USA HISTORY

Detailed explanation-1: -Types of modern merchant ship include container ships, cruise liners, oil or gas tankers, chemical carriers, bulk carriers, cable layers, ro-ro ferries, car carriers, oil rig supply vessels and general-purpose cargo ships. Their trade routes may take them to every continent and across every ocean on the globe.

Detailed explanation-2: -General cargo ships transport mainly cargo, goods, and materials from one port to another. A bulk carrier, such as a bulker or dry bulker, is a type of merchant ship that is used to transport large amounts of unpackaged bulk cargo, such as iron ore, coal, cereal, salt, aluminum, and copper ore.

Detailed explanation-3: -Merchant ships were the backbone of the American economy and culture through the nineteenth century. They carried supplies, building materials, trade goods, and luxury items to and from ports throughout the country and the globe, and they brought millions of immigrants to this country.

Detailed explanation-4: -Since the late 19th century various navies have used armed merchant ships in the role of auxiliary cruisers, also called armed merchant cruisers. Significant use of this type of ship was made by Britain and Germany in both World Wars.