Which Starlink plan do I need for a boat?

For lakes, rivers, and coastal cruising within standard land/coastal coverage, a Roam plan is usually all you need and is the most affordable choice. For true open-water and offshore use, you need Starlink's maritime service (the Mobile Priority / Boats tier), which is sold in data buckets and costs significantly more. Confirm current plan names and pricing at starlink.com before you buy.

How far offshore does Starlink work?

Roam plans are designed for land and nearby coastal water, so coverage typically fades a short distance from shore. To stay online well offshore you need Starlink's maritime Mobile Priority service, which is built for ocean use and extends far beyond the coastline within the maritime footprint. Coverage maps and the available footprint change over time, so always check current ocean coverage at starlink.com for your cruising grounds.

How do you mount Starlink on a boat?

Most boaters use a marine-grade rail or pole mount that gives the dish a clear, unobstructed view of the sky away from masts, radar arches, and biminis. For the Mini, multi-mounts and tripod adapters designed for cars, roofs, and yachts work well. Use stainless or marine-rated hardware, add anti-vibration padding, and treat all connections with corrosion protection because salt air is relentless.

Starlink for Boats: The Complete Marine Setup Guide

Q: Does Starlink work on a boat?

Yes. Starlink works well on boats anywhere within its satellite coverage footprint, which now includes most coastal and inland waters plus a growing share of open ocean. Near shore you can expect 50-200+ Mbps down and 5-20 Mbps up. The dish is electronically steered with no moving parts, so it handles a rocking deck better than a motorized antenna. The two variables that matter are which plan you carry and how far offshore you go.

Q: Can you use the Starlink Mini on a boat?

Absolutely. The Mini is one of the best marine options for small craft, lake boats, and coastal cruisers. At just 2.43 lbs with a built-in 12-48V DC barrel jack, it runs straight off a boat's 12V battery system with no inverter, draws only about 25-40W, and is small enough to mount on a rail or pole. Its main trade-offs are WiFi 5 (not WiFi 6) and no built-in Ethernet port.

If you have spent any time on the water, you know the cell signal disappears about the time the scenery gets good. Starlink for boats closes that gap. Whether you run a center console on a lake, cruise the coast on weekends, or live aboard full time, the same satellite network that put RVers online anywhere is now genuinely practical at the helm. The catch is that "on a boat" covers everything from a calm marina to 200 miles offshore, and the right setup looks very different at each end of that range.

This guide walks through the decisions that actually matter: which dish to run, which plan keeps you legal and online, how to mount and power the system in a marine environment, and where the real limits are. Much of it overlaps with mobile setups on land, so if you are new to the hardware, start with our portable Starlink complete guide and then come back here for the salt-water specifics.

Does Starlink work on a boat?

Yes, and it works better than most people expect. The dish is a phased-array, electronically steered antenna with no moving parts, which is a big deal on a boat. A motorized marine antenna hates a pitching, rolling deck; an electronically steered panel simply re-aims its beam in software, so a little chop barely registers.

Within coverage, near-shore performance lands in the 50-200+ Mbps download and 5-20 Mbps upload range, which is plenty for video calls, streaming, navigation downloads, and remote work. The two things that change your experience are how far offshore you go and which plan you carry, and those two are tightly linked.

Coverage and offshore range

Inland and coastal waters are covered by standard service. Lakes, rivers, bays, the ICW, and a band of coastal ocean are all generally fine on a consumer plan.
Open ocean is a different animal. Standard plans are built for land and nearby water, so coverage fades as you leave the coast. Genuine offshore use requires Starlink's maritime service.
Coverage maps change. SpaceX adds ocean footprint regularly, so check current ocean coverage at starlink.com for the specific waters you cruise before assuming you will be connected.

Which dish for a boat: Mini vs Standard

There is no single best dish for every boat. Match the hardware to the boat and how you use it.

