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Maritime · head to head

Navis N4 vs Sea Machines

Navis N4 logo

Navis N4

Maritime

Terminal operating system

From
$50000/year
Rated
-
Full reviewWebsite
Sea Machines logo

Sea Machines

Maritime

Autonomous vessel control systems

From
$50000/one-time
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Navis N4 vendor domain redirects to Kaleris; no pricing published; Sea Machines requires hardware fitted to the vessel; the autonomy systems are retrofits or new build installations rather than a software purchase
  • They diverge on capability: Navis N4 covers Vessel planning, Sea Machines covers Autonomous control.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Navis N4 and Sea Machines actually diverge.

Attributes where Navis N4 and Sea Machines differ
AttributeNavis N4Sea Machines
Starting price$50000/year$50000/one-time
PlatformsWeb, Windows, ApiEmbedded, Web, Mobile
Founded19882015

Identical on both: pricing model (one-time), free tier (No), 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 Navis N4

  • Vessel planning
  • Yard management
  • Gate operations
  • Equipment management
  • Port community systems
  • Customs
  • Shipping lines
  • Windows support

Only in Sea Machines

  • Autonomous control
  • Remote operation
  • Collision avoidance
  • Pattern following
  • Vessel systems
  • Communication networks
  • Shore-based control
  • Embedded support

Both cover

  • Web support

What people use each for

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

Navis N4

No use cases recorded yet. See the Navis N4 review.

Sea Machines

  • Intelligent voyage and transit autonomy for workboatsnot Navis N4
  • Pattern autonomy for survey and repetitive route worknot Navis N4
  • Collision avoidance using the AI-ris computer vision sensornot Navis N4
  • Remote command and control of vessels, including in GPS denied environmentsnot Navis N4
  • Fleet management and telemetry through Fleetviewer and the SMLINK APIsnot Navis N4

Where each one falls short

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

Navis N4

  • Vendor domain redirects to Kaleris; no pricing published

Sea Machines

  • Requires hardware fitted to the vessel; the autonomy systems are retrofits or new build installations rather than a software purchase
  • Targeted at vessels from 10 to 300 ft, so it does not address the largest commercial tonnage
  • Pricing is not published and is arranged directly with the vendor
  • The SM300-NG is the class-approved unit, so the cheaper SM300-SP does not carry the same approval

Pricing, plan by plan

Navis N4

$50000/year
  • Professional$100000/year
    • Full TOS
    • Optimization
    • Analytics

Sea Machines

$50000/one-time
  • SM300$75000/one-time
    • Autonomous control
    • Collision avoidance
    • Remote operation

Which should you pick?

Choose Navis N4 if

  • You need vessel planning.
  • You work on Web, Windows, Api.
  • You also want yard management.
Navis N4 review

Choose Sea Machines if

  • You need autonomous control.
  • You work on Embedded, Web, Mobile.
  • You also want remote operation.
Sea Machines review

Questions people ask

Is Navis N4 or Sea Machines better?
Neither clearly leads. Navis N4 starts at $50000/year and Sea Machines at $50000/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Navis N4 or Sea Machines?
Navis N4 starts at $50000/year and Sea Machines at $50000/one-time.
Does Navis N4 or Sea Machines run on more platforms?
Navis N4 runs on Web, Windows, Api. Sea Machines runs on Embedded, Web, Mobile.
What can Navis N4 do that Sea Machines cannot?
Navis N4 covers Vessel planning, Yard management, Gate operations, Equipment management. Sea Machines covers Autonomous control, Remote operation, Collision avoidance, Pattern following. Both handle Web support.

Answered from the vendors’ own pages

Navis N4: How is Navis N4 priced?

Navis's website now redirects to Kaleris.com. The Kaleris website does not publish public pricing for its N4 container terminal operations software. Pricing appears to be available only through direct consultation with their sales team.

Source
Sea Machines: How much does Sea Machines cost?

Pricing is not published. Sea Machines requires customers to contact their sales team directly through the Contact Us link on their website for pricing quotes tailored to specific products and use cases.

Source
Navis N4: How can I request a quote for Navis N4?

Interested organizations can request a demo or contact Kaleris directly through their 'Get a Demo' call-to-action on the website. Pricing quotes are customized based on operational requirements.

Source
Sea Machines: What is the pricing model for Sea Machines products?

Sea Machines offers autonomy systems and software solutions for maritime vessels. Pricing is determined on a per-product basis through direct sales consultation rather than published subscription tiers.

Source
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