Satellite phones and satellite trackers have transformed long-distance sailing, with the ability to download accurate weather forecasts, call anyone in the world and track positions across an ocean hour by hour. We guide you to find the best satellite phone or tracker for communication at sea.

The best satellite phone for you is the one that does the job you need it to do. If you are looking to make calls, send and receive texts, drop bread crumbs for passage tracking and download a daily weather file, then these satellite phones or satellite tracking devices could be just the ticket. You can keep one of these in your grab bag too, along with an EPIRB for extra security in case of emergency.

The ubiquitous Iridium 9555 can be seen on many boats who need to equip themselves with the bare minimum of satellite communications to meet an offshore event mandatory requirements. They sell well on the second hand market too. I have used one of these phones to call out my own mayday after a dismasting in the Atlantic and its simplicity and portability was a huge win for me. You don’t always need to spend the most to get what you need.

But bear in mind, if you are looking to fire back photos and videos to your Instagram and YouTube channels, then beware of your satellite communication choices. Only the Iridium Go Exec is suitable for any kind of data use. The others in this guide are more for basic voice and text communication.  Don’t be mis-sold a cheap satellite phone in the vane hope that you will still be able to upload and download data rich content. No matter how much data you buy, they’re still incredibly slow. In most cases too slow to actually upload/download anything more meaningful than a weather grib file.

Iridium GO! Exec Satellite WiFi Hotspot

A game changer just arrived on the market in early 2023 as the much anticipated Iridum Go Exec or as some of us call it the Iridium Go 2.
This is a stand alone unit with the capability to make calls straight away using it as a speaker phone. So the unit you see in the picture works as a phone and you can make calls. The battery is rechargeable via USB C.

Using the Certus 100 system though gives so much more capability to do other things with this when hooked up to your smart phone. So if you have an android or Apple phone, you can make calls through that or you can download weather files, send whatsapp messages and all the fun stuff like that.

This unit will be coming with an optional plug in external aerial too so you can make this your fixed ship unit, or for those delivery skippers out there, you can take this in your luggage and hop from boat with a data functional satellite phone.
A genius bit of kit and at a very competitive price for this end of the market.

We have a full hands on review of this unit coming soon.

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Iridium 9555 Satellite Phone & SIM Card With 75 Minutes For 30 Days

9555 iridium satellite phone

This handset comes with a prepaid SIM card and 75 minutes for 30 days validity (note you must activate the SIM card within 6 months of purchase).

Industrial-grade design for durability. Compact physical footprint means it will slip easily into a grab bag or large jacket pocket.

Enhanced SMS and email messaging capability. It comes with a phone cover and a hands free wired headset in the box.

Price £1215 (Price £1016 phone only)

Buy Iridium 9555 satellite phone with airtime from Global Telesat Communications via

Buy Iridium 9555 satellite phone only from Global Telesat Communications via

Iridium 9575 Extreme Satellite Phone with a Prepaid SIM card (No Airtime Included)

iridium 9575 extreme satellite phone

The Iridium 9575 Extreme is SMS and email enabled. SMS and email messaging is limited to 160 characters and delivery/receipt is dependent on compatibility with local mobile network carriers

The phone has an integrated speakerphone and hands-free capability through a headset included as standard in the box.

It is the only satellite phone currently available with emergency services supported by GEOS International Emergency Response Coordinating Centre and is included at no additional cost.

Equipped with Location Based Services (LBS) enabling GPS positioning. 

Ruggedised to a IP65 rating, the highest of any satellite phone currently available. It is jet water resistant, shock resistant, dust proof and has a rugged antenna.

Price: £1,230 / $1,150

Buy Iridium 9575 Extreme from Global Telesat Communications via

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Iridium GO

iridium go

The Iridium GO! is a pocket sized device, with an IP rating of IP65, that enables you to use your smartphone or tablet to make voice calls, share photos, access emails, SMS two-way, use GPS tracking and send out SOS alerts.

Simply flip up the integrated antenna and the battery-powered unit will connect quickly and automatically to the Iridium LEO satellite constellation. You can then connect and operate up to 5 devices at a time using the Iridium GO! app.

You will need to purchase airtime for a prepaid SIM, or enter into a monthly contract for the post-paid SIM before you can use your device.


