Find the thrust experienced by a flat keel plate 10m x 2m when the draft is 8m in SW.

Solution:

 Area of the flat keel plate = (10 x 2)
                                                  = 20m2
               Pressure = (depth x density)
                                           =    (8 x 1.025)
                                          =  8.2t /m2
              Thrust = (pressure x area)
                                       = 8.2 x 20 =164 t .

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