CURRENT REPORTS
On the Current Reports to the Hydrographic Office the set and drift should be the difference between the dead reckoning position (corrected for all known errors except current) and the position determined by astronomical or other fixes.
Blank forms and envelopes may be obtained from any Branch Hydrographic Office or from the main office in Washington.
DATE ON WHICH AN OBSTRUCTION IS SIGHTED
The attention of shipmasters is invited to the fact that it is very desirable to know the date when ice and other obstructions reported by radio from ship to ship were sighted. Many reports of this kind come to the Hydrographic Office bearing only the date of the radiogram and lacking the date when the obstruction was seen. Cooperation in supplying this additional fact will assist the work of this office and will be appreciated.
SPECIAL SUBJECTS FOR INVESTIGATION
The Hydrographic Office is pursuing the following special subjects of investigation and invites reports of the same from mariners:
Port facilities, great sea waves, ocean currents, ocean routes, and value and correctness of charts.
Information relative to and blanks for reporting the same can be obtained from the Hydrographic Office or its Branch Offices.
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