Information flowed to the engineers from three principal 

 channels: 1) the Manual; 2) "In-Betwesn" and special bulle- 

 tins: ,3) correspondence and wire communications. 



The Manual has been described in another section. "In- 

 Between" was a monthly house organ which contained items of 

 general interest, technical items, news about the work and 

 life of the men at all stations, administrative news. 



Innumerable requests for information on specific equip- 

 ment or special problems confronting individual engineers 

 were received at the New London Information Branch, Each 

 request was answered as promptly, completely and accurately 

 as possible. In many cases, members of the Information Office 

 would have to get the answers from other laboratories or 

 man uf a c t ur e r s . 



An example will illustrate how this service operated. 

 The field engineer assigned to the submarine base at Perth, 

 Australia, discovered that submariner on war patrols and 

 other operations in the Philippines area, were operating with 

 high sound levels, making them subiect to easy detection by 

 the Japanese. At first, the field engineer not only had 

 trouble in locating the source of the high sound levels, 

 but he also had trouble in persuading the submarine officers 

 to improve their beat conditions, such as rattling deck 

 slabs, vibrating plates on superstructures, squeaky shafts, 

 and noise due to wear and tear. The field engineer decided 

 that he needed a sound recorder to record the beats' sound 

 and then play it for the skippers and electronics officers. 



He cabled the hew London information engineer to rash a 

 recorder to Perth. Tc speed delivery the information engineer 

 cabled the field engineer at Pearl Earbor and asked him to ship 

 his recorder to Perth and at the same time told him that a new 

 one was being shipped from the mainland to replace the one to 

 be shipped to Perth. The sound recorder did the job expected 

 of it. The submarines operating out of Perth were significantly 

 silenced. 



- 127 



