On  ships  that  are  not  governed  by  EOSS,  the warming-up  schedule  is  mandatory. SECURING SCHEDULES Securing  schedules  for  propulsion  machinery  and boilers are chronological checklists of key steps. They are used to secure the ship’s main engineering plant according  to  the  general  degree  of  readiness  in  effect. The  respective  steps  may  be  scheduled  relative  to  the time orders are received to secure the engine room or boiler. The securing schedules should list the auxiliary machinery   to   be   used   after   securing   the   main engineering  plant.  The  securing  schedule  must  be according   to   the   type   commander’s   directives.   A securing schedule overcomes the normal tendency to secure  machinery  too  quickly.  Securing  schedules should be used without regard for the experience of the personnel  involved.  The  engineer  officer  examines completed  securing  schedules  and  disposes  of  them according  to  the  type  commander’s  directives. Securing  schedules  are  not  required  for  ships govered by EOSS, but they are mandatory on all other ships. PERFORMANCE  STANDARDS CNO  and  the  type  commanders  require  certain engineering trials and inspections to determine that standards are being met and to evaluate the operational readiness  of  ships  of  the  type.  CNO  and  the  type commanders   determine   the   frequency   of   the engineering  readiness  trials  and  inspections. Engineering  readiness  trials  include  full-power trials,   fuel-economy   trials,   and   basic   engineering casualty  control  exercises  (BECCES).  BECCES  serves the  same  purpose  as  engineering  operational  casualty control (EOCC) which will be discussed at the end of this  chapter.  Readiness  inspections  include  the administrative inspection, the material inspection, and the  operational  readiness  inspection. ENGINEERING READINESS TRIALS Engineering   readiness   trials   (full-power   and fuel-economy   trials)   are   required   by   CNO   and prescribed in  Ship Exercises,  FXP3, and in the type commander’s   directives,   which   contain   specific requirements   for   the   exercises   and   trials.   The commanding  officer  conducts  these  trials  periodically according to those instructions. The type commander, a commander subordinate to the type commander, or the task force commander may assign observers for the engineering  trials.  These  observers  will  come  from another ship of the same type whenever practical. There may be times when it is impractical to provide observers from  another  ship.  In  those  cases,  personnel  from  the ship conducting the trial may act as observers subject to the   type commander’s    requirements for self-observation of trials. The  number  of  personnel  assigned  to  observe engineering trials will vary according to the trial and the size and type of ship being observed. The duties of the observing party are usually as follows: . The chief observer will organize, instruct, and station the observing party. He checks the ship’s draft, either at the beginning of the trial or before leaving port; supervises  the  performance  of  the  engine-room observers; checks the taking of counter reading; renders all  decisions  according  to  current  directives;  and  checks and signs the trial report. l  The  assistant  chief  observer  helps  the  chief observer as directed; supervises the performance of the fireroom  observers;  checks  the  taking  of  fuel  oil soundings and meter reading; and makes out the trial report. l Assistant observers review fuel soundings and meter readings, counter readings, the ship’s draft, and other data as may be required for the trial report. The  following  items  should  be  accomplished  or considered  before  starting  the  trial: . When requested by the observing party, the ship being observed provides a signaling system that will allow fuel soundings and the readings of counters and meters  to  be  taken  simultaneously. . The ship being observed will furnish the chief observer with a written statement of the date of last undocking, the authorized and actual settings of all main machinery  speed-limiting  devices  and  the  status  of safety device test and inspections. The ship’s draft, trim, and loading must conform to trial requirements. In case a minimum draft is not specified, the liquid loading should equal at least 75 percent of the full-load capacity at the beginning of the trial. . The chief observer determines draft and trim before and after the trial. He verifies the amount of  fuel on board and corrects the amount to the time the trial begins. He determines the full-power rpm required for the displacement and injection temperature existing at the start of the trial. 4-6