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Page Title: Current Calculations
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Current Calculations Example  of Current Problems In  the  following  example,  we  will  calculate  the  times  of  the  minimum currents  and  the  times  and  speed  of  the  maximum  currents  on  the morning  of  8  September  1993  at  a  location  known  as  Sewells  Point. All  of  the  figures  in  these  examples  are  excerpts  from  the  Tidal  Current Tables. OPNAV 3530/40 (4-73) HT OF TIDE Date Location Time Ref Station Step Action 1. 2. 3. 4. Enter  the  desired  date. Enter  the  location.  Look  up  Sewells Point  alphabetically  in  the  index  to stations.  The  index  to  stations  is located  in  the  back  of  the  Tidal Current  Tables.  Find  the  index number  (#5121)  for  Sewells  Point, note  this  number  because  you  will  use it in step 4. Enter  the  desired  time. The  reference  station  is  found  by  first finding  our  local  or  subordinate  station (Sewells  Point)  #5121,  in  table  2,  and then  look  in  the  center  of  the DIFFERENCE  column  and  follow  it upward  to  the  line  entitled  "on Chesapeake  Bay  Entrance  p.  44." Completed  Strip Form 08 SEP 93 Sewells  Point 1100 Chesapeake  Bay Entrance  p.  44 Figure  7-9.  Excerpt  from  Tidal  Current  Tables. 7-19

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