What is the role of a gateway in integrating NMEA 2000 with other networks?

• A. A gateway reduces bus speed.
• B. A gateway is used to illuminate the cabin.
• C. A gateway converts PGN into hashtags.
• D. A gateway translates and forwards data between NMEA 2000 and other networks, enabling cross-network data sharing.

Answer: (D)

A gateway acts as a bridge between NMEA 2000 and other networks by translating PGNs and forwarding data between them, enabling cross-network data sharing. It takes the PGN messages from NMEA 2000, converts them into the format understood by the other network (such as NMEA 0183 or Ethernet-based protocols), and routes the relevant information to compatible devices. This lets instruments and displays from different vendors communicate and share data like position, depth, speed, and wind. The other options don’t describe this bridging role: a gateway doesn’t reduce bus speed, illuminate the cabin, or convert PGNs into hashtags.