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Software · head to head

Dataloy vs Weathernews Inc

Dataloy logo

Dataloy

Software

Voyage management and operations

From
$1500/month
Rated
-
Full reviewWebsite
Weathernews Inc logo

Weathernews Inc

Software

Global weather solutions for shipping

From
$600/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Dataloy dataloy has been rebranded as Sedna VMS ("Sedna Trade Voyage Management System (Dataloy)"); its own site publishes no pricing and every plan action is a Request a demo button, per Sedna's own site.; Weathernews Inc primarily Japan-based with headquarters in Chiba, may have lower coverage in certain regional markets outside Asia
  • They diverge on capability: Dataloy covers Operations management, Weathernews Inc covers Optimum ship routing.

Where they differ

Only the attributes on which Dataloy and Weathernews Inc actually diverge.

Attributes where Dataloy and Weathernews Inc differ
AttributeDataloyWeathernews Inc
Starting price$1500/month$600/month
PlatformsWeb, WindowsWeb, Api, Mobile
Founded19871986

Identical on both: pricing model (subscription), free tier (No), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Dataloy

  • Operations management
  • Demurrage calculation
  • Bunker planning
  • ERP systems
  • Accounting
  • Market data
  • Windows support

Only in Weathernews Inc

  • Optimum ship routing
  • Weather forecasting
  • Risk assessment
  • Fleet management
  • Bridge systems
  • Navigation software
  • Api support
  • Mobile support

Both cover

  • Voyage planning
  • Web support

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Dataloy

  • Dataloy has been rebranded as Sedna VMS ("Sedna Trade Voyage Management System (Dataloy)"); its own site publishes no pricing and every plan action is a Request a demo button, per Sedna's own site.

Weathernews Inc

  • Primarily Japan-based with headquarters in Chiba, may have lower coverage in certain regional markets outside Asia
  • Marine weather data and aviation services are newer offerings compared to core weather forecasting capabilities
  • Competition from established European weather services in maritime sector

Pricing, plan by plan

Dataloy

$1500/month
  • VMS Pro$3000/month
    • Voyage planning
    • Operations
    • Demurrage

Weathernews Inc

$600/month
  • Optimum Routing$1500/month
    • Weather routing
    • Voyage optimization
    • 24/7 support

Which should you pick?

Choose Dataloy if

  • You need operations management.
  • You work on Web, Windows.
  • You also want demurrage calculation.
Dataloy review

Choose Weathernews Inc if

  • You need optimum ship routing.
  • You work on Web, Api, Mobile.
  • You also want weather forecasting.
Weathernews Inc review

Questions people ask

Is Dataloy or Weathernews Inc better?
Neither clearly leads. Dataloy starts at $1500/month and Weathernews Inc at $600/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Dataloy or Weathernews Inc?
Dataloy starts at $1500/month and Weathernews Inc at $600/month.
Does Dataloy or Weathernews Inc run on more platforms?
Dataloy runs on Web, Windows. Weathernews Inc runs on Web, Api, Mobile.
What can Dataloy do that Weathernews Inc cannot?
Dataloy covers Operations management, Demurrage calculation, Bunker planning, ERP systems. Weathernews Inc covers Optimum ship routing, Weather forecasting, Risk assessment, Fleet management. Both handle Voyage planning, Web support.

Answered from the vendors’ own pages

Weathernews Inc: Does Weathernews provide marine weather data?

Yes. Weathernews provides wind, wave, current, sea ice, and typhoon information for global marine operations through its SeaNavigator platform, which launched SeaNavigator for Master in December 2025 with AI-assisted operations support.

Source
Weathernews Inc: What marine weather products does Weathernews offer?

Weathernews offers SeaNavigator Marine Weather Service, SeaNavigator for Master with conversational AI for captains, and marine data for Middle East waters made available free of charge in April 2026.

Source
Weathernews Inc: Does Weathernews serve the aviation industry?

Yes. Weathernews expanded aviation services with the December 2025 launch of SkyAviators, offering Global Aviation Weather Intelligence with turbulence risk assessments and takeoff/landing feasibility judgments for airports worldwide.

Source
Weathernews Inc: What was Weathernews founded in response to?

Weathernews was founded on June 11, 1986 by Hiro Ishibashi in response to a tragic maritime disaster where a cargo vessel sank at the port of Onahama, Japan with 15 crew members lost, demonstrating the need for better weather information.

Source
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