The Marine Data MD71MFD is a versatile, compact digital multi-function NMEA navigation display manufactured in the United Kingdom by Marine Data Systems. Housed in a standard 96×96 mm DIN panel chassis, the MD71MFD is designed for flexible installation across vessel wheelhouse consoles, overhead panels, chart tables, and auxiliary steering stations.

Equipped with a high-contrast, sunlight-readable graphical LCD screen, the MD71MFD can be configured to display a wide range of vessel data feeds transmitted via standard NMEA 0183 serial protocol. Displayable parameters include digital heading (gyro, satellite, or magnetic), rate of turn (ROT), rudder angle, speed through water (STW), speed over ground (SOG), water depth, and wind speed/direction. High-resolution red backlight dimming guarantees glare-free operations during nocturnal bridge watchkeeping.

Key Features:
• Multi-Parameter NMEA Display: Configurable screen modes present heading, rate of turn, rudder angle, speed, depth, wind, and position data.
• High-Contrast LCD Screen: Clear graphical presentation with wide viewing angles and crisp digital readouts.
• Universal NMEA 0183 Interfacing: Decodes multiple standard serial NMEA 0183 data sentences ($HDT, $THS, $ROT, $RSA, $VTW, $VTG, $DPT, $MWV) with auto-sensing baud rates.
• Variable Red Night Illumination: Dimmable red backlight controlled via front panel buttons or remote NMEA serial commands for night vision compliance.
• Compact DIN Footprint: Standard 96 x 96 mm DIN panel dimensions enable seamless flush mounting into crowded bridge consoles and instrument banks.