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home_work Technical Standards Hub / Hydrographic Standards / IHO S-44 6th Edition (KSA Annex)
International Hydrographic Organization & GEOSA
verified HYDROGRAPHIC STANDARDS KSA-GRF17 / UTM Zones 36N-39N Chart Datum (CD) / LAT

IHO S-44 Standards for Hydrographic Surveys: KSA Maritime Implementation

Standard governing soundings, bathymetry, horizontal position accuracy, and total propagated uncertainty (TPU) for port operations, dredging QA/QC, and nautical chart production in Saudi territorial waters.

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Author & Peer Lead Sovereign Marine Hydrography Desk Principal Geomatics Director
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Sovereign Validation IHO S-44 6th Edition (KSA Annex) Standard Audit Pass
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Effective Date June 10, 2024 Annual Recalibration
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Document Depth 9 min technical read Formulas & Tolerances
01

Classification of Survey Orders (Special, 1a, 1b, 2)

Port berths and critical navigation channels (King Fahd Port Jubail, King Abdulaziz Port Dammam, Yanbu) strictly require Special Order bathymetry with 100% seafloor feature detection > 1m cube.

02

Total Propagated Uncertainty (TPU) Computations

Detailed vertical uncertainty calculations incorporating real-time vessel heave, pitch, roll, dynamic draft, tide gauge telemetry, and sound velocity ray-tracing.