Use Speedify to Combine Starlink with Cellular and Satellite at Sea

Speedify Combines Starlink with Wi-Fi, 4G/5G Cellular, Ethernet, Satellite and Other Starlink Dishes for More Reliable Internet at Sea

Yes, you can combine Starlink with other internet connections at sea. Speedify is an app that uses Starlink Maritime, 4G/5G cellular, a second Starlink dish and older satellite internet at the same time, as one internet connection for the whole vessel.

One Starlink dish is enough for many boats in good weather. Larger vessels, and operations that can’t go offline, need a second internet connection. When one drops, Speedify keeps the vessel online over the others. Here is how ferries and other boats stay online on Starlink.

Speedify keeps you online when Starlink drops, wherever you are

PRIMARY BACKUP STARLINK CARRYING 4G/5G CELLULAR ALSO CARRYING OBSTRUCTED OR DOWN STARLINK GOES QUIET CELLULAR TAKES THE LOAD SPEEDIFY SWITCHES YOU STAY ONLINE ON THE WATER, ON THE ROAD, OFF GRID
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How Speedify's channel bonding technology works on any hardware

Walk through the protocol, the per-packet distribution model, the failover logic, and the encryption layer in one detailed explainer. The architecture and the engineering tradeoffs that make Speedify different from a load-balancer or a regular VPN.

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Speedify offers three commercial paths. They're not exclusive — most enterprise customers combine two or more.

01

Speedify Teams

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02

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Build channel bonding into your own product. For OEMs, software vendors, and hardware manufacturers shipping connectivity as a feature of their own product line.

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Build it yourself with the Speedify SDK.

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Which Internet Connections You Can Combine with Starlink on a Vessel

Starlink Maritime is Starlink’s internet service for ships. For many smaller vessels and coastal operations, one Starlink dish is enough in good conditions. Bad weather, a rolling ship, and the short drops when a Starlink dish switches satellites (about every 15 seconds) still interrupt it, and on a large vessel many people share the same Starlink internet connection.

Speedify can use any of these alongside Starlink:

  • 4G/5G cellular near the coast or in port, through a USB cellular modem or a marine cellular antenna
  • A second Starlink dish on the same vessel
  • Older satellite internet for ships, kept as a backup on routes where Starlink coverage is weak
  • Marina or shore Wi-Fi when the vessel is docked

How Speedify Combines Several Internet Connections on a Vessel

Speedify runs on a router or computer on board and watches every internet connection all the time: its speed, its delay and how much data it loses. When several internet connections are working, Speedify sends traffic over all of them at once, so you get more speed than any one of them alone. See how Speedify combines internet connections.

When one internet connection weakens or drops, Speedify moves its traffic to the others on its own. Ship-to-shore calls, crew video calls and passenger internet keep going, with nothing to reconnect.

Speedify also encrypts all internet traffic on every internet connection, which protects operational data and crew communications at sea.

How to Combine Starlink with Other Internet Connections on Your Vessel

Step 1: List Every Internet Connection Your Vessel Can Use

A common setup is one Starlink Maritime dish plus one more internet connection: a 4G/5G cellular antenna, a second Starlink dish or an older satellite service.

Step 2: Connect Each Internet Connection to the Onboard Router

Connect each internet connection to the router or server that will run Speedify, so each one shows up as its own network connection. On larger vessels, Speedify can run on a dedicated router or server in the ship’s network rack. See the routers Speedify supports.

Step 3: Download and Run Speedify

Download Speedify and install it on the router or computer that runs the vessel’s internet. Speedify finds every internet connection and starts using them right away, with no routing to set up.

Which Vessels Get the Most from Combining Starlink with Other Internet Connections

  • Commercial vessel operators who need steady internet for navigation, reporting and ship-to-shore communication
  • Ferry and cruise operators giving internet to hundreds of passengers and crew on one voyage
  • Fishing and fish farming operations running monitoring systems that can’t miss data
  • Offshore platforms and support vessels that need internet for crew calls home and daily business
  • Yacht owners and crews who want Starlink Maritime plus cellular or a second satellite service

Speedify Is Used on Millions of Devices Worldwide

Speedify has powered stronger Internet for millions of consumers since 2014

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Millions of Speedify downloads worldwide, and growing every day

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More than 75,000 5-star reviews for Speedify in the iOS and Android app stores

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Points of Speedify presence in datacenters around the globe

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Hundreds of terabytes of fast, secure data streamed every week via Speedify

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Speedify Also Shows the Status of Every Starlink Dish on Board

Speedify shows real-time Starlink dish alerts for each connected Starlink dish in the app. If a Starlink dish has a problem, such as overheating, Speedify shows an alert once the problem has lasted 15 seconds, and clears it when it’s fixed.

For vessel operators running several Starlink dishes, the Starlink Control Center in Speedify shows the status, speed and alerts of all of them in one place.

Speedify Business Solutions

Speedify Teams

Get faster uploads and downloads and a more reliable internet connection for all the people and devices in your business.

Speedify for Routers

Power your OpenWRT, GL.iNET, or Miri router with Speedify and combine Wi-Fi, Ethernet, 4G, 5G, Starlink and other satellite internet connections together.

Speedify Embedded Solutions and Integrations

Embed Speedify software into your app or hardware products and leverage the core channel bonding technology of Speedify in new and interesting ways.