Onwa Marine Electronics KS-200A - Manual (Page 7)

3
The following table shows the mandatory repetition rate of class A
transmissions linked to the ship`s movement:
anchored vessels 3 minutes
vessels at 0 14 kn 10 seconds
vessels at 0 14 kn, fast maneuver 3.3 seconds
vessels at 14 23 kn 6 seconds
vessels at 14 23 kn, fast maneuver 2 seconds
vessels at > 23kn 2 seconds
vessels at > 23 kn, fast maneuver 2 seconds
Static information as well as information belonging to the journey is
dispersed every 6 minutes.
The reporting intervals correspond to both radio channels (161.975 MHz,
162.025 MHz) together.
C
2.2 Class B
lass B: EN62287, 2005:
class B operation is described in the standard EN62287, published in
2005. This document is obligatory for class B.
Class B units are designed for fitting in vessels which do not fall into
the mandatory Class A fit category.
The KS-200A is a Class B AIS unit
Reporting intervals are:
Dynamic ship data:
boats at < 2 kn: 3 minutes
boats at > 2 kn: 30 seconds
Static ship data (similar to class A): 6 minutes
These intervals are the standard operation modes. Competent authorities,
like base stations, can have influence on the reporting intervals (as they
do with class A as well). Interval timing can be reduced down to 5
seconds in exceptional cases. There is no automatism to change the
30sec/3min dynamic intervals by the ship itself.