Recreational Boating and Marina Networks

Marine environments are ideal for LoRa mesh propagation - water has near-zero signal attenuation, low horizon clutter, and antenna elevation on a mast provides exceptional range. A modest 6 dBi antenna at 10m above waterline can achieve 20-40 km range to similarly-equipped vessels.

Marina-to-Vessel Communications

Marina operators have adopted mesh networking for dock communications where VHF radio is too public and cellular is unreliable when boats are in covered slips or channels.

• Slip status boards - Sensor nodes on dock pedestals reporting power usage or water connections
• Fuel dock coordination - Fuel dock attendant to harbormaster messaging without shouting or VHF
• Guest notification - Message guests in slips about marina events or maintenance shutdowns
• Pump-out requests - Environmental dock coordination

Vessel-to-Vessel Applications

Cruising fleets, sailing clubs, and buddy-boat passages use mesh for fleet coordination:

• Buddy boat position sharing - Real-time GPS position of all fleet vessels on a shared map, without AIS equipment costs
• Anchorage coordination - Communicate with other vessels in an anchorage when cell service is absent
• Race committee communications - Start line to mark boats without dedicated radio infrastructure
• Float plan check-ins - Automated position broadcasts allow shore-based contacts to verify safe progress

Antenna Installation on Vessels

Marine mesh antenna installation differs from land installations:

• Masthead mount - Ideal for sailboats: 15-20m height, 360-degree view, potentially 30-50 km range in open water. Use marine-grade stainless mounts and UV-stable cable ties. Route coax inside the mast where possible.
• T-top or hard top - Powerboats typically mount antennas on T-tops at 3-4m height; still provides 10-15 km range over calm water.
• Pushpit or stern rail - Lower but easy to access; use vertical polarization and ensure clear view forward and aft.
• Connector weatherproofing - Marine environment is extremely corrosive. Use only marine-rated N-type or sealed SMA connectors; apply self-amalgamating tape over all outdoor connections; inspect annually.

Integration with Existing Marine Electronics

Meshtastic's serial interface can be integrated with NMEA 0183 networks on boats, allowing the node to report GPS position from the boat's chartplotter GPS rather than relying on a separate GPS module. This keeps position data synchronized with the boat's navigation system.