Boom 



Gyro heading-90* 



Gyro heading 



Gyro heading+90' 



Figure 5. Simplified diagram of a ship used as an observation platform. 

 Shipboard observations were made near the flying bridge (A) 

 on the Mt. Mitchell and Rainier and along the rail aft of the 

 balloon shelter (B) on the Oaeanoarapher . Discoverer , and 

 Bockauau ■ Winds blowing across the internal heat source (C) 

 or across the heated decks toward the boom could possibly 

 contaminate the environment being sensed by the boom instru- 

 ments. BOMEX Period III, June 19 - July 2, 1969. 



27 



