4/5G Systems

Marine 4G & 5G Internet Systems for Boats

Stay connected in coastal waters with high-speed 4G and 5G marine internet systems. Our collection features cellular internet solutions from Glomex and other leading manufacturers:

4G/5G Routers - Marine-grade cellular internet routers with WiFi
External Antennas - High-gain antennas for extended range
WiFi Extenders - Boost marina and coastal WiFi signals
SIM Cards & Data Plans - Connectivity solutions for UK and European waters

Perfect for coastal cruising, liveaboards, and vessels that stay within cellular coverage. Provides reliable internet for email, weather, navigation apps, and streaming.

Complete Connectivity: Part of our Internet collection. Compare with Starlink for offshore coverage or satellite communication for global reach. Combine with satellite TV. Mount with Seaview or Scanstrut platforms.

Antenna position matters more than router

Antenna position generally has a bigger effect on a 4G or 5G system's performance than the router itself. Mounting the external antenna as high as practical, with a clear line of sight towards the coast, extends usable range far more than swapping to a higher-specified router with the antenna left low down in a cockpit locker. Where a boat already carries a WiFi extender for marina WiFi, a cellular router and the extender can generally run alongside each other, giving a fallback between shore WiFi and cellular data depending on which is available.

5G currently gives faster speeds close to shore but with a shorter effective range than 4G, so for most cruising grounds a system that falls back to 4G automatically is more useful than one chasing 5G alone. A SIM with a data plan covering the areas you cruise is a separate decision from the hardware, and UK and EU coverage can differ significantly between providers once you're away from major ports.

Ask us if you'd like help matching an antenna and router combination to your cruising area.