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Friday, January 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

WindServe Marine's WindServe Odyssey began operations in 2020 (Photo: WindServe Marine)

Ørsted and Eversource to Charter Newbuild CTVs from WindServe and AOS

Offshore wind developers Ørsted and Eversource announced Thursday that they have…

Karey Malyszko (Photo: HII)

Malyszko Named Plant Operations VP at Newport News Shipbuilding

America's largest military shipbuilder Huntington Ingalls Industries (HII) announced…

The certificate was delivered to Won Ho Joo, Senior Executive Vice President and Chief Technical Officer of HHI, by Christophe Capitant, Country Chief Executive of BV Korea, at a ceremony held at HHI’s Shipbuilding Management’s offices in Ulsan, Republic of Korea. (Photo: BV)

KSOE & HHI Receive AIP for BV Cyber Managed Prepared Notation

Bureau Veritas (BV) has delivered an approval in principle (AIP) for BV’s ‘Cyber…

Photo courtesy Eastern Shipbuilding Group

Shipbuilding: ESG Completes New Aluminum Superstructure Fabrication, Assembly Hall

Eastern Shipbuilding Group, Inc. (ESG) complted a new $5-million aluminum superstructure…

(Image: American Cruise Lines)

American Cruise Lines Reveals Plan to Build 12 New Ships

U.S. river and coastal cruise shipping company American Cruise Lines announced plans…

A recent aerial image of most of Austal USA, including the new steel panel line addition. Photo courtesy Austal USA

Shipbuilding Interview: Rusty Murdaugh, President, Austal USA

Austal USA has been investing mightily, more than $600 million to expand its repair…

Josh Pruzek (Photo: RECONCRAFT)

Pruzek Named Executive VP at RECONCRAFT

Boatbuilder RECONCRAFT announced that it has named Josh Pruzek as executive vice president…

Credit: MHI

World’s First: Fully Autonomous Ship Navigation Systems Tested on Coastal Ferry in Japan

The Nippon Foundation, Mitsubishi Shipbuilding, and Shin Nihonkai Ferry Co., Ltd.

Credit: VARD

Nergård Havfiske Orders $57M Stern Trawler from VARD

Shipbuilder VARD said Friday it had secured a new contract to design and build one…

(Photo: DSME)

EU Blocks Korean Shipbuilding Merger

Hyundai Heavy Industries' proposed takeover of rival Daewoo Shipbuilding & Marine…

(Image: KSOE)

Technology to Ship Hydrogen Ready by 2025, KSOE Says

Korea Shipbuilding & Offshore Engineering (KSOE) expects to have the technology to…

©PIRIOU - 3D image of the future TOWT sailing cargo ship

TOWT Orders Sailing Cargo Ship from PIRIOU

French shipyard PIRIOU said it has been award a contract for the design studies and…

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