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Maritime · head to head

DNV Maritime vs StormGlass

DNV Maritime logo

DNV Maritime

Maritime

Quality assurance and risk management

From
On request
Rated
-
Full reviewWebsite
StormGlass logo

StormGlass

Maritime

Global weather data API for maritime

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only StormGlass has a free tier, so it costs nothing to try first.
  • Each has a real cost: DNV Maritime pricing not published; all services require custom quotes and sales consultation; StormGlass the free tier allows 10 API requests per day and is not licensed for commercial use
  • They diverge on capability: DNV Maritime covers Fleet management, StormGlass covers Marine weather data.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which DNV Maritime and StormGlass actually diverge.

Attributes where DNV Maritime and StormGlass differ
AttributeDNV MaritimeStormGlass
Starting priceOn requestFree
Pricing modelUnknownfreemium
Free tierNoYes
PlatformsWeb, Windows, ApiApi
Founded18642017

Identical on both: user rating (Not yet rated), category (Maritime).

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 DNV Maritime

  • Fleet management
  • Planned maintenance
  • Compliance tracking
  • Document management
  • ERP systems
  • Procurement
  • Classification systems
  • Web support

Only in StormGlass

  • Marine weather data
  • Wave forecasts
  • Tide data
  • Historical weather
  • REST API
  • Webhooks
  • SDKs

Both cover

  • Api support

What people use each for

The jobs each tool is most often brought in to do.

DNV Maritime

  • Maritime vessel classification and certificationnot StormGlass
  • Autonomous ship technology assessment and verificationnot StormGlass
  • Cybersecurity and software solutions for maritime operationsnot StormGlass
  • Fleet compliance and risk management across 160+ years of maritime expertisenot StormGlass

StormGlass

  • Pulling marine weather and sea state forecasts into a vessel routing or planning toolnot DNV Maritime
  • Adding tide, wave and wind data to a maritime or coastal applicationnot DNV Maritime

Where each one falls short

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

DNV Maritime

  • Pricing not published; all services require custom quotes and sales consultation
  • No published technical specifications or system requirements
  • Enterprise-only model; no self-service pricing or standard tier options published

StormGlass

  • The free tier allows 10 API requests per day and is not licensed for commercial use
  • Commercial use and any support at all start at the Medium plan, 49 euros a month
  • The Small plan at 19 euros a month has no support and no commercial licence
  • Request allowances are daily rather than monthly, so a burst of traffic cannot borrow against a quiet week

Pricing, plan by plan

DNV Maritime

On request

No published plan breakdown. See the DNV Maritime review.

StormGlass

Free
  • FreeFree
    • 10 requests per day
    • All weather parameters
    • Not for commercial use
  • Small$19/month
    • 500 requests per day
    • All weather parameters
    • 10% annual discount available
  • Medium$49/month
    • 5000 requests per day
    • All weather parameters
    • Full support
  • Large$129/month
    • 25000 requests per day
    • All weather parameters
    • Full support

Which should you pick?

Choose DNV Maritime if

  • You need fleet management.
  • You work on Web, Windows, Api.
  • You also want planned maintenance.
DNV Maritime review

Choose StormGlass if

  • You need marine weather data.
  • You want to start without paying.
  • You work on Api.
  • You also want wave forecasts.
StormGlass review

Questions people ask

Is DNV Maritime or StormGlass better?
Neither clearly leads. DNV Maritime starts at On request and StormGlass at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DNV Maritime or StormGlass?
StormGlass has a free tier; the other does not. Paid plans start at On request for DNV Maritime and Free for StormGlass.
Does DNV Maritime or StormGlass run on more platforms?
DNV Maritime runs on Web, Windows, Api. StormGlass runs on Api.
Can I use StormGlass for free?
Yes. StormGlass has a free tier, so you can try it without paying. DNV Maritime starts at On request.
What is DNV Maritime best used for?
DNV Maritime is most often used for maritime vessel classification and certification, autonomous ship technology assessment and verification, cybersecurity and software solutions for maritime operations, fleet compliance and risk management across 160+ years of maritime expertise. Of those, maritime vessel classification and certification and autonomous ship technology assessment and verification are not what StormGlass is typically brought in for.
What can DNV Maritime do that StormGlass cannot?
DNV Maritime covers Fleet management, Planned maintenance, Compliance tracking, Document management. StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather. Both handle Api support.

Answered from the vendors’ own pages

DNV Maritime: What solutions does DNV Maritime provide?

DNV offers modern classification solutions that meet current and future market needs, combining technical and operational expertise with risk methodology and in-depth industry knowledge.

Source
StormGlass: Is there a free tier available?

Yes, Stormglass offers a free plan with 10 API requests per day, including all weather parameters, but it is not permitted for commercial use.

Source
DNV Maritime: How does DNV support new maritime technologies?

DNV rules increasingly cover new technologies to support quick adoption of advancements in the maritime industry and smooth implementation of existing technologies while maintaining safety standards.

Source
StormGlass: What does the Medium plan include?

The Medium plan costs 49 EUR per month and includes 5000 daily requests, all weather parameters, and full support for commercial use.

Source
StormGlass: Is annual billing available?

Yes, a 10% discount is available when paying annually on Small, Medium, and Large plans.

Source
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