The radio operator continued to broadcast these signals until an acknowledgment was received from one of the larger, more powerful coastal radio stations which immediately broadcasted the message on high power to all ships and stations for their information. The radio operators on vessels at sea which received this general warning would at once notify the captain who could thereby avoid the dangerous locality or proceed to the aid of the ship in distress. After we had arrived at Saint-Nazaire the work of the radio-room did not cease, for we kept a continuous watch, intercepting every message of importance which we were able to copy. When the _Corsair_ was ordered to proceed to Brest, it was necessary to observe the regulation which required all vessels desiring to enter that port to transmit by radio a special form of message, addressed to the port authorities, requesting permission. Failure to do so would have risked bombardment by the shore batteries. The reply from Brest stated whether or not the channel was clear of mines and enemy submarines. The radio shore station at Brest was about five miles from the American naval base and was an old type, low frequency installation. The “spark” at the time of our arrival was very difficult to read through atmospheric electrical disturbances, and did not have sufficient range. However, after the American base was permanently organized, a modern installation replaced the old one and American naval operators were placed on duty to handle all radio traffic that concerned our naval and other shipping. This was a great improvement over the early method of letting the French operators handle it. When the _Corsair_ went out on patrol duty, the radio force caught many distress calls and submarine warnings, and the information enabled the ship to render aid on several occasions. In working with the Aphrodite when we covered adjoining patrol areas, the captains were able to exchange information concerning new situations to be dealt with and to operate in concert. The messages intercepted from the British radio station at Lands End were particularly useful and the operators kept a sharp lookout for them. At least one crew of survivors of a French fishing vessel was rescued by the _Corsair_ because of a message intercepted from this coastal station.