For two decades, satellite internet on a moving vessel meant a slow, expensive Ku- or Ka-band VSAT. Today, two low-earth-orbit constellations have rewritten the rules and are competing hard for every fleet decision in South East Asia: Eutelsat OneWeb and SpaceX Starlink.

They sound similar. They are not. This is the same comparison we walk through with every fleet operator in Singapore who has to choose, refit, or stand up a redundant link.

The 30-Second Summary

• Starlink is consumer-grade fast, easy to install, sold direct, paid monthly, and runs on more than 6,000 satellites. Best for owner-operators, yachts, fishing fleets, and most commercial vessels that want speed and simplicity.
• OneWeb is enterprise-grade, sold through certified service providers, runs on a smaller 648-satellite constellation in higher polar orbits, and is built around committed-information-rate plans, SLAs, and managed integration. Best for large fleet operators, OSV / offshore, and customers who need contractual guarantees.

Network Architecture

Attribute	Starlink	OneWeb
Operator	SpaceX	Eutelsat OneWeb
Constellation size	~6,000+ active satellites	~648 satellites
Orbit altitude	~550 km	~1,200 km
Sales model	Direct + authorised resellers	Service providers / authorised distributors only
Typical contract	Monthly, pause/resume	1–3 year terms with SLAs

Coverage in SE Asia

Both constellations now cover SE Asia comprehensively. The practical difference is congestion and beam priority, not raw availability.

• Starlink in SE Asia is mature: dense beams across the South China Sea, Sulu Sea, Andaman, and the Indonesian archipelago. The trade-off is that the consumer base is large, so beam congestion can throttle speeds in busy lanes during peak hours unless you are on a Mobile Priority plan.
• OneWeb beams are quieter because the customer base is smaller and enterprise-only. Throughput is more predictable, but absolute peak speed is lower than a well-fed Starlink Maritime terminal in an empty cell.

Hardware

The hardware story is one of the bigger differences and often decides the call.

• Starlink hardware is built and sold by SpaceX. The maritime line is the Flat High Performance terminal; the lighter alternative is the Starlink Mini. Antennas are flat phased-array, electronically steered, and self-installing. You can have a vessel online inside an hour.
• OneWeb hardware comes from third-party manufacturers — Intellian, Kymeta, Hughes, and others — typically as flat-panel or compact tracking antennas. Hardware is more expensive than Starlink and installation is professional rather than DIY, but the build quality and ruggedisation match enterprise marine standards.

Speed and Latency

Metric	Starlink Maritime	OneWeb Maritime
Peak download (vessel under way)	40–220+ Mbps	50–195 Mbps
Typical download	50–150 Mbps	50–100 Mbps
Latency	~30–100 ms	~70–110 ms
Throughput predictability	Variable with congestion	More consistent

For most operational use — video calls, cloud backup, IoT, crew welfare — either is dramatically better than any GEO VSAT and the practical experience is similar. The difference shows up at the edges: peak burst speeds favour Starlink, while consistent guaranteed throughput favours OneWeb.

Pricing Model

• Starlink sells data in monthly buckets (50 GB, 1 TB, 5 TB Mobile Priority and higher) with overage per gigabyte. Hardware is a one-time purchase. No long contract.
• OneWeb sells committed information rate (CIR) bandwidth with a minimum monthly recurring charge over a contract term. Hardware is purchased or leased through the service provider. Contracts include SLAs, support tiers, and managed network options.

Practical translation: Starlink is the cheaper monthly bill for an owner-operator or single vessel. OneWeb is the cheaper total cost for a fleet that needs guaranteed bandwidth, integrated network management, and a paper SLA the procurement team can hold.

Service Availability and Channel

• Starlink can be ordered direct from SpaceX or through authorised resellers. Activation is fast and self-service.
• OneWeb is only sold through certified service providers. This is a feature, not a bug — it means a real human technical account manager, custom MIR/CIR plans, and managed integration with shoreside infrastructure.

Envision Data works with both ecosystems and can quote against either, often as a primary plus backup pairing on the same vessel.

Maritime Suitability

• Owner-operator yacht or fishing vessel: Starlink Mini or Starlink Maritime, sold one-off, no contract.
• Tug or coastal trader, single vessel: Starlink Maritime, with an L-band backup.
• Mid-size fleet (5–20 vessels) with mixed routes: Starlink as primary, OneWeb or Inmarsat as secondary on critical hulls.
• Offshore / OSV / managed fleet with strict SLA, dedicated routes: OneWeb as primary, Starlink as secondary for crew welfare.
• Large shipping company with shoreside SOC and audit needs: OneWeb tends to win on procurement, with Starlink for non-critical traffic.

The Recommended Architecture for 2026

For most working vessels in SE Asia, the right answer is not OneWeb or Starlink — it is one as primary with the other or an L-band path as backup. Resilience matters more on a moving vessel than absolute peak speed, and the marginal cost of a second path has fallen far enough that single-network vessels are now the exception, not the rule.

Related Reading

• Starlink Maritime in Singapore: Plans, Pricing, and How to Buy
• Crew Welfare Internet at Sea: What Actually Works in 2026
• Maritime IoT and Fleet Management Buyer’s Guide
• Iridium 9555 vs IsatPhone 2 for SE Asia Fishing Fleets

How to Decide for Your Fleet

Send us your fleet profile — vessel types, operating regions, monthly data target, and whether you need a procurement-ready SLA — and we will reply with a same-day SGD quote covering both options head-to-head, including any bundle savings on the secondary path.

Email sales@envisiondatasg.com or WhatsApp +65 9088 4899.