System Functions
(a) The system complies with
DP class 2
(b) The system’s compliance
with DP class 2 is un-
known
(c) The system is not comply-
ing with DP class 2
Figure 10.100: DP Class 2 Indication in the “System Monitor” Window
Grey
color means that the compliance with DP class 2 is unknown:
– vessel’s control is performed from the bridge (
NAVIS NavDP 4000
is inactive) or DP Class 2 monitor
function is turned off by the operator. In this case all item indicators in the table are grey-colored;
– Consequence analysis function is inactive (“Conseq” indicator is grey-colored). However, state indi-
cators for sensors, ref-systems and hardware must be green-colored.
Red
color means that
– the system configuration is not complying with DP class 2 by some criteria (there is one or more red
indicator in the table);
– PMS function is turned off by the operator (for more detailed information see Section 6.4, page 118).
In case the system configuration is not complying with DP class 2, the Alarm message is generated: “Set
configuration isn’t complying to DP class 2”.
Ref-sys state.
Possible colors are: green and red.
Green
color shows that
– quantity of ref-systems complies with the particular Classification Society requirements for DP sys-
tems class 2 (see Table 10.1);
– at least two ref-systems are based on different physical principles;
– ref-systems operate normally (data are used by the system).
Red
color shows that quantity and/or state of the ref-systems do not comply with DP class 2.
Requirements of different classification societies to the minimum number of ref-systems for DP class 2 are
specified in the table 10.1.
Sensors state.
Possible colors are: green and red.
Green
color shows that
– quantity of sensors complies with the particular Classification Society requirements for DP systems
class 2 (see Table 10.1);
– sensors operate normally (data are used by the system).
Red
color shows that quantity and/or state of the sensors do not comply with DP class 2.
Requirements of different classification societies to the minimum number of sensors for DP class 2 are speci-
fied in the table 10.1.
Hardware state.
Possible colors are: green and red.
Green
color shows that
– system configuration complies with DP class 2 (see Table 10.2);
– hardware components operate normally.
Red
color shows that quantity and/or state of the hardware components do not comply with DP class 2.
Minimum required quantity of Hardware components for DP class 2 is specified in the Table 10.2.
Consequence analysis state.
Possible colors are: green, grey and red.
Green
color shows that the Consequence analysis function is active and the analysis process is running;
Grey
color shows that
– the Consequence analysis function is inactive;
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