Ship (large seagoing vessel)

Characteristics and main parts

Ships are built around a hull that gives buoyancy and structural strength. Other common elements include a deck, superstructure, bridge (navigation control), engine room, cargo holds or tanks, and steering gear such as a rudder and propeller. Modern ships may also have complex systems for power generation, communications and safety.

History and development

Seafaring craft evolved from simple boats into sailing vessels and later steam- and diesel-powered ships. Advances in materials—from wood to iron and steel—and in propulsion transformed range, speed and carrying capacity. Shipbuilding developed into a major industry with specialized yards and engineering methods; modern ships benefit from industrial design, automation and international standards for safety and pollution control.

Types and common uses

Ships exist in many forms, tailored for particular roles. Main categories include:

• Cargo ships—container ships, bulk carriers and tankers that move goods and resources; cargo shipping carries a large share of global trade (international trade).
• Passenger ships—ferries and cruise ships for transport and leisure.
• Naval or warships—combat and support vessels used by navies (warships).
• Specialized vessels—fishing boats, research ships, offshore support and salvage craft.

Operation, regulation and economics

Operating a ship requires trained crew, navigation skills and adherence to international and national rules covering safety, seafarers' welfare and environmental protection. Many ships sail under flags of the country where they are registered rather than where the owners are based. Economically, shipping remains a backbone of global commerce because bulk transport by sea is efficient for heavy and large-volume goods.

Cultural and notable facts

In some maritime traditions a ship is referred to with the feminine pronoun "she"; this usage is rooted in long-standing nautical custom. Ships also figure heavily in exploration, commerce, warfare and human migration. For more general definitions and related concepts see vehicle and materials about navigation and seafaring on water.

Although the distinction between a ship and a boat can be loosely based on size and function, legal or technical definitions vary by country and context. When reading about a specific vessel, details such as tonnage, length and classification give the most reliable indication of its capabilities.