ShrimpToast
Land coverage and ship connectivity are different purchases
An ordinary travel eSIM connects to supported land networks. It can help with directions, bookings and messages during a port visit, but it does not include open-ocean or shipboard cellular service. Ship Wi-Fi and maritime mobile networks have their own terms and charges.
Being near shore is not a promise of land reception, especially inside a ship. Check what the cruise line offers for sea days and decide separately what you need while ashore. Do not buy a regional travel plan on the assumption that the sea between its countries is covered.
Count port days for use and the full span for validity
You may need only three days of mobile data on a week-long sailing, but a plan used at the first and last ports must remain valid across the sea days between them. Enter actual port dates in the planner so the gap is counted without pretending you will use land data at sea.
Check each port’s country individually, including islands and territories with their own coverage entries. A Mediterranean or Caribbean label is a starting point for browsing, not proof that every stop on a sailing appears on a particular plan.
An example in practice
Three Mediterranean port stops
- Spain
- France
- Italy
3 port days · One phone · Basics use · 7-day span
Checking example setups…
Illustrative dates start two weeks from today, with gaps between ports. This comparison covers land connections only.
Compare this routeChoose between one regional line and separate port plans
One regional eSIM can reduce installation and data-line changes across included ports. Separate local plans may be cheaper for a short list of stops, but compare the combined cost and the effort of switching during a limited day ashore.
For maps, messages and tickets, a light allowance may be enough; frequent video and uploads call for more. Save excursions, return times and essential directions offline before leaving the ship. The example uses light port-day data and includes gaps in validity, not at-sea coverage.
Keep ship-network charges separate from the shore plan
Review your home carrier’s and cruise line’s advice before sailing. Turning off data roaming alone does not disable ordinary calls or SMS. At sea, airplane mode with Wi-Fi enabled separately can keep cellular connections off while you use a ship Wi-Fi service you have arranged.
Ashore, select the intended travel data line and follow its roaming instructions. Before returning to sea, review your settings again. ShrimpToast can compare plans for the land stops; it cannot monitor which ship network your phone might otherwise join or control your home carrier’s charges.
Working out your allowance? Use the planner’s phone-use guide
Before you choose: common questions
Will this work while the ship is at sea?
No open-ocean or shipboard service is included. Ships may have separate cellular networks or Wi-Fi services with their own charges. Arrange at-sea connectivity with your cruise line or an appropriate provider.
How shipboard cellular service works ↗Can I use it onboard while docked?
Only if your device can connect to a land network included in your plan. Reception inside the ship or near shore is not guaranteed. Being close to a covered country does not turn a maritime network into included coverage.
How do I avoid accidental ship-network charges?
Keep cellular connections off at sea, such as by using airplane mode and enabling Wi-Fi separately when appropriate. Check your home carrier and cruise-line settings and charges before sailing; turning off only mobile data does not disable voice or SMS roaming.
Should I enter sea days as destinations?
No. Enter port countries with dates. The planner uses those dates to check elapsed validity between covered stops, while estimating mobile usage for the port days. It does not provide data for the sea-day gaps.
Which ports are on your sailing?
Plan the land connections here. Keep the ship’s internet arrangements separate.
Plan my port stops