500 free books and technical references linked to official or openly licensed external sources.
External links only — no book files or copyrighted cover images are uploaded, hosted, copied, or resold.
An Arabic introduction to hydrographic survey stages, from line planning and depth collection to data review. Useful for outlining a survey workflow to a new team.
Open source →Use it to connect field measurements with geodetic networks and reference systems. A useful starting point when checking coordinate transformations before combining sensor data.
Open source →Covers photogrammetry, electronic measurement and error theory. Useful when planning control points and estimating accuracy for a map or model deliverable.
Open source →An Arabic introduction to organizing and analyzing spatial data in GIS. Use it when building project layers or checking coordinate-system consistency across sources.
Open source →Start here to navigate the C-13 Manual on Hydrography and find the chapter relevant to geodesy, depth measurement or tides. The contents help locate the right technical section.
Open source →Consult the international chart regulations when deciding how a feature should be represented or defining chart-production requirements. Check the edition required by the receiving authority.
Open source →Look up paper-chart symbols and abbreviations before interpreting a feature for field work or translating a chart symbol into a survey report.
Open source →Focuses on borders, graduations, grids and linear scales. Use it to review chart framing and whether coordinates and distances can be read clearly.
Open source →A companion reference for the use of chart symbols and abbreviations. Consult it for the context of a symbol after finding its basic meaning in INT 1.
Open source →Category A hydrographic surveyor competence standard. Compare an advanced training syllabus against it to identify gaps in survey design, supervision and analysis.
Open source →Category B hydrographic surveyor competence standard. Use it to assess practical training in measurement, acquisition and quality checks.
Open source →Category A nautical cartographer competence standard. Use it when assessing advanced training in chart-product planning, quality management and data validation.
Open source →Category B nautical cartographer competence standard. It helps identify foundational skills in data review, feature encoding and chart production.
Open source →Guidance for international chart and ENC schemes. Use it to review product coverage and adjacent chart boundaries when planning a series.
Open source →Addresses consistent lists of lights and fog signals. Use it when reconciling aids-to-navigation records with published information.
Open source →Reference for ocean and sea limits and names. Use it for consistent area naming in reports and charts, checking the document's current status at the official source.
Open source →A hydrographic terminology reference. Check it when a term is used differently by the survey team and client before finalizing specifications or reports.
Open source →A core reference for hydrographic survey requirements. Use it to set survey order, uncertainty, feature-detection and coverage criteria before writing the quality plan.
Open source →Guidance for consistent mariners' routeing guides. Use it when reviewing route information for coherent structure and terminology.
Open source →Specifications for ECDIS chart content and display. Consult them when checking how a navigational feature appears under a particular display setting.
Open source →The presentation library associated with S-52. Use it to interpret ECDIS colors and symbols when comparing the visual display with encoded ENC features.
Open source →A joint reference for maritime safety information. Use it to understand message structure and warnings when preparing or reviewing a navigational notice.
Open source →The S-57 transfer standard for digital hydrographic data. Use it to trace structure between a production database and delivery file or diagnose an exchange issue.
Open source →The S-57 object catalogue. Consult it when choosing the correct ENC feature class before assigning its attributes.
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