Page 152 - Practical Ship Design
P. 152

Weight-Bused Designs                                                119

        A-    -~~            ~~               Consumptions, deadweight
                  ~~-
                       B
              Data, “first” design
                                              appendage disp                   ,
                               -
         7    date                            consumptions etc.
         8    design no
         9    ship type                       range
         10   service speed - Vk              miles per day
         11   deadweight                      days at sea
         12   dwt/disp ratio - Kd             days in port
         13   disp -                          oil fuel/day at sea
                    A
         14   cargo capacity - Vr             oil fuel/day in port
         15   cap. ab upper dk - Vu           diesel/day at sea
         16   cap. ratio = (Vr - Vu)/Vh       diesel/day in port
         17   mld vol       -Vh               fresh waterlday
         18   UB
         19   B/D
         20   T/D                             oil fuel
         21   r (fb = 1.025)                  diesel oil
         22   (1 +SI                          fresh water
         23   L based A                       engineers tanks
         24   or L based Vh                   stores
         25   Fn = 0.164 VU&                  crew and effect
         26   Cb                              spassengers etc.
         27   d(Cb) = (1 - Cb)(.8D - T)/3T     swimming pools
         28   Cbd                              cargo
         29   iterate b23..b28                water ballast
         30   L                               ~-
         31   B                               total deadweight   ~~   7
         32   T
         33   D
                                               shell                            I
                                               stern
         36                                    propeller(s)
         37   All formulae shown are built
         38   into the adjoining column.
              Other formulae from book are     stabilisers
                                               thrusters (lost buoy.)
         41   Much of the data required is          ~   ~-        ~~~
         42   given in the book.               total appendage dispt




                          Fig. 4.19(a).  Spreadsheet for merchant ship design.
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