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Essential guide to getting internet at sea

Chloe Twist

27 March 2025

Essential guide to getting internet at sea

In today’s world, staying connected is more important than ever, even when you’re out at sea. Whether you’re working remotely, streaming your favourite shows, or staying in touch with family and friends, having reliable boat Wi-Fi can make a big difference to your sailing adventure. 

But getting wireless internet for boats isn’t always straightforward. Let’s explore your options and find the best solution for your needs.

 

Understanding the challenges of internet access at sea

Getting internet at sea isn’t as simple as plugging in a router and hitting the waves. There are several challenges to think about:

  • distance from shore: the further you travel from the shore, the harder it becomes to keep a reliable connection. Most standard internet services rely on land-based infrastructure, which has limited reach
    weather conditions: rough seas, storms, and heavy cloud cover can interfere with certain types of internet connections, especially satellite-based servicessignal interference: other vessels, high-rise buildings, and even your own boat’s materials can affect signal strength, making it necessary to have the right equipment to boost your connectivity
  • regulations and licensing: in the UK, certain radio frequencies and satellite usage may be subject to licensing requirements, especially for long-range communications

Now that we understand the challenges let’s look at the best ways to get Wi-Fi for yachts and boats.

Related: Guide to the different yacht types

 

Different methods of getting Wi-Fi on your boat

There are several ways to set up wireless internet for boats, depending on your location, budget, and needs. Below, we’ll look at the pros and cons of each method and help you decide the best option for your vessel.

 

1. Land-based Wi-Fi connections

One of the easiest and most affordable ways to access boat Wi-Fi is by connecting to existing land-based networks at marinas, ports, and coastal areas.

Pros:

  • often free or low-cost when docked at a marina
  • no additional monthly fees if using an existing connection
  • simple setup with a Wi-Fi booster or range extender

Cons:

  • only works near the shore
  • signal strength varies depending on location and obstacles
  • speed and reliability depend on marina infrastructure

 Installation and suitability:

  • a Wi-Fi booster or range extender can significantly improve connectivity
  • this option is ideal if you spend most of your time at marinas or near the coast
  • popular UK marinas such as Brighton Marina and Lymington Yacht Haven offer free or premium Wi-Fi options

 

2. Cellular data connections

Using mobile data is a popular option for getting Wi-Fi for yachts and smaller boats, as mobile networks provide good coverage near the shore.

Pros:

  • affordable and widely available in coastal areas
  • works anywhere with mobile network coverage
  • portable Wi-Fi hotspots make setup easy

Cons:

  • limited range and coverage drops significantly the further you go from shore
  • data caps and roaming charges can be expensive
  • speeds depend on local network congestion

Installation and suitability:

  • a portable Wi-Fi hotspot or SIM-enabled router can have a stable connection
  • this method is best if you stay within a few miles of the coast and have access to good mobile coverage
  • UK providers such as EE, Vodafone, and Three offer marine-friendly data plans with roaming options for international cruising

 

3. Satellite internet

For anyone venturing far from shore, satellite internet is the best option for staying connected out at sea.

Pros:

  • works anywhere, even in remote offshore locations
  • reliable connection in deep-sea environments
  • doesn’t need land-based networks

Cons:

  • expensive initial setup and monthly fees
  • needs a clear view of the sky for best performance
  • can have a delay (latency), affecting video calls and gaming

Installation and suitability:

  • needs a satellite dish mounted on your boat, which connects to a satellite internet provider
  • best for long-distance cruisers, offshore workers, and sailors who need reliable internet at sea

 

Popular satellite internet providers in the UK:

  • Starlink maritime—offers high-speed connectivity with lower latency than traditional satellite services.o
  • Inmarsat—UK-based provider with excellent global coverage, especially for commercial vessels
  • Iridium—provides lower-speed but highly reliable service for emergency communications
  • OneWeb—newer provider focusing on maritime connectivity, with growing UK availability

Related: Tips for keeping your boat safe in a storm

 

FAQs

Can you get internet while at sea?

Yes—you can get marina Wi-Fi, cellular data, and satellite internet, depending on how far from shore you are.

 

Can I use my mobile data at sea?

Yes, but only near coastal areas where there is mobile coverage. Using a marine-specific SIM card or data plan can help you get the best performance. UK-based sailors can benefit from roaming plans that cover European waters.

 

How does Wi-Fi work at sea?

Wi-Fi on a boat functions the same as on land but relies on different sources such as marina networks, mobile data, or satellite connections.

 

What is the best way to get Wi-Fi on a boat?

The best method depends on your needs:

  • near the shore—a Wi-Fi booster or cellular hotspot works well.
  • going offshore—satellite internet is the best option.

 

Can you put a Wi-Fi router on a boat?

Yes, a marine-grade router can help you get connected from different sources, like mobile data and satellite internet.

 

How much does boat Wi-Fi cost in the UK?

  • marina Wi-Fi—often free, but premium services range from £5-£20/month.
  • mobile data plans—typically £10-£60/month, depending on data limits.
  • satellite internet—setup costs start from £2,000, with monthly fees from £100-£500+.

 

Surf the sea and the web

Getting Wi-Fi for yachts and boats means choosing the right option to suit your needs. Whether you rely on marina Wi-Fi, mobile data, or satellite internet, there’s a way to stay connected while at sea. Investing in the right equipment means that you can enjoy seamless internet access, no matter where your adventures take you.

 

Specialist boat insurance through Craftinsure

Alongside getting internet at sea to enhance your boating experience, you may want to protect your vessel with specialist insurance.

At Craftinsure, we arrange specialist boat insurance that covers a range of boat types, including cruising yachts, racing yachts, dinghies, motor boats and more. 

You can get an instant online quote today.

Get a quick quote for Boat Insurance

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