Functionality level 1 
Functionality level 2 
Function 
Input information 
Output information 
2.1.4 Provide result 
• Output information from 2.1.2 
• Output information from 2.1.3 
• Output of set/actual deviations for the user 
• Provision of deviations for use by other function 
alities 
2.2 Monitoring of CTW 
2.2.1 Record set and ac 
tual values 
• Actual value for course through 
water 
• Set value for course through 
water 
• Necessary input Information is available 
2.2.2 Compare data 
• Output information from 2.2.1 
• Difference between set and actual course 
through water 
2.2.3 Assess comparison 
• Output Information from 2.2.2 
• Limit value for deviation 
• Statement whether set/actual deviation Is within 
the limits 
2.2.4 Provide result 
• Output information from 2.2.2 
• Output information from 2.2.3 
• Output of set/actual deviations for the user 
• Provision of deviations for use by other function 
alities 
2.3 Monitoring of COG 
2.3.1 Record set and ac 
tual values 
• Actual value for course made 
good 
• Set value for course made good 
• Necessary input information is available 
2.3.2 Compare data 
• Output information from 2.3.1 
• Difference between set and actual course made 
good 
2.3.3 Assess comparison 
• Output information from 2.3.2 
• Limit value for deviation 
• Statement whether set/actual deviation is within 
the limits 
2.3.4 Provide result 
• Output information from 2.3.2 
• Output information from 2.3.3 
• Output of set/actual deviations for the user 
• Provision of deviations for use by other function 
alities 
3. Speed monitoring 
3.1 Monitoring of STW 
3.1.1 Record set and ac 
tual values 
• Actual value for speed through 
water 
• Set value for speed through 
water 
• Necessary input information is available 
3.1.2 Compare data 
• Output Information from 3.1.1 
• Difference between set and actual value