Maritime cellular
Connects through equipment installed on supported ships, carried back to land by satellite — how cellular at sea actually works.
Check the exact vessel
Cruise & ferry eSIM comparison
Cruise eSIM plans, compared honestly.
The eSIMs for cruise ships that actually work in open water, separated from the cheaper ones built for port days — and priced against the ship’s own Wi-Fi.
G1RRB
Vessel lists checkedAt-sea badges are never assumed
SEA +PORT
● Open water · maritime network
01 — Your trip
At-sea badges follow each provider’s vessel list
Where are you cruising?
✓ Exact ship checks✓ Port-only labels✓ Fair-use limits shown✓ Prices linked to source
Coverage library12 cruise line guides48 port guides59 provider pages10 ferry routes
02 — Know the difference
One cruise. Three connection zones.
A phone can show full bars in Barcelona and nothing the next morning at sea. The network underneath has changed. See the best eSIM for cruise ships — every one that works at sea, ranked by cost per gigabyte, or start with GigSky’s Cruise + Land plans, which cover both zones on one eSIM.
Local mobile data
Regional travel eSIMs connect to terrestrial networks when the port country is included.
Usually the lower-cost optionThe ship’s network
Useful for laptops and multiple devices onboard, but it normally ends when you leave the vessel — do cruise ships have Wi-Fi, and what each line charges per day.
Best for work-heavy trips
The offshore handoverPort network → brief handover → maritime network
Onboard cellular normally activates in international waters, often around 6–12 nautical miles offshore. The boundary varies by vessel and network.
PortLocal network
6–12 nmTypical transition
Open waterSupported ship network
03 — Compare clearly
Plans for your sailing
Live comparison previewSource check: September 2026
At sea onlyBest match
GigSky Cruise & Middle East Unlimited 15-day
Switches between the ship’s maritime network at sea and local networks in port — one eSIM covers both.
DataUnlimited*290+ ships — Royal Caribbean, Carnival, Disney, NCL, Princess, Celebrity, MSC, Holland America
Validity15 daysData-only · hotspot varies
Total price$59.49Check live before buying
View live plan
Works at sea + ports
GigSky Cruise + Americas/Caribbean Unlimited 15-day
Switches between the ship’s maritime network at sea and local networks in port — one eSIM covers both.
DataUnlimited*290+ ships — Royal Caribbean, Carnival, Disney, NCL, Princess, Celebrity, MSC, Holland America
Validity15 daysData-only · hotspot varies
Total price$82.99Check live before buying
View live plan
Ferry
GigSky European Ferries 5GB
Covers the ferry’s onboard network during the crossing.
Data5GBBrittany Ferries, Color Line, DFDS and Stena Line vessels on covered European routes.
Validity1 dayData-only · hotspot varies
Total price$39.99Check live before buying
View live plan
*Prices, vessel lists and fair-use rules can change. Some links may earn us a commission, never a better ranking.
Verified deal desk
Check eligible plans
Take 10% off selected cruise plans.
Apply the code on the provider’s checkout page. We date every code and remove it when it stops working.
04 — Plan before boarding
Two useful tools. No guesswork.
Data plannerEstimate your starting point
Suggested place to start 7GB
Combine maritime coverage with a port plan.
Planning estimate only. Streaming and hotspot use can increase demand.
Device checker
Will your phone take an eSIM?
eSIM compatibleAlso confirm that the phone is network-unlocked.
Open the full checker
05 — Right-size your data
Pack data for how you travel.
Choose a usage profile, then combine sea-day and port coverage only where it adds value.
Suggested setup 5–10GB sea-and-port planPlanning guidance, not a guaranteed data estimate.
06 — Browse by route
Search any itinerary
Popular sailing regions
07 — Port intelligence
Know the network before you step ashore.
Compact guides show the local networks, terminal notes and practical port-day setup for each stop.
