3-60. 3-61. 3-62. 3-63. 3-64. 3-65. 3-66. Who determines the full-power rpm requirements  for  a  ship  that  is  running a  full-power  trial? 1. The  chief  observer 2. The  type  commander 3. BUSHIPS 4. The  Chief  of  Naval  Operations Question 3-61 is to be judged True or False. Before  the  official  full  power  trial period  starts,  the  ship  is  normally operated  at  full  power  long  enough  to permit  all  readings  to  become  constant. An  economy  trial  is over a period of normally    conducted 3-67. When  a  minimum  draft  has  NOT  been specified  by  trial  requirements,  the liquid  loading  should  NOT  be  less  than what  percentage  of  the  full  load capacity? 3-68. 1. 25% 2. 50% 3. 75% 4. 90% When  should  the  chief  observer  determine the ship's draft and trim for a trial? 1. Before  and  after  the  trial 2. At the middle of the trial 3. At the start, middle, and end of the trial 4. Every hour of the trial 1. 6 hr 2. 5 hr 3. 3 hr 4. 4 hr Question 3-63 is to be judged True or False. 3-69. A  competitive  trial  report  normally includes  data  on 1. condenser  water  injection  and discharge   temperatures 2. consumption  of  fuel  oil  per  hour 3. bearing  clearances  before  and  after the  trial When  a  ship  fails  a  performance  trial, 4. ship's  trim  under  full  power the  type  commander  may  specify  a  retrial which he deems appropriate to, demonstrate 3-70. How  often  are  readings  taken  and  recorded satisfactory   engineering   readiness. during  an  economy  trial? Which  of  the  following   actions is NOT a duty  of  the  assistant   chief  observer? 1.  Taking  counter  readings 2.  Supervising  the  engineroom  observers 3.  Checking  tank  soundings 4.  Checking  fuel  oil  meter  readings 3-71. Which  of  the  following  personnel  makes out  the  economy  trial  report? 1. Commanding   officer 2. Chief  observer 3. Assistant  chief  observer 4. The  assistant  observers What  information  should  be  furnished  in writing  to  the  chief  observer  prior  to the start of a full power trial? 3-72. 1. Date  of  last  undocking 2. Dates  of  last  testing  of  all machinery  safety  devices 3. Authorized  and  actual  settings  of all  main  machinery  safety  settings 4. All of the above 1. Every  half  hour 2. Every  hour 3. At the start and end of the trial 4. At the start, middle, and end of the trial A  ship  undergoing  a  4-hour  full  power trail  is  equipped  with  a  torsionmeter for measuring shaft horsepower. To determine  the  power  being  developed, how  many  observations  should  be  taken? 1. At  least  one  during  the  trial 2. At least two during the trial 3. At least one each hour 4. At least two each hour Which  of  the  following  is  NOT  a  responsi- bility  of  engineering  department personnel  during  an  engineering  trial? 1. To  provide  observers  with  a  written statement of the date of the ship's last  undocking 2. To  ensure  that  clocks  are synchronized  in  all  engineering spaces  and  on  the  bridge 3. To  provide  the  usual  "housekeeping" and auxiliary  loads 4. To  check  the  setting  of  machinery safety  devices 21