Ship Building

Extracted Attributes

• Definition

  Construction of ships and other floating vessels

• Related Field

  Naval engineering (includes ship repairs)

• Modern Materials

  Steel, Wood, Composites

• Primary Location

  Shipyard

• Historical Materials

  Wood, Iron, Steel

• Historical Significance

  Often represented the most advanced structure a society could produce

• Modern Construction Technique

  Prefabricated modular sections (block construction)

• Related Activity (dismantling)

  Ship breaking

• Industrial Innovations Driven By

  Mechanical saws, early use of logarithms for hull design

• Largest Segment by Tonnage (2019)

  Tankers (15,000 built, 13 million gross tonnage)

• Historical Construction Techniques

  Shell-first, Clinker, Carvel

• Related Activity (smaller vessels)

  Boat building

Timeline

• Earliest evidence of maritime transport by modern humans (settlement of Australia), likely involving rafts. (Source: Wikipedia)

  50000 BCE - 60000 BCE

• Ships built using shell-first technique, joining hull planks edge to edge with tenons in mortices. (Source: Wikipedia)

  Ancient Egypt

• Mediterranean shipbuilding used a similar shell-first technique with tenons pinned by dowels. (Source: Wikipedia)

  Classical Antiquity

• Dutch shipyards developed mechanical saws propelled by windmills to saw timbers. (Source: Wikipedia)

  Early 17th century

• Early adoption of logarithms (invented this year) to generate hull curves in design. (Source: Wikipedia)

  1615

• North-European and Mediterranean shipbuilding traditions merged; carvel construction adopted in the North; center-line mounted rudder replaced quarter rudder; three-masted ship became common. (Source: Wikipedia)

  Late 15th century

• Iron introduced as structural components (e.g., iron knees) beyond fastenings. (Source: Wikipedia)

  Mid-18th century

• Entire ships began to be made of iron, and later steel. (Source: Wikipedia)

  Mid-19th century onwards

• California Forever plans to develop new shipyards on the West Coast to address national security concerns and manufacturing disparity. (Source: Related Documents)

  Contemporary

Shipbuilding

Shipbuilding is the construction of ships and other floating vessels. In modern times, it normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to before recorded history. Until recently, with the development of complex non-maritime technologies, a ship has often represented the most advanced structure that the society building it could produce. Some key industrial advances were developed to support shipbuilding, for instance the sawing of timbers by mechanical saws propelled by windmills in Dutch shipyards during the first half of the 17th century. The design process saw the early adoption of the logarithm (invented in 1615) to generate the curves used to produce the shape of a hull, especially when scaling up these curves accurately in the mould loft. Shipbuilding and ship repairs, both commercial and military, are referred to as naval engineering. The construction of boats is a similar activity called boat building. The dismantling of ships is called ship breaking. The earliest evidence of maritime transport by modern humans is the settlement of Australia between 50,000 and 60,000 years ago. This almost certainly involved rafts, possibly equipped with some sort of sail. Much of the development beyond that raft technology occurred in the "nursery" areas of the Mediterranean and in Maritime Southeast Asia. Favoured by warmer waters and a number of inter-visible islands, boats (and, later, ships) with water-tight hulls (unlike the "flow through" structure of a raft) could be developed. The ships of ancient Egypt were built by joining the hull planks together, edge to edge, with tenons set in mortices cut in the mating edges. A similar technique, but with the tenons being pinned in position by dowels, was used in the Mediterranean for most of classical antiquity. Both these variants are "shell first" techniques, where any reinforcing frames are inserted after assembly of the planking has defined the hull shape. Carvel construction then took over in the Mediterranean. Northern Europe used clinker construction, but with some flush-planked ship-building in, for instance, the bottom planking of cogs. The north-European and Mediterranean traditions merged in the late 15th century, with carvel construction being adopted in the North and the centre-line mounted rudder replacing the quarter rudder of the Mediterranean. These changes broadly coincided with improvements in sailing rigs, with the three masted ship becoming common, with square sails on the fore and main masts, and a fore and aft sail on the mizzen. Ship-building then saw a steady improvement in design techniques and introduction of new materials. Iron was used for more than fastenings (nails and bolts) as structural components such as iron knees were introduced, with examples existing in the mid-18th century and from the mid-19th century onwards. This was partly led by the shortage of "compass timber", the naturally curved timber that meant that shapes could be cut without weaknesses caused by cuts across the grain of the timber. Ultimately, whole ships were made of iron and, later, steel.

