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Is this shipping company invitation real? Check for edits and AI fakes

A shipping company invitation is what turns a seafarer's flight into a crew change. It names the vessel, the port and the date the seafarer is due to join, and it commits the company to the cost of getting them home again if the joining fails. That repatriation undertaking is the part consulates read most closely, because it is the reason a seafarer visa carries less risk than a visitor one. TamperCheck examines the letter for details rewritten after it was issued.

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Most edited
  • vessel and port details
  • seafarer identity
  • repatriation undertaking
  • company letterhead
Reviewed by
Consulates assessing Schengen seafarer visa applications

Where forgers attack a shipping company invitation

  1. Vessel details that do not belong together

    A ship's name, flag and IMO number are combined from different sources, or the number is invented outright. The IMO number carries a check digit and ship registers are public, so a vessel that is not where the letter places it, or that holds a different number, is a plain contradiction.

  2. Repatriation undertaking weakened or removed

    The clause committing the company to the seafarer's return costs is the clause that matters, and in copied letters it is often missing, truncated, or lifted verbatim from another company's template in a register of English the rest of the letter never uses.

  3. Seafarer identity replaced

    A genuine joining letter is reissued with a different name, passport and book number, selling a crew change to somebody with no berth. The replaced fields disturb the alignment of the identity block while the vessel details, the signature and the letterhead stay exactly as they were issued.

  4. Joining dates moved

    The joining date is pushed back to fit a later flight, or brought forward to match a booking already made. The vessel's stated position and the disembarkation date are normally left alone, which leaves the ship making an implausible passage between the two ports named.

  5. Manning agent letterheads copied

    Agency headers, stamps and signatures are taken from published circulars and applied to fabricated letters. The header shows the artefacts of a web image dropped into a word processor, and the signature repeats without variation across letters supposedly signed weeks apart.

  6. Invitations assembled from templates

    Complete letters generated from a form, naming a real vessel, a plausible agent and a correctly worded undertaking. Nothing inside disagrees with anything else, so these are separated by how the page was produced rather than by what it says.

Questions people ask about a shipping company invitation

How do consulates verify shipping company invitations?

They contact the company or its manning agent to confirm the crew change, then test the letter's internal logic: the vessel's position against the joining port and date, the entry airport against the route to that port, and the seafarer's passport and seaman's book numbers against the documents filed. The repatriation undertaking is read to see whether the company has genuinely accepted the liability.

What is a shipping company invitation for a visa?

It is a letter from a shipowner or manning agent confirming that a named seafarer is joining a named vessel, stating the ship's details and position, the port and date of joining, the intended disembarkation, the entry airport and the local agent, and undertaking to bear repatriation costs. It is the core document in a Schengen seafarer or crew-change application.

What is an IMO number and why does it matter here?

An IMO number is a permanent seven-digit identifier assigned to a ship, with a check digit as its final figure, and it stays with the vessel even when the owner, the name or the flag changes. On a joining letter it is the field that cannot be talked around: it either belongs to the ship named beside it or it does not.

Can an edited joining letter be detected?

Yes. Replaced identity fields disturb the alignment and rendering of the block they sit in while the letterhead, stamp and signature stay exactly as issued, and an altered joining date leaves the vessel's stated position implausible against the ports listed. TamperCheck reports each finding against the region of the letter it came from, on published per-document pricing.

Where does a forensic review of a shipping company invitation start?

On a shipping company invitation, the review prioritises the seafarer's identity; the vessel name, flag and IMO number; and the boarding and disembarking ports and dates. After those, the checks that run on every document cover the rest of a shipping company invitation.

What do forgers change on a shipping company invitation?

Usually vessel and port details, seafarer identity, and repatriation undertaking. Those are what a visa officer reads to judge purpose and duration, so a forger edits them on a genuine shipping company invitation or builds a new one around them from a template.

How do I verify a shipping company invitation with the supplier?

Contact the airline, hotel or agency named on a shipping company invitation using details you found yourself, and ask them to confirm vessel and port details and the dates. If the supplier has no record of it, a shipping company invitation was almost certainly fabricated.

