Working with subcontract surveyors: quality and audit trail
How to use subcontract surveyors without losing control: vetting, competence records, contract terms, one standard of work and the audit trail behind a figure.
Operium Solutions · Updated 30 September 2026 · 6 min read
You can work with subcontract surveyors safely if you keep three things under your own control: who is allowed to attend, to what standard they work, and a record of every value they enter. The client appointed your company, so the report is yours whoever attended; GAFTA's Code of Practice says that responsibility for a determination of conformity stays with the principal superintending company. This article is for freelancers and small firms of four to sixteen people that add outside capacity at busy times.
Why small firms subcontract, and what it puts at risk
A small firm cannot be in every port on the day a vessel arrives. GAFTA's Code lists the usual reasons: unforeseen or abnormal workload, key inspection staff being incapacitated, key equipment temporarily unfit, or part of the job being beyond the firm's own capability. Each is ordinary. The risk is that the person who attends works differently from you: a different sampling routine, a different way of rounding a sounding, a different habit of writing things down. The client sees one company name on the certificate.
Check what the contract allows before you subcontract
Your client's contract may decide the question for you.
- GAFTA. A subcontracting company must itself be on the Approved Register of Superintendents unless the principals expressly agree otherwise. The superintendent must inform the principals of its intention to subcontract and keep a register of all its subcontractors (Code of Practice, section 3).
- FOSFA. Member superintendents agree not to subcontract superintending duties to anyone other than a FOSFA-recognised member superintendent in the relevant commodity section, and then only with the principals' agreement (terms of membership, point k). The same terms require member superintendents to be independent of companies trading in the commodities (point b).
- Other clients. Read the appointment. A client that appointed you for your name may not expect somebody else at the tank.
Neither body says that a small firm may not use outside help. Both say you must tell the principals and be able to show who did what. Operium Solutions is not a member of GAFTA or FOSFA; the rules above are summarised from their published documents, which remain the authority.
Subcontractor or outsourced inspector
GAFTA's Code draws a line that matters for a small firm. A self-employed inspector who provides extra capacity is not counted as a subcontractor if three conditions hold (section 4.1):
- They are formally contracted to operate under your management system and are covered by your insurance policies.
- They comply with your training protocols.
- You audit their compliance with your quality management system, including their full understanding of the GAFTA weighing and sampling rules (Nos. 123 and 124).
You must also keep a register of these individuals (section 4.2). The consequence is practical: a freelancer you bring in under your own system becomes your responsibility in every sense, including your insurance. Check with your insurer that such people are covered before the first job, not after the first claim.
Vetting and competence records
GAFTA's standard asks a superintendent company to define the competence its staff need and to run a regular training programme for all employees, expressly including temporary, outsourced and occasional staff. Training must cover, among other things, product knowledge, the responsibilities of a cargo superintendent, load compartment inspections and health and safety including confined spaces. Written records of training, self-assessments, performance reviews and certificates have to be kept (section 2). Equipment used must be covered by a calibration programme with records of issue and receipt, including to outsourced individuals (section 3).
For a small firm, a workable competence file per person holds:
- identity and contact details, and the cargoes and inspection types they have done;
- qualifications and certificates, with expiry dates;
- a supervised first job with you or a senior, and your written assessment of it;
- the equipment they use, with calibration dates;
- proof of their own insurance, if you require it;
- a review after each job.
Shortcuts are tempting, and this file is the place where they show. If a client asks how you knew a person was competent for vegetable oil tanks, the file is your answer.
What the contract with a subcontract surveyor must say
A written agreement with each person or company, agreed before the job, should cover:
- Scope and instructions. ITIC's 2017 claims examples show that the wording of instructions can widen liability. Pass the client's instruction on exactly, and record any limit on scope.
- Standard of work. Your procedures, the applicable rules (for example GAFTA Nos. 123 and 124, ISO 5555 for oils) and your report format.
- Liability and insurance. How far the subcontractor is liable to you, and the cover they carry. Terms only work if properly incorporated into the contract, which is ITIC's point about standard terms; have a lawyer check the wording for the country that governs the agreement.
- Confidentiality. Client names, cargo details and commercial terms stay with you and the client.
- Data. If the person handles personal data such as crew names or signatures, the GDPR requires a processor to give sufficient guarantees, and staff handling personal data to be committed to confidentiality (Regulation (EU) 2016/679, Article 28). Take advice on whether Article 28 applies to your set-up.
- Records and corrections. The subcontractor hands over originals, including photographs, at the end of the job, and does not alter a report after issue.
- Independence. Where a client requires it, a statement that the person has no interest in the cargo.
Keeping one standard of work across people you do not employ
Standardise what can be standardised. One set of forms for every person, including the same tank and hold checks; one way of recording measurements; one report format; one review step before anything is signed. The sampling rules and the inspection report format are where variation does most harm, because a sampling error cannot be corrected afterwards.
