Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
2.2.3 Assess com 
parison 
• Result information from 2.2.2 
• Decision whether evasion track can be reached 
2.2.4 Provide result 
of comparison 
• Result information from 2.2.1 
• Result information from 2.2.2 
• Set/actual deviations are available for further use 
2.3 Monitor effectiveness 
of manoeuvre 
2.3.1 Record set and 
actual situation 
• Planned evasion track/pianned 
manoeuvre 
• Estimated movements/ manoeuvre 
of other vessels 
• Geographical/hydrographic bound 
ary conditions 
• Present state variables of own ship: 
position, course, heading, speed 
• Present positions and movements 
of the foreign ships recorded 
• Necessary input information to assess effectiveness 
of executed manoeuvre is available 
2.3.2 Compare set 
and actual situation 
• Result information from 2.3.1 
• Assessment whether executed manoeuvre clarifies 
encounter situation 
• Assessment whether manoeuvre leads to hazardous 
situations with other vessels 
• Assessment whether manoeuvre leads to other 
hazards (eg grounding, collision with solid objects, 
etc) 
2.3.3 Assess com 
parison 
• Result information from 2.3.2 
• Identification of possible hazards as a result of the 
executed manoeuvre 
• Decision whether manoeuvre must be modified 
2.3.4 Provide result 
of comparison 
• Result information from 2.3.3 
• Result of comparison is available for further use in 
the system