Starlink on a Boat: Mounts, Power and Setup Guide
Quick answer: To run Starlink on a boat, you need three things: a Starlink dish with a plan that covers where you boat, a solid marine mount with a clear view of the sky, and a clean power supply. Mount the dish high, out of the radar beam and away from masts or hardtop edges. Use a marine mount like a Scanstrut wedge or PowerTower, seal the cable where it passes through the deck, and size your power system for the dish you choose.
Starlink has made fast internet practical on everything from center consoles to cruising trawlers. The hardware is tough, but the install decides how well it works. A dish on a towel in the cockpit will drop out. A dish mounted high on a proper marine mount, with good power and sealed cabling, will just work. This guide walks you through each choice.
Step 1: Get the dish and plan
Most owners buy the Starlink kit and service plan directly from Starlink. Boat Supplies Direct also carries KVH Starlink kits, which are activated and billed through KVH only. Either way, the mounts and accessories below fit standard Starlink hardware, so check the product listing for your dish model.
Starlink plans for boats change often, so check Starlink's site for current names and coverage. In general terms:
- Roam plans: Built for travel. They work for many boaters who stay on lakes or near the coast.
- Personal Maritime: Aimed at small personal vessels, with use in territorial waters and access to Ocean Mode.
- Ocean Mode: Coverage for use outside territorial waters. It comes with maritime service or as an add-on to Roam.
Confirm your plan allows in-motion use if you want internet while underway, not just at anchor or the dock.
Step 2: Choose Mini or Standard
| Dish | Strengths | Things to know |
|---|---|---|
| Starlink Mini | Small, light, built-in router, designed to run on DC power, low power draw | Smaller antenna, great for small boats and simple installs |
| Starlink Standard | Larger antenna, strong performance | Draws noticeably more power, uses a separate router and power supply |
On smaller boats with limited battery capacity, the Mini is often the easier fit. Check Starlink's specifications page for current power figures before you size wiring and batteries.
Step 3: Pick the right spot
Starlink needs a wide, clear view of the sky. Anything above the dish, like a mast, outrigger, hardtop edge or antenna, can cause dropouts. Use the obstruction check in the Starlink app before you drill any holes.
- Go high. A hardtop, arch or tower usually beats the deck.
- Stay out of the radar beam. Keep the dish clearly above or well below the radar's beam, and follow both the radar and Starlink installation guidance.
- Give other antennas space. Separate it from VHF, GPS and other satellite antennas.
- Think about access. You will need to reach the mount and connectors for service.
Step 4: Choose a mount type
| Mount type | Best for | Notes |
|---|---|---|
| Wedge | Hardtops and flat roofs | Low profile, holds the dish at an engineered angle |
| Flat | Level surfaces with a clear sky view | Simplest and lowest profile |
| Pole or pipe | Arches, towers, pushpits | Raises the dish above nearby obstructions |
| Rail | Sailboats and boats with stainless rails | No drilling, check the rail is stiff enough |
| PowerTower | Hardtops and cabin roofs that need extra height | Lifts the dish above the radar and other gear |
Whatever you choose, use a mount made for your dish model and marine use, with stainless or marine-grade hardware. Bed every fastener in marine sealant.
Step 5: Plan your power
Starlink runs continuously when it is on, so it can be one of the bigger loads on a small boat's battery bank. Plan for it like any other electronics:
- Mini: Designed for DC power, which suits boats well. Use a properly rated DC cable or supply and a fuse or breaker sized for the circuit.
- Standard: Ships with an AC power supply. Many boats run it from an inverter, and DC power options also exist. Read our marine inverter buying guide if you go the AC route.
- Use a switch. Wire it through a breaker or switch so you can shut it off and protect the batteries.
- Size the wire for the run. Long runs need heavier wire to limit voltage drop.
Step 6: Route and seal the cable
- Plan the full cable path from dish to router or power supply before you start.
- Avoid sharp bends, pinch points and chafe spots. Secure the cable every foot or so with marine-grade clamps or ties.
- Where the cable passes through the deck or hardtop, use a cable seal made for the Starlink connector. Standard cable glands may not fit it.
- Leave a drip loop so water runs off before reaching the seal.
- Do not cut and splice the Starlink cable unless the manufacturer supports it. Use the correct length cable instead.
- Mount the router or power supply in a dry, ventilated spot inside.
Our picks for Starlink installs
All in stock at Boat Supplies Direct.
Low-profile hardtop mount
Scanstrut 8" Aluminum Wedge Mount for Starlink.
Extra height above radar and gear
Scanstrut 6" Aluminum PowerTower Mount for Starlink.
Starlink Mini on a pole or flat surface
KVH Starlink Mini Pipe Adapter Flat Mount plus the KVH Starlink Mini DC Power Cable, 15M for long runs.
Waterproof deck pass-through
Scanstrut DS30-SL Starlink Cable Seal for vertical runs, or the Scanstrut Horizontal Cable Seal for side entries.
Complete kit with mount
KVH Starlink Mini Kit with Pipe Adapter and DC Power Cable. Activation and service plans are through KVH only.
Shop all Starlink kits and accessories →
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Frequently Asked Questions
Does Starlink work on a boat?
Yes. Starlink works on boats with a plan that covers where you operate and a clear view of the sky. For use outside territorial waters you need Ocean Mode.
Does Starlink work while the boat is moving?
It can, if your plan and hardware support in-motion use. Check your plan terms with Starlink, and mount the dish securely on a marine mount.
Where is the best place to mount Starlink on a boat?
Up high with a clear sky view, out of the radar beam and away from masts, outriggers and other antennas. A hardtop, arch or tower is usually best.
Can I run Starlink Mini on 12V?
The Mini is designed to run on DC power, which makes it a good fit for boats. Use a supported DC cable or supply and check Starlink's current specifications.
Do I need an inverter for Starlink on a boat?
Not always. The Mini runs on DC. The Standard kit ships with an AC power supply, so many owners use an inverter or a supported DC power option.
How do I waterproof the Starlink cable through the deck?
Use a cable seal made for the Starlink connector, leave a drip loop and bed the seal in marine sealant per the seal maker's instructions.
This guide is general information. Starlink plans, coverage and hardware change often, so confirm current details with Starlink or your service provider. Follow the installation instructions for your dish, mount and radar.