Price: £799 / $695

Buy Iridum Go from Global Telesat Communications via

Buy Iridium Go with 400 mins and 180 days sim card from Global Telesat Communications via

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Inmarsat IsatPhone 2 with SIM Card and 50 Airtime Units

inmarsat phone 2

Inmarsat is another big name in satellite communications, and their IsatPhone 2 has good reviews. Inmarsat offers near-global coverage, and the phone has around 8 hours’ talk time, an integral GPS sensor, and is IP54 water- and dust-resistant.

It has an SOS button for emergency use. Reviews suggest that it’s a good choice if you’re looking for predominantly voice calls – for heavy data use, it’s more cost effective to use one of the company’s impressive FleetBroadband units.

Price £710

Buy Inmarsat Isatphone 2 from GTC via

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Garmin InReach Mini

Garmin Inreach

Ok, so Garmin’s InReach Mini may not strictly be a satellite phone, in that you can’t use it to make phone calls, but it’s a low-cost messenger that allows two-way text messaging.

You can also use it to trigger an SOS call to a 24/7 search and rescue centre, and have a tailored weather forecast delivered for a subscription fee.  Worth considering as a lower-cost alternative if you don’t need voice or data capability.

Price £269

Buy Garmin InReach Mini from Global Telesat Communications via

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Spot Tracker

Spot Tracker

The SPOT X has a 2.7-inch screen with a backlit display which allows you to view message status and add contacts. Also, the satellite tracker is dust and water protected to IP67 standard.

Connect your SPOT X to the SPOT X app via Bluetooth, to access satellite connectivity.

Users can select from 2.5, 5, 10, 30 or 60 minute tracking intervals, to let family, friends and other adventurers follow your progress with SPOT’s Google Maps interface. The check-in button is an important feature. It enables users to quickly and easily let everyone know they’re okay.

The SPOT X has a built-in compass and programmable waypoints to help you navigate whilst on your trip. Additionally, there is an SOS button on the device for emergency situations. Send an S.O.S. to the 24/7 Search & Rescue centre, message back and forth about the nature of your emergency, and receive confirmation when help is on the way.

Price £307

Buy Spot Tracker from GTC via
Buy Spot Tracker from

Thuraya SatSleeve Plus

Thuraya sat sleeve

The SatSleeve is designed to transform your smartphone (Apple or Android) into a satellite phone by clipping to the phone. You get the apps and interface you are familiar with, access to your emails and usual phone numbers through a free SatSleeve App that lets you interface your phone’s address book.

You can choose various access points to give you the level of compression you need and avoid heavy and expensive data use (heavy compression, low or no compression are the options).

Price £529

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Thuraya XT Pro Satellite Phone

thuraya xt pro

Thuraya’s XT Pro is a ruggedised handset that boasts a long battery life, built-in GPS and a large display. Thuraya claims up to 2/3rds global coverage, so it’s important to ensure that your cruising ground or passage area is included – you can check the coverage map at the top of this article.

You can make calls and send SMS from the handset and use the phone as an internet access point. There’s a dedicated SOS button that sends a pre-programmed alert to a preset number, not the GEOS service as used by some other brands.

Price £1020

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Buying the best satellite phone is just the start – you’ll also need a SIM card and data plan. These vary considerably in cost and it’s worth spending some time researching the best options for your type of sailing. MailASail have a useful guide to choosing your usage on their website. Global Telesat Communications also have a comprehensive website with lots of airtime plans available to accompany the satellite equipment you choose to buy.

Questions to ask before buying a satellite phone

  • Where will you be using it?
  • What will you be using the phone for? (voice, text, weather reports, position tracking, sos etc)
  • Do you need waterproofing?
  • How important is battery life?
  • Do you need internal GPS?
  • Do you want to send photos and videos to social media or to a personal blog or website?
  • Do you want a portable satellite phone to keep in a grab bag?
  • Will you want to take it with you on to other boats?
  • What airtime plan will suit you?

Satellite phone global coverage

Global coverage offered by satellite phone providers (maps courtesy of Global Telesat Communications)


iridium global coverage map

  • Iridium 9555
  • Iridium 9575 Extreme
  • Iridium GO
  • Garmin InReach



inmarsat global coverage map

  • ISatphone 2


thuraya coverage map

  • Thuraya Satsleeve
  • Thuraya XT Pro


spot coverage map

Spot Tracker

If you’re looking to read more about satellite comms and trackers

Spot X review at Yachting World

12 yacht trackers compared – Yachting World

Internet at sea – Yachting Monthly

Didn’t find what you’re looking for? Head to Amazon’s dedicated sailing page for more marine products.