Starlink Mini: the small-craft and coastal champion

The Mini is the standout choice for lake boats, day cruisers, and many coastal sailors. It is purpose-built for mobile, low-power, space-constrained installs:

Weighs just 2.43 lbs and is small enough to mount on a rail or stow in a locker.
Built-in 12-48V DC barrel jack runs straight off a boat's 12V system with no inverter.
Sips power at roughly 25-40W, which matters enormously when you are living on a battery bank.
Electronically steered, so a rocking deck is a non-issue.
WiFi 5 with up to 128 devices for onboard coverage.

The honest trade-offs: it uses WiFi 5 rather than WiFi 6, and it has no built-in Ethernet port (you will need an adapter to wire it to a router). The Mini runs about $249 ($199 with new-customer activation). For a deeper look at how it performs on the move, see our Starlink Mini for travel guide and the head-to-head in Starlink Mini vs Gen 3 for RV.

Standard and Flat High Performance: bigger boats, harder conditions

For larger cruisers, liveaboards, and anyone going truly offshore, step up:

Standard (Gen 3) dish offers more antenna area and higher peak throughput, a good fit for bigger boats that have the power and space.
Flat High Performance is the dish SpaceX recommends for maritime/Mobile Priority use. It has a wider field of view, higher peak speeds, better water resistance, and tougher build for challenging conditions. It is also the most expensive option by a wide margin.

Rule of thumb: Mini for small craft, lakes, and coastal weekends; Standard or Flat High Performance for liveaboards, larger vessels, and offshore passages.

Which plan for a boat: Roam vs the maritime "Boats" tier

This is where boaters trip up. The dish gets you on the network; the plan determines where you are allowed to use it and how it is billed.

Roam — inland and coastal

A Roam plan is the everyday, affordable option and the right call for the majority of recreational boaters who stay on lakes, rivers, and within standard coastal coverage. It is the same mobile-friendly service RVers use, so the pricing and structure mirror our Starlink RV plans and pricing breakdown. If your boating happens within sight of land or on inland water, Roam is almost always enough.

Maritime / Mobile Priority — open water

For real offshore use, you need Starlink's maritime service, marketed under the Mobile Priority / Boats tier. This is a different product class:

It is designed for ocean coverage that extends well beyond the coastline.
It is sold in data buckets (priority data) rather than simple unlimited land service, with tiers scaling from a smaller monthly bucket up to very large allotments for commercial and charter use.
It costs substantially more than Roam. Public reference pricing has started around the low hundreds of dollars per month for the smallest priority-data bucket and climbs steeply from there.

Because these tiers, names, and prices change, do not budget off a number you read in an article. Confirm the current maritime plan options and pricing directly at starlink.com for your region. The practical takeaway: if you only cruise coastal water, save your money and run Roam; if you cross open ocean, the maritime plan is not optional.

Mounting Starlink on a boat

A boat is the harshest mounting environment Starlink will ever see. Wind load, vibration, UV, and salt spray all conspire against a sloppy install.

Get a clear view of the sky

The dish needs an unobstructed view. Mount it away from masts, radar arches, biminis, and antennas that can shadow the beam. A high, open spot on a rail, pole, or hardtop edge usually works best.

Use marine-grade mounts and hardware

For the Mini, an adjustable multi-mount built for cars, roofs, boats, and yachts is a clean solution. The Sozato Starlink Mini multi-mount is designed for exactly this kind of cross-platform use, and the Anautin Starlink Mini tripod mount is handy for temporary or repositionable setups.
For rail clamps and pole adapters, look for a dedicated marine rail mount on Amazon.
Use stainless or marine-rated fasteners. Plain steel hardware rusts to nothing in a season of salt air.

Tame vibration and movement

Engine and hull vibration loosens fasteners and fatigues cables over time. Add anti-vibration padding under the mount, use thread locker on bolts, and leave a service loop of slack in the cable so a rolling sea does not tug the connector.

Powering Starlink on a boat

Power is where the Mini earns its keep on the water.

Why the Mini's DC input is ideal

Most boats run a 12V DC house system. The Mini accepts 12-48V DC through a barrel jack, which means it plugs into your boat's electrical system directly with no inverter in the loop. That eliminates the inefficiency, heat, and failure point of an AC inverter and keeps draw low at roughly 25-40W. The full off-grid playbook lives in our guide to powering the Starlink Mini off-grid.

