February 2005 IHO Manual on Hydrography 1 of 9

Chapters

1 Principles of hydrographic surveying, including specs

�2 Positioning

�3 Depth determination: principles & techniques

�4 Sea floor classification & object detection

�5 Water levels and flow

�6 Topographic surveying applied to hydrography

�7 Structured details of hydrographic practice

�Annexes, Acronyms, Bibliography etc.

540 pages total

New IHO Manual on Hydography

February 2005 IHO Manual on Hydrography 2 of 9

1 Principles of hydrographic surveyingSurvey specifications

Survey planning

Data gathering

Data processing

Data analysis

Data quality

Data quality presentation (reliability diagrams, ZOCs)

Data production

Nautical information system (compilation, presentation)Zafaryab (Pakistan) 26 pages

February 2005 IHO Manual on Hydrography 3 of 9

2 PositioningPrinciples (the earth, datum, coordinate systems,

cartography, projections)

Horizontal control (triangulation, trilateration, traverse, photogrammetry)

Levelling (geometric, trigonometric, GPS)

Instruments for control (GNSS, electronic, optical)

Positioning methods (GNSS, radio, acoustic, optical)

Lamberti & di Lieto (Italy) & Lawrence (UK) 85 pages

February 2005 IHO Manual on Hydrography 4 of 9

3 Depth DeterminationAcoustics (characteristics, sound speed,

propagation, parameters)

Motion sensors (inertial principles, RPH sensors, heading)

Transducers (principle, beamwidth, single & multi, mounts)

Acoustic systems (single beam, swath)

Non-acoustic systems (LIDAR, electromagnetic, photbathymetry, lead line, sweep)

Freitas (Portugal) 81 pages

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4 Seabed classification / feature detectionFeature detection (requirements, methods: sidescan,

MBES, magnetometer, sweeps, other)

Seafloor characterization (principles, theory, methods)

Johnson (Australia) 54 pages

February 2005 IHO Manual on Hydrography 6 of 9

5 Water levels and flowTides (theory, support functions, methods: planning,

zoning, operation, processing, datum computation, tide reducers, KGPS)

Currents (principles, measurement, prediction)

Mills & Gill (US) 48 pages

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6 Topographic surveyingTopography, coastline delineation, AtoN positioning

(specs, methods, coastal & harbour land surveys)

Remote sensing (photogrammetry, non-photogrammetric; satellite sensors, image processing)

Mayer & Salgado (Argentina) 108 pages

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7 Hydrographic practiceSurvey planning (requirements, horizontal & vertical control,

sounding and sampling, coastine, other, teamwork, data compilation, checking, rendering, scheduling, costs, liason)

Reconnaissance (general, geodetic, tidal)

Data acquisition (horizontal & vertical control, environment, line layout - cross, main, inter & exams)

Coastline delineation (detail required, drying line, land heights, foreshore, coastline, air photos)

Data processing (bathymetry, feature detect, ancillary)

Data rendering (ROS, data required, format, density, media)

Wilson & Wyatt (UK) 74 pages

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AppendicesSurvey planning & estimation guide

Horizontal positioning systems & selection criteria

Bandwidth classification of radiopositioning systems

Radiopositioning systems in the field

System diagrams

Specimen report of survey