 1998).
