4-22. Which  of  the  followinq  statements 4-23. 4-24. 4-25. 4-26. is valid regarding the Raytrace (RAY)  program? 1. The program uses several sound speed  profiles  simultaneously to generate a RAY diagram 2. The  program  traces  only outgoing  rays 3. The  program  calculates  RAY diagrams for flat ocean bottoms only 4. Extrapolated  data  from  sound speed profiles that do not extend to 2500 m is very accurate Which of the following inputs is/are  selectable  for  the  Passive Acoustic Propagation Loss (PPL) program? 1. Mean  water  salinity 2. Mean  water  density 3. Target  trackline  data 4. Source  and  receiver  depths Which  of  the  following  statements is  accurate  regarding  the  Passive Acoustic  Propagation  Loss  (PPL) program? 1. Convergence zone path cannot be inferred from the PPL output 2. The homogeneity of the watermass  is  not  considered when  using  the  program 3. Reliable  output  is  constrained 4. PPL is a range dependent acoustic  model The QPL program uses both the LFBL data base and the COLOSSUS data base to estimate propagation loss. 1. True 2. False Which  of  the  following  statements is accurate regarding the Near- Surface  Ocean  Thermal  Structural (NOTS)  program? 1. The program may be used in all oceanic  areas 2. The program is used to forecast changes in the upper ocean temperatures 3. Output is available in a tabular  output  only 4. Output from the program is always  unclassified 4-27. 4-28. 4-29. 4-30. 4-31. 4-32. Which  of  the  following  information may NOT be inferred from a Sound Speed Profile (SSP) module output? 1. The existence of sound channels 2. The  existence  of  convergence zones 3. The  sonic  layer  depth 4. The presence of bottom bounce Fleet  Numerical  Meteorology  and Oceanography  Center  (FNMOC), Monterey, California, reviews all Bathy  data  prior  to  retransmission in a Bathy collective. 1. True 2. False RP33 offers assistance in the ordering of MOE charts. 1. True 2. False In order for a usable convergence zone path to exist, the water column must be deeper than the limiting depth by at least how many fathoms? 1. 50 2. 200 3. 300 4. 500 Which of the following factors has a major impact on bottom bounce transmission? 1. Composition  of  the  bottom 2. Depth of the sound channel axis 3. Depth of the mixed layer 4. Strength  of  the  thermocline gradient Which of the following displays is an output from the Sonic Layer Depth  (SLD)  product? 1. A  shaded  SLD  display  expressed in  meters 2. A  shaded  SLD  display  expressed in feet 3. A  shaded  SLD  display  expressed in kiloyards 4. A  Regional  Grid  SLD  display expressed  in  kiloyards 26