Marine Link
Thursday, August 18, 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

(Photo: HII)

Ingalls Authenticates Keel of US Navy Destroyer Jeremiah Denton

HII on Wednesday announced its Ingalls Shipbuilding division authenticated the keel…

(Photo: Irving Shipbuilding)

Irving Cuts Steel for Canada's Sixth and Final Arctic and Offshore Patrol Ship

Irving Shipbuilding Inc. announced it has cut first steel for the future HMCS Robert Hampton Gray…

(Image: Alfa Laval)

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The first Offshore Patrol Cutter, USCGC Argus (WMSM 915) takes shape at Eastern Shipbuilding Group’s Panama City, Fla., shipyard.  The Coast Guard plans to build 25 OPCs. (ESG photo)

Shipyards Adapt to help Navy, Coast Guard Recapitalize Fleets

U.S. shipyards are making improvements to building ships for the Navy and Coast Guard…

(Photo: Austal)

Austal Delivers Second Evolved Cape-class Patrol Boat

Australian shipbuilding group Austal Limited announced its Austal Australia arm has…

For Illustration - Liza Unity is Guyana's second FPSO in production. - Image Credit: SBM Offshore

SBM Orders Seventh Fast4Ward Hull

Dutch FPSO leasing specialist SBM Offshore has ordered its latest Fast4Ward multi…

Photo courtesy NYK

KNOT's First LNG Dual Fuel Shuttle Tanker Delivered

A dual-fuel LNG (liquefied natural gas) shuttle tanker1 ordered by Knutsen NYK Offshore Tankers AS…

CCGS George R. Pearkes (File photo: Travis Magee / U.S. Coast Guard)

Heddle Shipyards Awarded Canadian Coast Guard Repair Work

The Canadian Coast Guard has awarded Heddle Shipyards a $36.14 million vessel life…

USNS Apalachicola (EPF 13) (Photo: Austal USA)

US Navy Testing Unmanned Capabilities Aboard USNS Apalachicola

The future USNS Apalachicola (EPF 13) is performing a series of planned test events…

(Photo: The Interlake Steamship Company)

US' First Modern Laker Begins Maiden Voyage

The newly built Mark W. Barker, the United States' first new Great Lakes bulk carrier…

The agreement between the shipbuilders was signed by Dr. Abdullah Al Ahmari, CEO of IMI, and Mr. Ohmin Ahn, Executive Vice President at HHI, at the King Salman International Complex for Maritime Industries and Services in Ras Al-Khair, Saudi Arabia. Photo courtesy IMI/HHI

IMI, Hyundai Heavy Industries Expanding Shipbuilding Partnership

International Maritime Industries (IMI), the largest shipyard in the MENA region…

The Ford-class aircraft carrier USS Gerald R. Ford (CVN 78) and the Italian aircraft carrier ITS Cavour (CVH 550) transit the Atlantic Ocean March 20, 2021, marking the first time a Ford-class and Italian carrier have operated together underway. (U.S. Navy photo by Mass Communication Specialist 3rd Class Riley McDowell)

From Surface to Subsea to Space: U.S. Navy Shipbuilding Outlook 2022

As a rudderless U.S. Navy debates maritime strategy, fleet futures and platform performance…

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