Practical power options

Hardwire to the house bank. A 12V-to-48V DC step-up kit like the XTAR EL3 V2 lets you feed the Mini cleanly from a 12V system with the right voltage, fused and protected.
Run from a portable power station when you do not want to wire into the boat. An EcoFlow RIVER 2 portable power station is enough to keep the Mini running for hours and recharges from shore power or solar.
Mind the budget at anchor. At 25-40W the Mini will run all day off a modest battery bank, but the bigger Standard and Flat High Performance dishes draw far more and may need an inverter or larger reserve.

WiFi distribution belowdeck with a router

The Mini's built-in WiFi 5 is fine in the cockpit, but fiberglass, bulkheads, and a cabin full of metal kill signal fast. To cover the whole boat, pair the dish with a dedicated travel router.

A router like the GL.iNet Slate AX rebroadcasts Starlink into a stronger, more configurable network and lets you fail over to a marina hotspot or a cellular SIM when you have it.
Because the Mini has no Ethernet port, you will need an adapter to wire it to the router; many boaters instead let the router connect to the Mini's WiFi and rebroadcast.
For choosing the right model, see our roundup of the best travel routers for Starlink and RV. And since you will be doing banking and remote work over a network you do not fully control, lock it down with our Starlink VPN and security guide.

Weatherproofing and salt-water care

Salt is the enemy. A little maintenance keeps the system alive for years.

Protect every connection. Treat plugs and exposed contacts with a marine corrosion spray and keep cable entries sealed.
Rinse after offshore trips. A freshwater rinse knocks salt off the dish and mount before it cakes on.
Route cables to shed water. Add drip loops so water runs off rather than into connectors, and avoid low spots where moisture pools.
Inspect regularly. Check fasteners, gaskets, and the mount each season; vibration and UV degrade everything over time.

Limitations and costs

Starlink for boats is excellent, but go in with eyes open:

Offshore is expensive. Roam is affordable; the maritime Mobile Priority plan costs many times more and is metered. If you only cruise coastal, you do not need it.
Coverage is not universal. Ocean footprint is growing but incomplete. Verify your cruising grounds at starlink.com before relying on it.
Power and space scale up fast. The Mini is light and frugal; the offshore-grade dishes are heavy, power-hungry, and pricey.
Hardware lives hard. Salt, vibration, and UV mean marine installs need better mounts, better hardware, and more upkeep than a backyard setup.
No Ethernet on the Mini. Plan for an adapter if you want a wired router connection.

Frequently asked questions

Does Starlink work on a boat? Yes. Within coverage you can expect 50-200+ Mbps down and 5-20 Mbps up. The electronically steered dish handles a moving deck well; your real variables are plan choice and distance offshore.

Can you use the Starlink Mini on a boat? Yes, and it is ideal for small craft and coastal cruising thanks to its 2.43 lb weight, 12-48V DC input, and 25-40W draw. The trade-offs are WiFi 5 and no Ethernet port.

Which plan do I need? Roam for lakes and coastal water; the maritime Mobile Priority (Boats) tier for open ocean. Confirm current pricing at starlink.com.

How far offshore does it work? Roam fades a short distance from shore; maritime service extends well offshore within the ocean footprint. Always check the current coverage map.

How do you mount it? Use a marine-grade rail or pole mount with a clear sky view, stainless hardware, anti-vibration padding, and corrosion protection on every connection.

What to do next

Compare hardware in our Starlink Mini vs Gen 3 for RV breakdown to pick the right dish for your boat.
Read the portable Starlink complete guide for the foundations of any mobile setup.
Nail down power with how to power the Starlink Mini off-grid.
Choose your onboard network from the best travel routers for Starlink and RV.
Budget realistically using our Starlink RV plans and pricing guide.
Secure your connection with the Starlink VPN and security guide.

This page may include affiliate links. If you purchase through them, we may earn a commission at no extra cost to you.