law: Marine Insurance Act, 1963 
  72. Apportionment of valuation 
  (1) Where different
  
  species of property are insured under a single valuation, the valuation must be
  
  apportioned over the different species in proportion to their respective
  
  insurable values, as in the case of an unvalued policy. The insured value of
  
  any part of a species is such proportion of the total insured value of the same
  
  as the insurable value of the part bears to the insurable value of the whole,
  
  ascertained in both cases as provided by this Act.
  (2) Where a valuation
  
  has to be apportioned, and particulars of the prime cost of each separate
  
  species, quality, or description of goods cannot be ascertained, the division
  
  of the valuation may be made over the net arrived sound values of the different
  
  species, qualities, or descriptions of goods.