Ore-bulk-oil carrier

Rarity: Common

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At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

1

In collections

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What Wikipedia says

An ore-bulk-oil carrier, also known as combination carrier or OBO, is a ship designed to be capable of carrying wet or dry cargoes. The idea is to reduce the number of empty (ballast) voyages, in which large ships only carry a cargo one way and return empty for another.

Excerpt from the Wikipedia article “Ore-bulk-oil carrier”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Hervé Cozanet, CC BY-SA 3.0, via Wikimedia Commons.