Instrument Make and Model: 
S/N: 
Calibration Date: N/A
Installation:
DD: 20130506

RAW datafile:
NAV 2013/05/05 23:00:01.441 SPD VDVBW,000.19,000.52,A,000.19,000.52,V
$

dsLog time stamp:
NAV 2013/01/15 20:28:49.488 SPD 

NAV                 Navigation
2013/01/15          date in gmt
20:28:49.488        time in gmt
SPD                 data collected using Furuno
data                $VDVBW,009.43,000.20,A,009.32,000.34,V*57



$VDVBW,009.43,000.20,A,009.32,000.34,A,000.20,V,000.34,V*57

Data Parsed:
$VDVBW		Sentence Identifier 		Speed Through Water and Speed Over Ground 	
009.43		Longitudinal Water Speed 	Speed Ahead, through water "-" means astern 	
000.20		Transverse Water Speed 		Speed to Starboard, through water "-" means port 	
A		Water Data Status 		A = Valid, V = Void 					
009.32		Longitudinal Ground Speed 	Speed Ahead, over ground "-" means astern 	
000.34		Transverse Ground Speed 	Speed to Starboard, over ground "-" means port 	
*57         	2-byte XOR sum of data to check for transmission errors