Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
1.3 Plan evasion track 
1.3.1 Record input 
data 
• Set track 
• Position of own ship 
• Planned evasion manoeuvre 
• Hydrographic/geogr. situation 
• Necessary input information for planning the evasion 
track 
1.3.2 Evaluate data 
• Result information from 1.3.1 
• Way point list with the phases: 
• leaving the set track 
• execution of the evasion manoeuvre/ clarification 
of the situation 
• steering onto the set track 
• Set values for course/speeds for the individual sec 
tions of the evasion track 
1.3.3 Provide infor 
mation 
• Result information from 1.3.2 
• Provision of the planned evasion track for further use 
in the system 
2. Monitoring and follow 
ing evasion track 
2.1 Follow evasion track 
2.1.1 Record infor 
mation 
• Deviation between planned evasion 
track (set course and speed) and 
present values of ship 
• Distance of present ship position 
from planned evasion track 
• Necessary input data for following the evasion track 
2.1.2 Assess infor 
mation 
• Result information from 2.1.1 
• Necessary actions (set values for course/rudder 
angle and speed) in order to follow evasion track 
2.1.3 Act 
• Set course/rudder angle 
• Set speed/ 
speed regulator position 
• Necessary change in course/speed of ship to adhere 
to planned evasion track 
2.2 Monitor evasion track 
2.2.1 Record set and 
actual value 
• Planned evasion track, set values 
for course or speed 
• State variables of ship: position, 
course, heading, speed 
• Necessary input information to determine set/actual 
deviation is recorded 
2.2.2 Compare set 
and actual value 
• Result information from 2.2.1 
• Distance of ship from planned evasion track 
• Set/actual difference for course 
• Set/actual difference for speed