INSTRUCTIONS

Transmission of Information. — The transmission of iniormation concerning ice and derelicts is oliligatory. This information may be sent from ship to ship or to the Hydrographic Office, Washington, either in clear or by means of the abbreviations used in Part I. of this Code.

The transmission of information relating to weather is optional. Part II. of this Code may be used for this purpose, but may be modified at any time by the Meteorological Congress.

Information required :

Part I. — Ice and Derelicts.