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Maritime · head to head

Dataloy vs Harbour Assist

Dataloy logo

Dataloy

Maritime

Voyage management and operations

From
$1500/month
Rated
-
Full reviewWebsite
Harbour Assist logo

Harbour Assist

Maritime

Marina, harbour and boatyard management software for United Kingdom and European operators

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Dataloy no pricing published on website; Harbour Assist no pricing is published, and the mandatory setup and data migration fee means the first-year cost is materially above the recurring subscription, which is easy to miss when budgeting.
  • They diverge on capability: Dataloy covers Voyage planning, Harbour Assist covers Berth and mooring management.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Dataloy and Harbour Assist actually diverge.

Attributes where Dataloy and Harbour Assist differ
AttributeDataloyHarbour Assist
Starting price$1500/monthOn request
Pricing modelsubscriptionquote
PlatformsWeb, WindowsWeb, iOS, Android
Founded1987Unknown

Identical on both: 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 Dataloy

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

Only in Harbour Assist

  • Berth and mooring management
  • Contracts and licences
  • Recurring invoicing
  • Customer portal
  • Boatyard work orders
  • Team tasking
  • Online reservations
  • Reporting

What people use each for

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

Dataloy

  • Maritime data extraction and intelligencenot Harbour Assist
  • Vessel tracking and voyage managementnot Harbour Assist
  • Commercial shipping and chartering operationsnot Harbour Assist
  • Port scheduling and compliance monitoringnot Harbour Assist
  • Real-time maritime communications analysisnot Harbour Assist

Harbour Assist

  • A trust port managing several hundred moorings with annual licence renewals and arrears chasingnot Dataloy
  • A sailing club combining membership, berthing and bar accounts under one customer recordnot Dataloy
  • A boatyard scheduling lifts and winter storage alongside berth contractsnot Dataloy
  • A harbour office cutting phone traffic by moving invoice payment and service requests to a customer portalnot Dataloy

Where each one falls short

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

Dataloy

  • No pricing published on website
  • Requires contacting sales team for quotes
  • Custom pricing model per organization
  • No transparent pricing or trial information

Harbour Assist

  • No pricing is published, and the mandatory setup and data migration fee means the first-year cost is materially above the recurring subscription, which is easy to miss when budgeting.
  • The vendor explicitly does not discount, so a small harbour has no negotiating room even when the entry point is a stretch for its budget.
  • Ownership by ClearCourse, a private-equity-backed consolidator of vertical software, brings the pricing and roadmap risks that come with that model, and buyers should ask about uplift terms before committing.
  • It is built for United Kingdom and Irish harbour practice, so an operator elsewhere gets a system full of concepts that do not match local regulation.
  • There is no marketplace or booking demand attached, so unlike Dockwa it fills no berths for you; visitor income still depends on your own marketing.

Pricing, plan by plan

Dataloy

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

Harbour Assist

On request
  • Harbour Assist$undefined/month
    • Quoted by size and complexity of the operation
    • Directory listings place the entry point near GBP 400 per month
    • Mandatory setup and installation fee covering customisation, data migration and training

Which should you pick?

Choose Dataloy if

  • You need voyage planning.
  • You work on Web, Windows.
  • You also want operations management.
Dataloy review

Choose Harbour Assist if

  • You need berth and mooring management.
  • You work on Web, iOS, Android.
  • You also want contracts and licences.
Harbour Assist review

Questions people ask

Is Dataloy or Harbour Assist better?
Neither clearly leads. Dataloy starts at $1500/month and Harbour Assist at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Dataloy or Harbour Assist?
Dataloy starts at $1500/month and Harbour Assist at On request.
Does Dataloy or Harbour Assist run on more platforms?
Dataloy runs on Web, Windows. Harbour Assist runs on Web, iOS, Android.
What is Dataloy best used for?
Dataloy is most often used for maritime data extraction and intelligence, vessel tracking and voyage management, commercial shipping and chartering operations, port scheduling and compliance monitoring. Of those, maritime data extraction and intelligence and vessel tracking and voyage management are not what Harbour Assist is typically brought in for.
What can Dataloy do that Harbour Assist cannot?
Dataloy covers Voyage planning, Operations management, Demurrage calculation, Bunker planning. Harbour Assist covers Berth and mooring management, Contracts and licences, Recurring invoicing, Customer portal.

Answered from the vendors’ own pages

Dataloy: How much does Sedna (Dataloy) cost?

Sedna does not publish pricing on their website. Costs are custom per organization and require contacting their sales team through the Speak to the Team form or Talk to Us call-to-action.

Source
Harbour Assist: How much does Harbour Assist cost?

It is quoted by size and complexity. Directory listings put the entry point near 400 pounds a month, and every client also pays a setup fee for customisation, migration and training.

Dataloy: What is Sedna's pricing model?

Sedna operates on a custom pricing model where costs are determined based on specific organizational needs, product selection, team size, and integration requirements. Contact their team for a personalized quote.

Source
Harbour Assist: Does it bring visitor bookings?

No. It takes online visitor reservations through your own website but has no consumer marketplace, so demand generation remains your responsibility.

Dataloy: How do I request pricing from Sedna?

Submit the Speak to the Team contact form with company information, vertical market, and location. Alternatively, use the Talk to Us button or visit their contact page to connect with the sales team.

Source
Harbour Assist: Who owns it?

ClearCourse, a private-equity-backed group that acquires vertical software businesses in the United Kingdom.

Harbour Assist: Does it handle swinging moorings and drying berths?

Yes, and that is one of the reasons British harbours choose it over marina software designed around American pontoon dockage.

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