NMEA0183
$xxVBW (Taker ID “xx” is not checked)
Check-sum is required.
Fore-Aft STW speed is used. The data valid status is checked.
NMEA xxVHW
(speed through the water : STW)
NMEA0183
$xxVHW (Taker ID “xx” is not checked)
Check-sum is required.
The speed data is used. The status of [kt] is checked.
YOKOGAWA VMVSD
(speed through the water : STW)
EML201 format
$VMVSD (The name was changed to YOKOGAWA VMVSD.)
NMEA xxVBW(G)
(speed over the ground : SOG)
NMEA0183
$xxVBW (Taker ID “xx” is not checked)
Check-sum is required.
Fore-Aft SOG speed is used. The data valid status is checked.
NMEA xxVTG
(speed over the ground : SOG)
NMEA0183
$xxVTG (Taker ID “xx” is not checked)
Check-sum is required.
The speed data is used. The status of [kt] is checked.
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