5-23. When wave height observations are made, 5-29. 

 the best estimate can be obtained by 



1. positioning yourself on the super- 

 structure at a point in line with 

 wave crests, then computing the 

 distance from your position to the 

 ship's waterline 



2. using the relative heights of two 

 known points on the side of your 



ship 5-30. 



3. observing the height of waves against 

 the side of another ship in company 



4. using a floating mark 



Which of the following terms is used to 

 modify a PLATF when changes are expected 

 to occur more than once or twice during 

 the forecast period? 



1. 



OCNL 



2. 



TEMP 



3. 



INTER 



4. 



GRADU 



Which of the following codes is a route 

 forecast? 



1 . ARFOR 



2. TAF 



3. FORRO 



4. ROFOR 



Learning Objective: Recognize the 

 purpose and content of common 

 meteorological codes. 



5-24. Which of the following codes is used out- 

 side the U.S. for the same purpose as the 

 Airways code is used within the U.S.? 



1. SPESH 



2. METAR 



3. SHRED 



4. AERO 



5-25. Which of the following FM codes is used 

 to transmit synoptic reports from U.S. 

 ships? 



1. FM 21. ( ) 



2. FM 22. ( ) 



3. FM 26. ( ) 



4. FM 36. ( ) 



5-26. Which of the following codes is based on 

 the National Weather Service Aviation 

 Forecast (Terminal) code? 



1. PLATF 



2. TAF 



3. ARFOR 



4 . ROFOR 



5-27. How is a forecasted ceiling of 18,000 

 feet entered in the PLATF code? 



1. 100+ 



2. 150 



3. 180 



4. 200 



5-28. What is indicated by the use of the letter 

 "C" in a PLATF report? 



1. Wind speed is forecast to be less than 

 5 knots only 



2. Clear sky condition 



3. Wind speed is forecast to be less than 

 2 knots only 



4. Ceiling height follows 



Learning Objective: Recognize the 

 definition of terms as used in 

 satellite meteorology. 



In items 5-31 through 5-33, select from column B 

 the term that is applicable to each definition 

 listed in column A. 



B. 



Terms 



1. Perigee 



2. Apogee 



3. Ascending 

 mode 



4. Nodal 

 increment 



A. Definitions 



5-31. The point at the Equator 

 where the satellite 

 crosses from the 

 Southern to the Northern 

 Hemisphere 



5-32. The amount of turning, 

 measured in degrees 

 longitude, that takes 

 place during one nodal 

 period 



5-33. The point in orbit where 

 the satellite is farthest 

 from the earth's center 



Learning Objective: Recognize the 

 various satellite systems that are 

 utilized in the sensing and trans- 

 mitting of meteorological data. 



5-34. What is the most commonly used satellite 

 real-time data system? 



1. VISSR 



2. VHR 



3. SR 



4. VTPR 



29 



