Can Starlink replace a VHF or an EPIRB?

No. Starlink is internet. It is not a distress system, not a lookout, and not a substitute for VHF voice or a 406 MHz beacon. Keep the radio and the EPIRB.

Does Iridium still matter if I have Starlink?

Yes, if you go beyond reliable coastal coverage, care about a small-antenna comms path, or want a handset that does not depend on a dish staying locked. Iridium is the fallback sentence.

Will Starlink work in the Whitsundays?

Often, on current coastal plans, with a clear sky and a mounting that can see it. Elsewhere — cyclone holes, deep into a river, a mast that shadows the dish — treat it as a bonus, not a promise.

Comms and safety · 12 min read · Updated 2026-09-17

Iridium vs Starlink at sea for Australian boats

Starlink changed the coastal internet argument. Iridium still owns the distress-and-truly-offshore argument. Many Australian cruisers now carry both.

Radar and communication antennas on a wheelhouse roof

The archived AM Wholesale comms wall listed Iridium, KVH, Mazu and “satellite TV” next to Icom. That world was expensive and slow, and it was how an east-coast boat stayed on the planet. Starlink has since changed the kitchen-table half of the argument. It has not changed the distress half.

What Starlink is

A broadband dish and a plan. On an Australian coastal cruiser it can mean weather charts that actually download, a video call from a quiet anchorage, and a skipper who can send a yard a photo of a weeping fitting. It wants sky, power and a mount that will survive a punting. It is not a GMDSS device. It is not VHF. It is not an EPIRB.

Coverage, fair-use and maritime plan rules move. Specify the current maritime product, not last year’s backyard dish.

What Iridium is

A low-earth constellation that phones and small data terminals have used for years. Handsets, Go-class terminals and the older 9555-style units still earn a place because the antenna is small, the behaviour is known, and a short message can leave a boat that has no dish. Iridium is how you still say “we are OK” when the dish is in a locker.

Short-burst weather and a voice call are the product. Streaming is not.

KVH, Mazu and the older sat world

The old wholesale list also carried KVH and Mazu: stabilised TV and marine satcom for boats that wanted a dome. Those products have not vanished, but the buying question is now “what does Starlink not do for this hull?” — TV at sea, a contract the owner already has, or a dome the boat already wears.

How Australian crews are actually combining them

Trailer boat and Broadwater weekender: VHF, a phone, maybe a PLB. Stop there.
East-coast cruiser: VHF, EPIRB, Starlink on a coastal plan, Iridium or a small sat messenger as the fallback.
Offshore or commercial: the GMDSS / AMSA conversation first, then convenience internet.

Power and mounting sit on the same roof as radar. Give the dish sky that the radar did not already claim, and put the load on the house bank.

If you are a dealer still thinking in cartons, the wholesale buying guide is the trade-desk companion to this consumer piece.

Frequently asked questions

Can Starlink replace a VHF or an EPIRB?: No. Starlink is internet. It is not a distress system, not a lookout, and not a substitute for VHF voice or a 406 MHz beacon. Keep the radio and the EPIRB.
Does Iridium still matter if I have Starlink?: Yes, if you go beyond reliable coastal coverage, care about a small-antenna comms path, or want a handset that does not depend on a dish staying locked. Iridium is the fallback sentence.
Will Starlink work in the Whitsundays?: Often, on current coastal plans, with a clear sky and a mounting that can see it. Elsewhere — cyclone holes, deep into a river, a mast that shadows the dish — treat it as a bonus, not a promise.