NMEA-0183 message: ROT
Applicable receivers: All receivers
Rate and direction of turn
NOTE – The heading computation in this message is derived from consecutive positions. For heading using a moving baseline system, see NMEA-0183 message: PTNL,AVR.
An example of the ROT string is:
$GPROT,35.6,A*4E
                    
ROT message fields
| 
                                     Field  | 
                                
                                     Meaning  | 
                            
|---|---|
| 
                                     0  | 
                                
                                     Message ID $GPROT  | 
                            
| 
                                     1  | 
                                
                                     Rate of turn, degrees/minutes, “–” indicates bow turns to port  | 
                            
| 
                                     2  | 
                                
                                     A: Valid data
  | 
                            
| 
                                     3  | 
                                
                                     The checksum data, always begins with *  |