Can I check a shipping company invitation for free online?

You can run the manual checks on this page for free, starting with vessel and port details and seafarer identity. Pixel-level and file-structure analysis of a shipping company invitation needs forensic tooling, which TamperCheck provides on published per-document pricing.

Anatomy of a genuine shipping company invitation

The invitation is issued on the shipping company's or manning agent's letterhead and identifies the seafarer by full name, date of birth, nationality, passport number and seaman's book number, with the validity of both. It then identifies the ship: name, flag state, IMO number and current or expected position. The operative detail is the crew change itself - the port and date of joining, the expected port and date of disembarkation, the airport and date of entry to the Schengen area, and the local agent meeting the seafarer. It closes with a signed undertaking to bear repatriation costs.

The letter only works if its dates and its geography hold together. The entry date has to precede the joining date by a plausible margin, the entry airport has to make sense as a route to the joining port, and the vessel has to be capable of being in that port on that date given the position stated higher up the page. The seafarer's passport and book numbers have to match the documents filed with the application, and both have to stay valid past disembarkation. The IMO number is a seven-digit identifier with a check digit that stays with a ship for life, even when the name and flag change.

Visible warning signs in a shipping company invitation

  • Vessel and port details that are set in a slightly different hand

    Zoom in on the vessel and port details and compare weight, spacing and edge sharpness with the lines above and below it. A substituted value is rarely typeset exactly like the original, even when the typeface name matches.

  • A repatriation undertaking that reads right but renders oddly

    Zoom in on the repatriation undertaking and look at the background behind the characters. Edits often leave a faint halo, a patch of slightly different texture or spacing that was fine at full-page view.

  • Sender details that cannot be reached

    Invitation and sponsor letters should be reachable through an independently found address or number, not just the ones printed on the page.

  • Templates shared across unrelated applicants

    Itineraries, bookings and invitations built from the same template turn up across applications. Compare against previous submissions.

  • A booking reference that does not exist at the supplier

    Check the reference with the airline, hotel or agency directly. A convincing layout with a reference no one recognises is a classic fake.

How to check a shipping company invitation step by step

  1. 1. Check the fields against each other

    Read vessel and port details, seafarer identity, and repatriation undertaking together rather than one at a time. Forgers typically change one value and leave the rest of the document describing the original.

  2. 2. Inspect the file metadata

    Open the document properties and look at the producer, creation date, and modification date. A document produced by a consumer PDF editor, or created long after the date printed on its face, is worth a closer look.

  3. 3. Ask for a second document

    Request a corroborating document from the same issuer or an adjacent period. Forgery effort concentrates on one file, so inconsistencies surface as soon as there are two to compare.

  4. 4. Run a forensic check

    Manual review catches obvious edits but not field-level pixel manipulation or synthetic generation. TamperCheck runs 200+ forensic checks on a shipping company invitation and returns a risk score from 0 to 100 within seconds, on published per-document pricing.

The forensic checks that matter most for a shipping company invitation

  • Letterhead, logo, and issuer plausibility

    Issuer branding is checked for resolution and compression consistency against the body text it sits on. A logo lifted from a website carries the signature of its source, not of the document.

  • Reference and document number checks

    Document, account, and reference numbers are checked for issuer format conformance and against every other place the same value appears on the page.

  • Date and validity consistency

    Issue, expiry, and period dates are checked against one another and against the file's own creation metadata, which catches backdating and validity extension.

  • And many more checks

    The three above are the layers that carry the most weight on a shipping company invitation. Every upload runs the full suite of 200+ checks regardless of document class, spanning file structure and metadata, pixel-level forensics, font and text rendering, optical and print characteristics, provenance signals, AI-generation signatures, and many more checks.

Check a document

Upload a PDF or a photo of shipping company invitation. TamperCheck returns a risk score from 0 to 100 and marks the region that was edited, usually within seconds.

For developers, the API class is shipping_company_invitation. See the API and MCP documentation.

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