Web Search Results

• Shipbuilding - Wikipedia

  Shipbuilding is the construction of ships and other floating vessels. In modern times, it normally takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, follow a specialized occupation that traces its roots to before recorded history. [...] Shipbuilding and ship repairs, both commercial and military, are referred to as naval engineering. The construction of boats is a similar activity called boat building. The dismantling of ships is called ship breaking. [...] Modern shipbuilding makes considerable use of prefabricated modular sections. Entire multi-deck segments of the hull or superstructure "Superstructure (ship)") will be built elsewhere in the yard, transported to the building dock or slipway, then lifted into place. This is known as "block construction". The most modern shipyards pre-install equipment, pipes, electrical cables, and any other components within the blocks, to minimize the effort needed to assemble or install components deep within

• Shipbuilding - Dr. Kit

  Shipbuilding is the process of building and repairing large ocean-going vessels—big ships that carry cargo and passengers, drill for oil, engage in battle, along with lots of other uses. The process is a lot different from boat building which involves building smaller boats–boats that are less than about 200 feet in length that are mostly used for fun or in small commercials ventures. Ships are built primarily of steel, while boats are made from wood, aluminum, fiberglass, with some steel.

• What is Shipbuilding? - TWI

  Subscribe to our newsletter to receive the latest news and events from TWI: # What is Shipbuilding? Shipbuilding involves the building of large sea-going vessels, usually of steel although other materials can also be used, including wood and composites. Shipbuilding differs from boatbuilding, which is the construction of smaller vessels (generally up to 50 metres in length) using many similar materials. [...] Shipbuilding is a cyclical and capital intensive industry where fleet expansion can have dramatic effects on a shipping line. Shipping lines can generally be divided into cruise lines (carrying passengers) and freight lines (carrying cargo). Of the various types of ships, tankers make up the largest segment with regards to tonnage. In 2019, the industry built around 15,000 tankers, with a combined gross tonnage of 13 million. This compares with cruise ships, which, during the same time, saw [...] ## What is the Meaning of Shipbuilding? The shipbuilding sector is involved with the construction of ships and other floating vessels, which normally takes place at a shipyard. The roots of shipbuilding go back thousands of years and can be seen right across the world.

• Shipbuilding Process : Finalising And Launching The Ship

  During the shipbuilding process, each ship block is brought to the building dock, where they are erected with cranes, as per the welding sequence. After each erection, welding is carried out on block joints. Alignment of blocks is a very important factor determining the productivity of the shipyard, and quality assurance measures are taken to ensure proper alignment. Improvements in alignment have been made by use of proper jigs for curved shell panels, proper welding techniques that have lower [...] A shipbuilding berth is a dock-like structure with flooring level below the mean sea level. When all the blocks are erected and welded, the dock is then flooded and the ship is floated out to the outfitting jetty. However, many shipyards in which the level of flooring in the building dock is above the mean sea level, the ship is made waterborne by using specialised launching techniques, which we will discuss later in the article. [...] When the ship is built, the entire load of the ship is taken by the keel blocks. Once ready for launch, the forward and aft cradles are constructed and welded to the hull. Now, the weight is ready to be shifted from the keel blocks to the cradles. The ship, along with the entire cradle structure is made to slide along the slideway, to the adjacent water body, where the load is balanced by the buoyancy, a process which we will understand in detail a little later.

• Ship construction | Materials, Design & Processes | Britannica

  Ship construction today is a complicated compound of art and science. In the great days of sail, vessels were designed and built on the basis of practical experience; ship construction was predominantly a skill. With the rapid growth and development of the physical sciences, beginning in the early 19th century, it was inevitable that hydrokinetics (the study of fluids in motion), hydrostatics (the study of fluids at rest), and the science of materials and structures should augment the [...] A shipbuilder undertakes to deliver to the client by a certain date and for a stated sum a vessel with specific dimensions, capabilities, and qualities, a vessel that has been tested on trial and is ready for service. The function of a shipyard is the production of completed ships in accordance with the shipbuilder’s undertakings. The raw materials for construction and finished items to be installed on board are delivered there. The labour force in the yard consists of various [...] The construction of the hull is only one of a shipbuilder’s responsibilities. As soon as a contract is placed, he must negotiate with subcontractors for the supply of items that shipyards do not produce—the electric power plant, propulsion machinery, shafting and propellers, engine-room auxiliaries, deck machinery, anchors, cables, and furniture and furnishings. Production planning and control is therefore a complex undertaking, covering subcontracts, assembly, and installation, in which costs

• Image

  

• Instance Of

  Q18761202

• Inception Date

  1/1/1841