Satellite Internet for Boats: 4G vs Starlink Cost Guide

A fleet manager running six offshore supply vessels in the North Sea is paying EUR 3,200 per month per vessel for Ku-band VSAT. The contract includes 20 Mbit/s shared bandwidth, 600-millisecond latency, and a hardware installation that cost EUR 40,000 per vessel three years ago. The vessels operate within 50 km of the Dutch and Norwegian coasts for 85% of their operational hours. On the deep-water transit legs, which account for the remaining 15%, the VSAT connection is the only option.

The question this fleet manager should be asking is not whether satellite internet for boats works. It does. The question is whether paying open-ocean satellite rates for a fleet that operates predominantly nearshore is the right allocation of budget. For most commercial vessels that spend the majority of their time within 70 km of coastline, the answer is no. A 4G LTE connection with a long-range antenna delivers faster speeds, lower latency, and a fraction of the monthly cost. Satellite becomes the backup, not the primary.

This article compares the three main marine internet options for commercial vessels: 4G LTE with long-range antenna, Starlink Maritime (LEO satellite), and traditional VSAT (GEO satellite). Real cost numbers, performance specs, and a decision framework for fleet managers evaluating their connectivity spend.

Maritime internet cost comparison: 4G LTE vs Starlink vs VSAT

The following comparison uses current market pricing as of early 2026. Satellite pricing has shifted significantly in the past 18 months, particularly with Starlink Maritime reducing its unlimited data plan for IMO-registered vessels from USD 25,000 to USD 2,500 per month in late 2025. VSAT pricing remains relatively stable but varies widely by provider and contract terms.

The cost gap is most dramatic when comparing hardware investment. A 4G maritime antenna with amplifier and router costs EUR 500 to 2,000. A Starlink Maritime terminal runs approximately EUR 1,500 to 2,500. A VSAT Ku-band installation starts at EUR 25,000 and can exceed EUR 65,000 for larger antenna systems. For a fleet of ten vessels, the hardware difference alone between 4G and VSAT represents a six-figure capital expenditure decision.

4G LTE for maritime internet: what it delivers nearshore

A 4G LTE connection using a professional maritime broadband antenna reaches up to 70 km from the coast. Within that range, it delivers download speeds of up to 150 Mbit/s and upload speeds of up to 50 Mbit/s, with latency of 20 to 40 milliseconds. These numbers exceed what most VSAT installations deliver, at a fraction of the cost.

The operational profile that benefits most from 4G as a primary connection includes coastal shipping, offshore wind farm service vessels, nearshore oil and gas supply vessels, ferry operators, inland waterway transport, and any vessel that spends the majority of its time within range of coastal cell towers. For these operations, 4G is not a compromise. It is the highest-performance option available.

How multi-network SIM maximises 4G coverage at sea

The effective range and reliability of maritime 4G depends heavily on the SIM architecture. A non-steered multi-network SIM connects to the strongest available carrier from 700+ networks across 195 countries. This means the vessel is not locked to a single operator’s coastal towers. If one carrier’s signal fades, the device switches to the next strongest available network automatically. Weconnect’s maritime internet solutions use this non-steered architecture as default, ensuring the vessel always connects to the best available signal at its current position.

Starlink Maritime: where LEO satellite fits in the comparison

Starlink Maritime has fundamentally changed the satellite internet for boats market. By using a constellation of Low Earth Orbit satellites instead of traditional geostationary satellites, Starlink delivers latency of 20 to 40 milliseconds, comparable to 4G, and download speeds of 25 to 250 Mbit/s depending on the plan and terminal.

Pricing has compressed rapidly. In September 2025, SpaceX reduced its unlimited data plan for IMO-registered commercial vessels from USD 25,000 to USD 2,500 per month. The entry-level maritime plan starts at approximately USD 250 per month with data caps. Hardware costs approximately USD 2,000 for the Performance Kit, which is rated for maritime conditions including saltwater corrosion resistance and high-vibration environments.

Where Starlink wins over 4G

Starlink’s advantage is coverage. It works in the middle of the Atlantic, in the Southern Ocean, and on trans-oceanic routes where no coastal cell tower exists. For vessels that operate primarily on open-ocean routes, Starlink is the clear choice over 4G. It also provides a genuine broadband experience that VSAT at comparable price points cannot match.

Where 4G wins over Starlink nearshore

Within 70 km of the coast, 4G LTE with a long-range antenna typically delivers higher and more consistent speeds than Starlink, at a lower monthly cost. Starlink’s performance can degrade in areas with heavy satellite traffic or limited overhead satellite passes. 4G latency is comparable but more stable. Monthly data costs for 4G are significantly lower: a maritime 4G data plan from Weconnect costs a fraction of even the lowest Starlink Maritime tier. For a fleet of ten nearshore vessels, this difference compounds to tens of thousands of euros per year.

Traditional VSAT: still relevant or legacy cost?

VSAT using geostationary (GEO) satellites has been the default maritime internet technology for two decades. It provides global coverage, established reliability, and mature service-level agreements. For large merchant fleets with existing VSAT contracts, the sunk cost in hardware and long-term agreements means VSAT will remain in place for years.

