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Sunday, September 19, 2021

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

Rusty Murdaugh (Photo: Austal USA)

Austal USA Appoints Murdaugh as President

Australian shipbuilding group Austal Limited announced its Austal USA arm has appointed…

Fincantieri Marinette Marine is building the U.S. Navy’s Constellation class frigates (Image: U.S. Navy)

Prefabrication of Federal Shipbuilding Project Funding

Initial appropriations discussions are underway for Fiscal Year 2022, with a continued…

Rusty Murdaugh, Austal USA's new President

Austal USA Names Murdaugh as President

Austal USA has appointed Rusty Murdaugh as its new President. Murdaugh joined Austal…

Babcock Introduces Arrowyard Shipbuilding Approach

British aerospace, defense and security company Babcock has launched a new shipbuilding…

Credit:  kilhan/AdobeStock

InfraStrata Proposes Name Change to Harland & Wolff

InfraStrata, the UK quoted company focused on strategic infrastructure projects and…

©  Vilhelm / Adobe Stock

HVAC: Three Challenges to Challenge Engineers

“On the 27th of July, 1850, I sailed from Baltimore in the ship Nonantum, of Boston…

Credit: ABS

ABS, HZS, Wärtsilä Working on 'Future-ready' Multi-fuel Electric LNG Carrier

ABS, Hudong–Zhonghua Shipbuilding (HZS), and Wärtsilä have teamed to develop a flexible…

Credit: Björn Wylezich/AdobeStock

Evergreen Marine Orders 24 Container Ships

Container shipping firm Evergreen Marine has this week ordered 24 container ships for a total price

(Photo: SEA-LNG)

Orders for LNG-fueled Ships Are on the Rise

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Credit: Jasmine Halki - CC BY 2.0

Hyundai Heavy Industries Raises $935M. Eyes New Tech Investments

South Korean shipbuilder Hyundai Heavy Industries has raised $935 million after pricing…

(Image: Fincantieri Bay Shipbuilding)

Bay Shipbuilding to Build LNG Bunker Barge for Crowley

Fincantieri Bay Shipbuilding said it will build a liquefied natural gas (LNG) bunkering…

Sergey Tseluyko, Managing Director of Zvezda (left), and Igor Tonkovidov, President and CEO of Sovcomflot (right), signing keel laying statement during the ceremony. (Photo: Zvezda)

New Ship Repair Cluster Coming to Russia’s Far East

A group of Russian maritime stakeholders have agreed to develop ship repair cluster…

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