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Saturday, May 28, 2022

Shipbuilding / Vessel Construction

Shipbuilding is the construction of ships, which takes place in a specialized facility known as a shipyard. Shipbuilders, also called shipwrights, are workers which specialize in vessel construction and repair. The construction of boats is called boat building. Due to the smaller size and scope of the vessels being produced, boats do not necessarily require the full services of a shipyard but may be built in a boatyard or even smaller private facility.

Block construction is a modern shipbuilding method which involves the assembly of prefabricated sections. Cross-sections of the superstructure are pre-built in a shipyard, taken to the building dock (or slipway,) and then hoisted into position and attached. Some of the more equipped shipyards are able to build equipment and utilities into the blocks, pre-installing pipes, plumbing, and electrical cables. The more components that can be built into the blocks before final assembly, the less effort required once the hull is welded together.

Since the 40s, modern ships have been made of welded steel. The first ships produced by this method had problems with inadequate fracture toughness, which let to rare but devastating structural cracks. The development of specialized steel in the 50s has largely eliminated the problem of brittle fracture, although there are still instances due to the unregulated use of grade A and B steel. This problem seems to result when steel with unknown toughness or FATT (fracture appearance transition temperature) is used in side shells. Despite these occasional incidents, most problems with brittle fractures seem to have been eliminated my modern methods and regulation.

Depending on design and materials, vessels reach a point in their lifespan where refitting and repair become impractical or impossible. The demolition of ships is called ship breaking- a process designed to allow materials and components to be reused and recycled. Equipment can often be reused in other ships, and metals (particularly steel) are separated for scrap recycling, with the hulls being discarded in ship graveyards.

Tags: shipbuilding Vessel Construction

(File photo: Fincantieri Marinette Marine)

Shipbuilders Council Announces 2022 Shipyard Safety Awards

The Shipbuilders Council of America (SCA), the national association representing the U.S.

(Photo: Austal)

Austal Delivers 15th Guardian-class Patrol Boat

Shipbuilding group Austal announced its Austal Australia arm has delivered the 15th…

Brandi Smith (Photo: HII)

Brandi Smith Named VP of Newport News' Columbia-Class Program

Global defense and technologies company HII announced Thursday that Brandi Smith…

Newport News Shipbuilding (Photo: HII)

HII’s Newport News Shipbuilding Announces Big Hiring Push

Global defense and technologies company HII announced Tuesday that the company’s…

Copyright Christian Horz/AdobeStock

SOS (Save our Shipbuilding): Germany’s VSM Calls for Reduction of Dependence on China

As the geopolitical landscape continues to quickly transform with the Russia/Ukraine war…

Photo courtesy Sanmar Shipyards

Shipbuilding: Sanmar Delivers Tug to Svitzer

Sanmar Shipyards delivered a RAmparts 2400SX class Z-drive tug to Svitzer for its…

Credit: Strategic Marine

Crew Transfer Vessel-maker Strategic Marine Orders 50 Caterpillar Engines Citing Supply Chain Chaos

Singapore's Strategic Marine has ordered 50 of its C32 ACERT IMO III engines from…

The 25 ft. 3 D printed boat (2019). Souce: University of Maine

Presentation of "The 3-D Printed Vessel" at WFSA event

Vessels fashioned in a 3D printer, rather than a shipyard, will be the subject of…

Mitsubishi Shipbuilding, NYK Line score ClassNK AIP for Large LCO2 Carrier

Mitsubishi Shipbuilding, a part of Mitsubishi Heavy Industries (MHI) Group, and Nippon…

The plug-in hybrid service operations vessel (SOV) selected by Empire Wind.
(Illustration: Edison Chouest Offshore)

Edison Chouest Offshore to Provide SOV for U.S. Offshore Wind Farm Owned by Equinor, BP

Empire Offshore Wind, a joint venture between Equinor and BP, has awarded Edison…

(Photo: Inmarsat)

Inmarsat Launches Fleet Xpress for Shipyards

Mobile satellite communications company Inmarsat aid it has made its Fleet Xpress…

For illustration - Credit: woodpencil/AdobeStock

Globus Maritime Orders Ultramax Bulker

Dry bulk shipping company Globus Maritime has signed a contract for the construction…

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