The merchant navy is the civilian, commercial shipping fleet that moves goods and sometimes passengers around the world by sea, and it is separate from a country’s war-fighting navy.

What the merchant navy is

  • The merchant navy (also called the merchant marine) is the part of a country’s shipping industry made up of non‑military, commercial ships.
  • These ships include container vessels, tankers, bulk carriers, car carriers, passenger ships and other specialised ships used for trade and transport, not combat.

What the merchant navy does day to day

  • Its core job is to transport cargo such as food, fuel, raw materials, manufactured goods and sometimes passengers between ports across the world’s sea routes.
  • Cargo may be in containers, loose bulk (like coal or grain) or liquids and gases carried on specially designed tankers.

Why the merchant navy matters

  • Modern global trade depends heavily on it, with a large majority of world trade by volume moving by sea on merchant ships.
  • Without this system, international supply chains, from supermarket goods to industrial materials, would slow dramatically or break down, damaging economies and everyday life.

Role in war or emergencies

  • In peacetime, merchant fleets operate as normal commercial businesses, carrying freight and passengers under civilian contracts.
  • In many countries, these ships and crews can be requisitioned or organized to support the armed forces in wartime by carrying troops, fuel, weapons and supplies, acting as an auxiliary to the navy.

Jobs on merchant navy ships

  • Crews include officers and ratings in departments such as deck (navigation and cargo), engine (machinery and power), and catering/hospitality on passenger ships.
  • Typical roles range from navigational officers and engineers to electricians and support staff who keep the ship safe, operational and compliant with maritime regulations.

TL;DR: The merchant navy is the commercial shipping workforce that keeps global trade moving by sea, carrying most of the world’s goods and some passengers, and in some situations supporting military logistics without being a combat force.