7.3.3 
Object recording 
Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
1. Receipt of relative object 
data 
1.1 Identify object 
1.1.1 Record data 
• Visual observation 
• Information from sea chart/sea 
handbooks 
• Radar information 
• Radio information 
• Necessary input information for identifying 
observed object 
1.1.2 Evaluate data 
• Output information from 1.1.1 
• Identified object (type and recognition) 
1.1.3 Provide information 
• Output information from 1.1.2 
* Provision of object type and recognition for 
further use in the system 
1.2 Determine object posi 
tion 
1.2.1 Record data 
• Type and recognition of the 
observed object 
• Visual observation 
• Radar information 
• Radio information 
• Information from sea chart/sea 
handbooks 
• Input information for determining position, 
bearing and dimension 
1.2.2 Evaluate data 
• Output information from 1.2.1 
• Position, bearing and dimension (in the case of 
“surfaces" and “line objects”) 
1.2.3 Provide information 
• Output information from 1.2.2 
• Provision of information for further use in the 
system 
1.3 Determine movement 
data 
1.3.1 Record data 
• Relative speed or course of 
observed object 
• Absolute speed or course of 
own ship 
• Necessary input information for determining the 
absolute/relative movement variables (speeds 
and courses) of the observed object 
1.3.2 Evaluate data 
• Output information from 1.3.1 
• Absolute course and speed of the object 
• Relative course/speed of the object 
1.3.3 Provide information 
• Output information from 1.3.2 
• Provision of movement variables for further 
processing