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Tuesday, February 7, 2023

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

Brazilian President Luiz Inacio Lula da Silva - Credit: Palácio do Planalto - CC BY 2.0

Brazil Govt Will Promote Recovery in Shipbuilding, Oil & Gas, President Lula Says

Brazilian President Luiz Inacio Lula da Silva said on Monday his government would…

(Photo: Philly Shipyard)

Philly Shipyard Transfers Prime Plate Facility to Avalotis Industrial Services

Philly Shipyard said it has reached a deal with Avalotis Corporation affiliate  Avalotis…

(Image: Mitsubishi Shipbuilding)

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Joey D’Isernia (Photo: Eastern Shipbuilding Group)

Joey D’Isernia Named CEO of Eastern Shipbuilding Group

Eastern Shipbuilding Group, Inc. (ESG) on Thursday announced Joey D’Isernia has been…

Austal USA welcomed U.S. Navy Chief of Naval Operations (CNO) Admiral Michael Gilday at the company’s Mobile, Ala. shipyard. Image courtesy Ausal USA

Chief of Naval Operations Visits Austal USA

Austal USA welcomed U.S. Navy Chief of Naval Operations (CNO) Admiral Michael Gilday…

(Image: Grimaldi Group)

Grimaldi Orders More Ammonia Ready Car Carriers

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Cadmatic CEO Jukka Rantala (left) and CONTACT Software CEO Karl Heinz Zachries (right) shake hands on the strategic partnership agreement (Photo: Cadmatic)

Shipbuilding: Cadmatic and CONTACT Software Partner

Engineering and industrial software providers Cadmatic and CONTACT Software have…

(Image: MARAD)

Steel Cut for Fourth National Security Multi-Mission Vessel

Philly Shipyard held a steel cutting ceremony for the fourth in a series of new training…

(Photo: Eastern Shipbuilding Group)

Eastern Cuts Steel for Bridgeport-Port Jefferson Ferry

Florida shipbuilder Eastern Shipbuilding Group has cut first steel for a new auto…

©Fincantieri Marine Group

Offshore Wind: Shipbuilder Selected for Crowley, Esvagt JV SOV

Following the news on Wednesday that Crest Wind, a joint venture between Crowley and ESVAGT…

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Team Resolute Wins $1.97B Deal to Build Three UK Navy Support Ships

Team Resolute, a consortium comprising BMT, Harland & Wolff, and Navantia UK, has…

(Photo: Enesel Group)

SWS Launches New Tanker for Enesel

Greek shipping company the Enesel Group announced the launch of its new Aframax/LR2…

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