VIP Exclusive
CH Certified Hydrographer VIP Practice Exam
CH — The Certified Hydrographer (CH) credential is issued by the National Society of Professional Surveyors (NSPS); the exam covers approximately 100–150 questions across hydrographic surveying principles, tides/datums, positioning, acoustic systems, data processing, and IHO standards, with a 4-hour time limit and a 70% passing threshold.
30
Questions
240m
Time Limit
70.00%
To Pass
Question 1 of 30👑 VIP
You are conducting a bathymetric survey in a tidal estuary and need to reduce your soundings to chart datum. The National Tidal Datum Epoch currently in use by NOAA for the contiguous United States is based on which 19-year period?
Questions 2–30 and full explanations are VIP-exclusive.