M. Calder Calibration of Echo Sounders for Offshore Sounding Using Temperature and Depth PDF (English)
Milan Thamsborg Factors Relating to the Passage of Deep Draught Ships Through the Baltic Approaches PDF (English)
B. W. Burton, J. Duhaut Progress with Air Photography from Helicopters for Hydrographic Work PDF (English)
L. J. Antonides, J. C. Kreffer The New Netherlands Hydrographic Vessels "Buyskes" and "Blommendal" PDF (English)
The Hydrographic Service, Port of London Polaplot : An Automatic Hydrographic Data Logging and Processing System PDF (English)
Hubertus Wentzell The Atlas Bottom Mapping Recorder for Gapless Surveying of Inshore Waterways PDF (English)
Stejpo Kotlarić Simplification in Observation and Computation of a Two-Star Fix Without use of the Altitude Difference Method PDF (English)
