The density of skin flora depends on region of the skin.
*10,000–24,999: Splošni tanker (General Purpose tanker)*25,000–54,999: Srednji tanker (Medium Range tanker)*55,000–79,999: Long Range 1 (LR1)*80,000–159,999: Long Range 2 (LR2)*160,000–319,999: Very Large Crude Carrier (VLCC)*320,000–549,999: Ultra Large Crude Carrier (ULCC)Okrog 380 tankerjev je med 279.000 in 320.000 ton nosilnosti (VLCC velikosti), in so najbolj popularni.