BCN
Spain · Mediterranean
Barcelona
Movistar · Orange · Vodafone
MIA
USA · Caribbean gateway
Miami
AT&T · T-Mobile · Verizon
NAS
Bahamas · Caribbean
Nassau
BTC · aliv
ROM
Italy · Rome gateway
Civitavecchia
TIM · Vodafone · WindTre
SOU
UK · Northern Europe
Southampton
EE · O2 · Vodafone
CZM
Mexico · Western Caribbean
Cozumel
Telcel · AT&T
08 — Find your vessel
Every ship is its own coverage check.
A provider covering one ship does not mean it covers the full fleet. Start with your exact vessel — every ship we can name, and what covers each.
Check my ship
01 Royal Caribbean02 Carnival03 MSC Cruises04 Norwegian05 Princess06 Celebrity07 Disney Cruise Line08 Virgin Voyages09 Cunard10 Holland America
09 — Before you sail
Set it up on land. Cruise without surprise charges.
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1
Check your phone
Confirm eSIM support and that the device is network-unlocked.
-
2
Check your exact ship
Coverage is per vessel, not per line — see which ships each provider lists.
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3
Install on reliable Wi‑Fi
Keep the travel line off until the provider says to activate.
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4
Protect your home SIM
Disable roaming and automatic mobile-data switching.
At sea: maritime plans generally need Airplane Mode
off. Follow the provider’s exact settings.
Ferry finder
Short crossing,
Short crossing,
same ship-level check.
Compare vessel-specific coverage for the Channel, North Sea, Baltic and island routes.
Brittany FerriesColor LineDFDSStena LineSelected plans currently shown from $7.99 by GigSky. Check
live.
Read first
All guides
The guides worth reading before you buy.
PRICE INDEX
How much is Wi-Fi on a cruise? Every line, per day
Every line’s day rate, and what a week costs for one, two and four devices.
CARRIERSAT&T, Verizon and T-Mobile at sea
Two charge $20 a day. One sells no cruise pass at all — and that catches people.
START HEREHow to get internet on a cruise
All four options priced side by side, and which to pick for your itinerary.
10 — Questions, answered
Before you go offline.
Clear answers for the parts cruise-plan pages often leave in the small print.
01Do normal travel eSIMs work in the middle of the ocean?+
Usually not. Standard travel eSIMs use terrestrial mobile networks and are best treated as port-only. Open-water service needs a maritime plan that supports your exact ship.
02Why does the signal sometimes disappear near a port?+
Ship cellular systems can switch off within roughly 12 nautical miles of land. Your phone then hands over to a local network, which can create a short coverage gap.
03Does a supported cruise line mean every ship is covered?+
No. Vessel lists change and coverage is ship-specific. We only show an At Sea badge after checking the individual vessel against the provider’s current list.
04Should Airplane Mode be on while using a cruise eSIM?+
Maritime eSIMs generally need Airplane Mode off. Follow your provider’s setup steps, select the travel eSIM for mobile data and disable data switching on your home SIM.
05Is an unlimited cruise plan really unlimited?+
It may include a fair-use threshold or speed reduction. We surface those limits beside each plan instead of hiding them in the small print.
06Can one plan cover sea days and shore excursions?+
Some Cruise + Land plans can, but only on supported ships and in included countries. Other maritime plans need a separate regional eSIM for port days.
07Do cruise ships have Wi-Fi?+
Yes — every major ocean cruise line sells Wi-Fi on board, priced per device per day at roughly $16–40, and most ships now run it over Starlink. What it does not do is come free: the ship’s app is usually free, browsing is not. A maritime eSIM is the cheaper way to cover sea days; any regional eSIM covers the ports.
Ready when you are
Your ship first.
Your ship first.
Then the right plan.
Start with the vessel, count your sea days and keep port coverage clearly separate.
Find my cruise plan
SAILING CONNECTION PASS
Icon of the SeasCaribbean & Bahamas
SEA + PORTSHIP CHECK REQUIRED