Obituary Notices: Admiral Sir Mostyn Field (1855-1950), Commodore H. O. Ravn (1868-1949), Professor Martin Knudsen (1871-1949) PDF (English)
Luang Joldhan Brudhikrai Development of Hydrographic Work in Siam from the beginning up to the present PDF (English)
Silvio Ballarin Geometric Properties of Position Lines in Hyperbolic Navigation and their Layout on the Reference Ellipsoid PDF (English)
Regulations prescribed by the "Service Hydrographique” of the French Navy for the Carrying-out of Soundings to be used for further Improvement of the Chart PDF (English)
Haven Nichols Hints to Hydrographic Surveyors: Obtaining a Fix with no Common Centre Object PDF (English)