The economics, however, have shifted. VSAT hardware costs EUR 25,000 to 65,000 per vessel. Monthly airtime ranges from EUR 500 to over EUR 5,000 depending on bandwidth and provider. Latency is inherently high at 600 to 800 milliseconds because geostationary satellites orbit at 36,000 km altitude, compared to Starlink’s LEO constellation at approximately 550 km. Download speeds of 1 to 50 Mbit/s are typical, with most commercial vessel plans operating at the lower end.

For fleet managers evaluating new connectivity investments, VSAT as the sole primary connection is increasingly difficult to justify unless the vessel operates exclusively on deep-ocean routes with no viable Starlink or 4G alternative.

The hybrid setup: 4G primary, satellite backup

The optimal configuration for most commercial fleets operating in European waters is not 4G or satellite. It is both, configured as a hybrid system with automatic failover.

In this model, 4G serves as the primary connection when the vessel is within coastal range. The connection delivers the highest speed and lowest latency at the lowest per-GB cost. When the vessel moves beyond 4G range on open-water transit legs, the system fails over to Starlink or VSAT for continuous coverage.

How this works with Weconnect

Weconnect supports hybrid maritime configurations through its plataforma de gestión de conectividad. A pay-per-GB IoT SIM provides the 4G backbone. The SIM only generates cost when data is being consumed, making it a natural complement to a Starlink subscription. When the vessel is nearshore and connected via 4G, no Starlink data is used. When the vessel moves offshore and 4G drops, Starlink takes over. Both connections are visible in the same management dashboard, giving the fleet manager a unified view of connectivity status and data consumption across the fleet.

For a vessel that operates 85% nearshore and 15% in open water, this hybrid model typically reduces total connectivity spend by 40 to 60% compared to a satellite-only configuration, while maintaining continuous coverage at all times.

Which marine internet option is right for your fleet?

The decision depends on three factors: where the vessel operates, how much data it consumes, and what the connectivity is used for.

Choose 4G as primary if:

The vessel operates within 70 km of the coast for the majority of its operational hours. This includes coastal shipping, offshore wind, nearshore oil and gas, ferries, and inland waterways. 4G delivers the best performance at the lowest cost for these profiles.

Choose Starlink as primary if:

The vessel operates primarily on open-ocean routes beyond consistent coastal tower range. Starlink provides broadband-grade speeds and low latency at a fraction of traditional VSAT cost.

Choose a hybrid 4G + satellite setup if:

The vessel splits time between nearshore and open-water operations. This covers the majority of commercial fleet profiles in European waters. 4G handles the nearshore legs at lower cost, satellite provides continuous coverage on transit.

Retain VSAT if:

The fleet has existing long-term VSAT contracts and hardware, and operates primarily on deep-ocean routes. Plan for transition to Starlink or hybrid as contracts expire.

Preguntas frecuentes

Is Starlink Maritime worth the cost compared to VSAT for commercial vessels?

For most commercial vessels, Starlink Maritime offers significantly better value than VSAT. Starlink delivers higher speeds (25 to 250 Mbit/s vs 1 to 50 Mbit/s), lower latency (20 to 40 ms vs 600 to 800 ms), and lower hardware costs (approximately EUR 2,000 vs EUR 25,000 to 65,000). Monthly costs depend on data needs, but Starlink’s unlimited plan for IMO vessels at USD 2,500 per month undercuts most equivalent VSAT contracts. For nearshore operations, 4G is still more cost-effective than either satellite option.

What is the real cost per GB for satellite internet at sea?

Cost per GB varies widely. VSAT on metered plans can exceed EUR 10 per GB for low-bandwidth configurations. Starlink’s Global Priority plans start at approximately USD 250 per month for 50 GB (roughly USD 5 per GB), decreasing significantly at higher tiers. Starlink’s unlimited plan for IMO vessels at USD 2,500 per month effectively brings per-GB cost to near zero for high-usage vessels. Maritime 4G data plans are typically the most cost-effective per GB, especially for nearshore operations.

Should I use 4G as primary or backup alongside satellite?

For vessels operating predominantly within 70 km of the coast, 4G should be the primary connection and satellite the backup. 4G delivers faster speeds, lower latency, and lower cost per GB than any satellite option when within range. The satellite backup ensures continuous coverage when the vessel moves beyond coastal tower range.

Which hybrid setup gives best value for coastal commercial vessels?

A 4G connection with a non-steered multi-network SIM as primary, combined with Starlink Maritime as backup, offers the best value for coastal commercial vessels. The 4G SIM operates on a pay-per-GB basis, generating cost only when active. Starlink activates automatically when the vessel moves beyond 4G range. Both connections are managed through a single platform, giving the fleet manager centralized visibility and cost control.

Can 4G LTE really replace satellite for nearshore operations under 50 km?

Yes. Within 50 km of the coast, 4G LTE with a professional maritime antenna delivers higher download speeds (up to 150 Mbit/s), lower latency (20 to 40 ms), and significantly lower monthly costs than both Starlink and VSAT. Many fleet operators in this range have moved to 4G as their sole primary connection, using satellite only as a backup for occasional transit beyond coastal coverage.

Next steps

The right connectivity configuration depends on your fleet’s operating profile. Whether you need a 4G-only nearshore solution, a hybrid 4G and satellite setup, or connectivity management for an existing multi-technology fleet, Weconnect provides maritime internet solutions tailored to your routes and data requirements.

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