Default = tank_profile_class {
   radius      =  9;
   shelfSize   =  5;
   
   row04    =  "        xxx        ";
   row05    =  "      xxxxxxx      ";
   row06    =  "     xxxxxxxxx     ";
   row07    =  "     xxxxxxxxx     ";
   row08    =  "    xxxxxxxxxxx    ";
   row09    =  "xxxxxxxxxxxxxxxxxxx";
};


BigTank = tank_profile_class {
   radius      =  12;
   shelfSize   =  8;
   
   row04    =  "         xxxxxxx         ";
   row05    =  "       xxxxxxxxxxx       ";
   row06    =  "      xxxxxxxxxxxxx      ";
   row07    =  "     xxxxxxxxxxxxxxx     ";
   row08    =  "     xxxxxxxxxxxxxxx     ";
   row09    =  "    xxxxxxxxxxxxxxxxx    ";
   row10    =  "    xxxxxxxxxxxxxxxxx    ";
   row11    =  "    xxxxxxxxxxxxxxxxx    ";
   row12    =  "xxxxxxxxxxxxxxxxxxxxxxxxx";
};
