Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
5.3.2 Compare data and 
criteria 
• Result information from 5.3.1 
• Difference between clearance heights and overall 
height of ship for the selected track 
5.3.3 Assess result of com 
parison 
• Result information from 5.3.2 
• Statement whether the expected clearance heights 
are permissible 
• Representation of “critical areas”, stating cause 
5.3.4 Provide result of com 
parison 
• Result information from 5.3.3 
• Provision of determined critical areas and their 
causes for revision of the original track data