Get your ClassNK survey status through an API

What you can build on Customer Hub

• Get Vessel List alarms

  Build this

  Reads the Vessel List in Ship in Service: each fleet vessel with its survey/audit due date alarm and its certificate alarm, highest priority first.

  Takes

  Nothing

  Returns

  Vessel name, due date alarm, certificate alarm, alarms from linked systems

• Get a vessel's survey status

  Build this

  Opens one vessel's Status (Survey) screen and reads its survey status, periodical survey and audit items and their due and range dates.

  Takes

  Vessel name or IMO No.

  Returns

  Survey status, kind of survey, kind of audit, due date, range date

• Check application history

  Build this

  Reads the History (Survey) and History (Audit/Inspection) tabs: each application with its Application No. or Record No. and its status.

  Takes

  Status (optional)

  Returns

  Application No., Record No., vessel, kind of application, status

• Apply for a periodical survey

  Build this

  Opens a fleet vessel's Status (Survey) screen, selects Periodical, enters the preferred period and location in the application cart and submits it.

  Takes

  Vessel name or IMO No., preferred period, location, items not needed

  Returns

  Application No., vessel, status

Automate Customer Hub with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Weekly fleet check: due dates and expiring certificates

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  Get the Vessel List alarms for your fleet.

  Step 2

  Keep the vessels with a due date alarm or a certificate alarm.

  Step 3

  Email you the list, overdue and 30-day alarms first.

• Application status changes, posted to your system

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  Check application history in History (Survey) and History (Audit/Inspection).

  Step 2

  Keep the applications whose status changed since the last run.

  Step 3

  Post each one to your fleet management or Slack webhook.

• Monthly survey plan for the next 90 days

  Build this

  Starts

  On the 1st of every month at 7:00

  Step 1

  Get the Vessel List alarms to list the vessels in your fleet.

  Step 2

  For each vessel, get its survey status from Status (Survey).

  Step 3

  Keep the items with a due date or range date in the next 90 days.

  Step 4

  Group them by month with an AI step and email you the plan.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get Vessel List alarms” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "portal.classnk.or.jp/get_vessel_list_alarms",
    "input": {}
  }'

{
  "status": "completed",
  "data": {
    "vessels": [
      {
        "vessel_name": "Northwind Spirit",
        "due_date_alarm": "Due within 30 days",
        "certificate_alarm": "Expiring within 90 days",
        "linked_system_alarms": 0
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

Customer Hub’s own options

ClassNK publishes no API for Customer Hub. Ship in Service is a web portal, reached with your NK-SHIPS account at no additional cost, and its Settings page links it to external ship management software under a separate license agreement. NK-SHIPS also emails due dates through its Due Date Notice E-mail Service.

Read on November 12, 2026: ClassNK Customer Hub - Ship in Service -, Ship in Service operation manual, NK-SHIPS.

Signing in to Customer Hub

You sign in on ClassNK's Web Service Portal with your NK-SHIPS User ID and password, then choose Ship in Service. ClassNK issues the account after you send the Application for NK-SHIPS Internet Service to its Information Technology Department. With Fous you sign in once through that portal with your own account: the login is sealed with AES-256, and code and AI agents never see it.

Worth knowing

NK-SHIPS and e-Application end in April 2027

ClassNK discontinues NK-SHIPS, except its mobile app, and the old e-Application at the end of April 2027. Their functions move to Customer Hub - Ship in Service, which already uses the same NK-SHIPS account.

Edits stop once the survey is serviced

From Applied to Assigned an application opens in the edit screen. From Serviced on it shows the record screen and cannot be edited. The Application No. becomes a Record No. once the status is Registered.

Periodical items are filled in for you

When you apply for a periodical survey, the items are set automatically and you tell ClassNK which ones are not needed. Occasional items you enter yourself.

An application is a request, not a booking

ClassNK says e-Application does not guarantee a surveyor or auditor at the requested time. The ClassNK office in charge sends the confirmation.

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