Why is the GPS100 Speed Over Ground (SOG) reading different from the Speed Through Water (STW) reading? (2024)

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Products
Products
User Interface Software
N2KTracker®
N2KView® Mobile
N2KView® Vessel Monitoring and Control Software
Maretron Real Time Cloud Service
Maretron Telemetric Cloud Service
User Interface Hardware
ALM100 – Alarm Module
DSM410 – 4.1″ High Bright Color Display
DSM570 – 5.7″ High Resolution Color Display
E2500 – Wireless-N Router
MBB300C – Vessel Monitoring and Control Black Box
TSM810C – 8″ Vessel Monitoring and Control Touchscreen
NMEA 2000® Gateways & Bridges
IPG100 – Internet Protocol Gateway
J2K100 – J1939 to NMEA 2000® Gateway
NBE100 – Network Bus Extender
USB100 – NMEA 2000® / USB Gateway
N2KAnalyzer® V3 – NMEA 2000® Analysis Software
Tank Monitoring
FPM100 – Fluid Pressure Monitor
TLA100 – Tank Level Adapter
TLM100 – Tank Level Monitor (40″ depth)
TLM150 – Tank Level Monitor (Gasoline/Petrol)
Engine Monitoring
CLM100 – Current Loop Monitor
FFM100 – Fuel Flow Monitor
J2K100 – J1939 to NMEA 2000® Gateway
Electrical Monitoring & Control
See Also
Difference of Speed over Ground (SOG) and Speed through Water (STW) | FleetMon's Vessel Tracking Help Desk 15 Things To Consider While Using Radar On Ships How To Calculate Course Over Ground (Illustrated Guide)What Is a Safe Speed?
ACM100 – Alternating Current Monitor
DCM100 – Direct Current / Battery Monitor
DCR100 – Direct Current Relay Module
RIM100 – Run Indicator Module
Digital Switching - MPower
CBMD12 – 12-Channel Optional Bypass Module
CKM12 – 12-Button Customizable Keypad
CLMD12 – 12-Channel DC Load Controller Module
CLMD16 – 16-Channel DC Load Controller Module
Quick Configuration Packages
VMM6 Series Contura® Digital Switch Module, 6 Rocker
OctoPlex®
AC Power Distribution Units
AC Power Monitor
Battery Monitor
DC Power Distribution Unit
Multi-Function Displays
Network Power Supply
System Interface Unit Monitor
General Systems Monitoring
CLM100 – Current Loop Monitor
FFM100 – Fuel Flow Monitor
FPM100 – Fluid Pressure Monitor
RAA100 – Rudder Angle Adapter
SIM100 – Switch Indicator Module
TMP100 – Temperature Monitor
VDR100 – Vessel Data Recorder
Navigational Instruments
DST110 – Depth / Speed / Temperature Triducer
GPS200 – GPS Antenna / Receiver
SSC300 – Solid State Compass
WSO200 – Ultrasonic Wind and Weather Station
NMEA 2000® Cables and Connectors
Legacy Products
Suggested Systems
Suggested Systems
Sailboat Example Systems
See Also
COG vs Heading
Basic
Intermediate
Comprehensive
Trawler Example Systems
Basic
Intermediate
Comprehensive
Recreational Fishing Yacht System Examples
Basic
Intermediate
Workboat Example Systems
Basic
Intermediate
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Application System Examples
Battery Monitoring
Battery Switch Monitoring and Control
Bilge Monitoring and Control
Digital Switching
Engine Monitoring
Fuel Flow / Economy / Trip Computer
Fuel Filter Monitoring
Generator Monitoring
Indoor Temperature and Humidity Monitoring
Shore Power Monitoring
Security Monitoring
Swing Meter (Rate of Turn)
Tank Monitoring
Telemetric Cloud Service
Vessel Tracking (N2KTracker®)
Product Example Systems
ACM100 - Alternating Current Monitor
DCM100 - Direct Current Monitor
FFM100 - Fluid Flow Monitor
FPM100 - Fluid Pressure Monitor
GPS200 - Antenna/Receiver
J2K100 - J1939 to NMEA 2000 Gateway
NBE100 - Network Bus Extender
RAA100 - Rudder Angle Adapter
SSC300 - Solid State Compass
SMS100 - Text Messaging
TLA100 - Tank Level adapter
TLM150 - Tank Level Monitor
TMP100 - Temperature Monitor
WSO100 - Wind and Weather Station Example Systems
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Why is the GPS100 Speed Over Ground (SOG) reading different from the Speed Through Water (STW) reading? (2024)

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