1. Factual accuracy
Every numerical claim, regulation reference, formula, or specification cited on this Site must be verifiable against a published primary source. The hierarchy of sources is described in detail on the [Methodology page](/methodology). Wikipedia and trade-press articles are used for orientation only; they are never the sole citation for a regulatory or technical claim.
Where a published source disagrees with another published source, both are cited and the article notes the discrepancy. Where a regulatory text is ambiguous, the article documents the ambiguity and the editorial choice we have made.
2. Citation discipline
Every article and calculator carries a citation block. Citations link to the primary source URL where the source is online. For regulations, the citation includes the regulation's article or paragraph reference, the version date, and where applicable the unified interpretation reference. For maker spec data, the citation links the published spec sheet or product brochure.
We do not paraphrase regulations without citing them. If a sentence states a regulatory requirement, the citation is in the same paragraph or in the citations block at the bottom of the article.
3. Independence and conflict-of-interest disclosure
ShipCalculators.com is an independent publisher. We are not affiliated with the IMO, IACS, any class society, any flag administration, any engine maker, any shipyard, or any maritime trade association. We do not receive funding from any of these entities.
The Site is supported by aggregate analytics-based advertising (Google AdSense and partners). Advertising is contextual and is never permitted to influence editorial content. Where an article refers to a specific maker (for example, MAN B&W or Wärtsilä), the reference is technical and the citations are to public spec sheets or class-society type approvals; the maker has no editorial input.
Where the editor has a personal or professional connection to a topic that could be perceived as a conflict, we disclose it on the article. As of 2026-05-07 no such disclosures apply.
4. Corrections policy
Errors of fact, citation, or formula are corrected on a priority basis. Email [email protected] with the page URL and the issue. Standard handling:
- **Acknowledgement**: within two working days.
- **Verification**: independent confirmation against the cited regulation or source.
- **Correction**: pushed within 48 hours of verification, except where a deeper rewrite is required.
- **Disclosure**: every substantive correction (a numerical value, a formula change, a regulation citation) is logged in the affected article's "Change history" section. Trivial corrections (typos, link rot) are silently fixed.
5. AI-assisted drafting
Some articles are drafted with AI assistance and then reviewed and edited by a human with maritime-engineering background before publication. AI is used as a research and drafting accelerator, never as a substitute for primary-source verification or domain expertise.
Every article's claims are validated against the cited primary source by a human editor. AI-generated text that we cannot independently verify is removed before publication. Calculators are never published without their formula being checked against the regulation in source-extraction step described on the [Methodology page](/methodology).
6. Authorship
Articles and calculators are published under the ShipCalculators.com editorial collective. The Site's [Authors page](/authors) lists named contributors and their qualifications. Where an article is the work of a single contributor, the author is named at the top of the article. Where an article is a collective product (most reference and calculator pages), it is published under the editorial collective.
7. Plagiarism and attribution
We do not copy text from other publications. Where a regulation, standard, or class-society document is quoted verbatim, the quotation is enclosed in quotation marks (or formatted as a block quote) and the source is cited inline. Where a derivation in our reference articles follows a textbook, the textbook is cited.
8. Reader feedback
We do not host reader comments on this Site (no moderation pipeline; no spam-management overhead; no first-party signup data). Reader feedback is welcome via email to [email protected].