4 A.M.
As the lieutenant had pointed out to him , the whole ice question assumed great importance , viewed in the light of the Atlantic Ice Patrol . The _ Miami _ , on orders from the department , steamed north and relieved the _ Seneca _ on duty . She picked up the bergs which the _ Seneca _ had found and plotted their positions on the chart . Every day at eight bells of the middle watch -LRB- 4 A.M. -RRB- the wireless operator on the _ Miami _ sent to the Hydrographic office a statement as to the exact position of all bergs that had been sighted and the amount of their probable daily drift . This information was sent out again as a daily ice warning to merchant vessels by the Hydrographic Bureau . -LSB- Illustration : ICEBERG WITH _ MIAMI _ IN THE BACKGROUND . Courtesy of U.S. Coast Guard . -RSB-