What is definitions of Product tankers ?

Product tankers Carry refined oil products that can be classified into two  main groups:

1. White products (Diesel oil, gasoline, jet fuels, kerosene, lube oils, etc.)
2. Black products (fuel oils, residual products)

• Clean cargo tanks characterized by:
  1. – No structural elements inside the cargo space (double skin)
  2. – Corrugated bulkheads (transverse and longitudinal)
  3. – Cargo tanks painted or internally coated
• Each cargo tank is provided with a segregated cargo system including a submersible pump and its own cargo line to the manifold, on deck
• The number of possible cargo segregations on board is equal to the number of cargo tanks
• Typically these tankers are smaller than the crude oil tankers, with DW < 70,000 t