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Wednesday, June 23, 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

GTT Wins Tank Design Order for Hyundai's New LNG Carrier

Engineering form GTT said on Tuesday it has received an order from Korean shipyard…

Jason K. Sutton (Photo: HII)

Sutton Named Chief Information Officer at Newport News

America’s largest military shipbuilding company Huntington Ingalls Industries (HII)…

Pictured are, left, Vladimir Bastin, Deputy Director, SCF Engineering Centre, and right, Roman Tseyger, Deputy CEO – Chief Production Officer, Zvezda. (Photo: Zvezda)

Keel Laid for First Russian-built Arc7 LNG Carrier

Russian shipbuilder Zvezda Shipbuilding Complex on Tuesday held a keel laying ceremony…

Damen’s “Swiss army knife” Multicats are popular in Europe. Damen has recently contracted for the first of these vessels to be built in the U.S. (Photo: Damen)

Multimission Vessels: Interest Across All Sectors

The development and construction of multimission vessels (MMVs) remains active across…

(Photo: C&C Marine and Repair)

C&C Delivers New Towboat to Parker Towing

C&C Marine and Repair has delivered the new towboat Olive Parker to Parker Towing Company.

(File photo: Eastern Shipbuilding Group)

US Shipyards Support $42.4 Billion in GDP

The United States' private shipyards support $42.4 billion in gross domestic product (GDP)…

(Photo: Derek Fountain / HII)

Ingalls to Hire Approximately 3,000 Full-time Shipbuilders

America's largest military shipbuilding group Huntington Ingalls Industries (HII)…

Image courtesy Nexans

Shipbuilding: Nexans Names New Flagship Cable Layer CLV Nexans Aurora

Nexans named its new flagship CLV Nexans Aurora. Built at Ulstein Verft in Norway…

(Photo: Lance Davis / HII)

Ingalls Wins Planning Yard Contract Potentially Worth $724 Million

America’s largest military shipbuilding company Huntington Ingalls Industries (HII)…

(Photo: Seaspan Shipyards)

Seaspan Shipyards Invests in Indigenous Marine Skills Training

Canadian shipbuilder Seaspan Shipyards announced it is investing $1.35 million to…

The Navajo-class (T-ATS) Towing, Salvage and Rescue Ship for the US Navy (Image: US Navy)

Austal USA to Design New T-ATS for the US Navy

Austal USA said it has been awarded a $3.6 million functional design contract to…

Image courtesy Wärtsilä

Wärtsilä Wins VLGC Cargo Handling Systems Order

Wärtsilä was contracted to supply another of its gas cargo handling systems. The…

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