Milan Thamsborg Factors Relating to the Passage of Deep Draught Ships Through the Baltic Approaches PDF
L. J. Antonides, J. C. Kreffer The New Netherlands Hydrographic Vessels "Buyskes" and "Blommendal" PDF
The Hydrographic Service, Port of London Polaplot : An Automatic Hydrographic Data Logging and Processing System PDF
Stejpo Kotlarić Simplification in Observation and Computation of a Two-Star Fix Without use of the Altitude Difference Method PDF
