Ore-bulk-oil carrier facts for kids
An ore-bulk-oil carrier, also called a combination carrier or OBO, is a ship that carries wet or dry cargo. The idea is to reduce the number of empty voyages in which large ships carry cargo one way and are empty for another.
OBO carriers are today not as common as in the 1970s and 1980s.
Ore-bulk-oil carrier Facts for Kids. Kiddle Encyclopedia.