Then audit. GAFTA's standard requires internal audits that include work done by subcontractors and outsourced inspectors, done by someone who is not auditing their own work, and with non-conformances followed up (section 8.4). A small firm can do the same in proportion: re-read the first three reports of a new person before issue, and keep sampling their reports afterwards.
The audit trail when a client questions a figure
A client may query a weight, a temperature or a date months after the job. You then need to show who entered the value, when, on what instruction, and whether it was changed later. GAFTA's standard points the same way. The report must reflect the actual and true findings; internally produced records must be signed by the person who carried out the task, or, where kept electronically, carry that person's name; corrections after issue must be recorded; and records are kept for at least seven years unless other requirements apply (section 9). The report itself must name any subcontractors used and identify their results as theirs (section 9.2), so a hidden subcontractor is a breach, not a convenience.
A folder of emailed spreadsheets does not give you that. You cannot tell which version was the last, and you cannot show who typed a number. Software that helps with subcontractor management is worth judging on this one point: does every entered value carry a name and a time, and can you see the history?
Practical rule
Give every subcontract surveyor the same one-page job sheet and have them enter their values into your system or your form the same day, with their name on each entry. If they will not, you cannot defend the figure later.
Run your survey company on FOSS
FOSS, the Field Operational Services System, keeps an audit log per entered value, so you can answer "who entered what" for your own staff and for people you bring in. It carries the job from nomination to certificate, lets you enter values offline on board, applies the calculation methods used in the sector, and produces reports in your own house style. Run your survey company on FOSS: see how it works.
Frequently asked questions
Can a GAFTA approved superintendent subcontract part of an inspection?
Yes, within limits. Under GAFTA's Code of Practice the subcontracting company must be on the Approved Register of Superintendents unless the principals of the contract expressly agree otherwise, the superintendent must tell the principals of its intention to subcontract, and it must keep a register of all its subcontractors. Responsibility for the determination of conformity stays with the principal superintending company.
What is the difference between a subcontractor and an outsourced inspector?
In GAFTA's Code of Practice a self-employed inspector engaged for extra capacity or expertise is not treated as a subcontractor if he or she is formally contracted to operate under your management system and covered by your insurance policies, follows your training protocols, and is audited by you, including on the GAFTA weighing and sampling rules. The principal company must keep a register of these individuals too.
Does FOSFA allow a member superintendent to subcontract?
Only narrowly. FOSFA's terms of membership for member superintendents say they agree not to subcontract superintending duties to anyone other than a FOSFA-recognised member superintendent in the relevant commodity section, and then only with the agreement of the principals.
Who is liable when a subcontract surveyor makes a mistake?
Towards the client, normally you, because your company issued the report. GAFTA's Code of Practice says so explicitly for conformity determinations. What you can do is agree with the subcontractor, in writing, how far it is liable to you, and require it to carry insurance that supports that promise.
What records should I keep per subcontract job?
The instruction, who was assigned and on what competence record, the entered values with who entered them and when, the report and any corrections after issue. GAFTA's standard asks for internally produced records to carry the name of the person who did the task and to be kept for at least seven years unless other requirements apply.
Further reading
Sources
- Gafta, Approved Register of Superintendents Code of Practice, Version 3.0 (December 2021), effective from 1 January 2022, sections 3 (Sub-contracting), 4 (Outsourcing) and 5.1 — https://www.gafta.com/media/dn1jcxgv/gafta_code_of_practice_superintendents_v30_december_2021.pdf
- Gafta, Standard for Supervision, Sampling & Check Weighing, Version 7.0 (2019), sections 1.9 (Insurance), 2 (Personnel and training), 3 (equipment calibration), 8.4 (Internal audit) and 9.1, 9.2, 9.6, 9.7 (Reporting and record keeping) — https://www.gafta.com/media/0cljjtmi/gafta_standard_for_superintendents_guide_web.pdf
- FOSFA International, Code of Practice for Member Superintendents, revised 1 November 2022: Terms and Conditions of Membership, Member Superintendents (b) and (k), and Part One sections 2.1–2.6 — https://www.fosfa.org/wp-content/uploads/2025/04/Revised-Code-of-Practice-Nov-2022-Complete.pdf
- ITIC (International Transport Intermediaries Club), The Wire 2017: Marine Surveyors and ITIC, scope of instructions and incorporation of standard terms (2017) — https://www.itic-insure.com/fileadmin/uploads/itic/Documents/Marine_surveying_wire_2017.pdf
- European Union, Regulation (EU) 2016/679 (General Data Protection Regulation), Article 28, Processor (2016) — https://eur-lex.europa.eu/eli/reg/2016/679/oj
