Marine Link
Wednesday, October 17, 2018

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

Paul Bosarge, a burner workleaderman at Ingalls Shipbuilding, starts fabrication of steel for the amphibious assault ship Bougainville (LHA 8). Also pictured (left to right) are Frank Jermyn, Ingalls’ LHA 8 ship program manager; Lance Carnahan, Ingalls’ steel fabrication director; U.S. Marine Corps Capt. J.D. Owens, representing Supervisor of Shipbuilding, Gulf Coast; and Ricky Hathorn, Ingalls’ hull general superintendent. (Photo: Derek Fountain/HII)

Ingalls Begins Building LHA 8 for the US Navy

U.S. shipbuilder Huntington Ingalls Industries (HII) announced its Ingalls Shipbuilding…

Photo: ABS

ABS China Looks Ahead to 2030

The annual ABS Joint China and Hong Kong Committee gathered Industry leaders to discuss…

Halifax Shipyard employees celebrate as Cdr William Brown, Commanding Officer, HMCS Fredericton, leads the ship's company to accept their frigate following the completion of an extensive docking work period. Photo: Irving Shipbuilding

Irving Shipbuilding Hands-Over HMCS Fredericton

Canada’s National Shipbuilder Irving Shipbuilding celebrated the handover of Her…

(Photo: HII)

Paving the Way for 3D Printing in Naval Shipbuilding

A U.S. shipbuilder’s piloting of new technologies is redefining the future of the…

Lt. j.g. Ryan Thomas, a marine Inspector at Coast Guard Sector Delaware Bay, walks below the Kaimana Hila, an 850-foot container ship being constructed in Philadelphia Shipyards, Oct. 4, 2018. The Kaimana Hila and the Daniel K. Inouye are the two largest containerships ever built in the U.S. (Coast Guard photo by Seth Johnson)

How the Coast Guard Supports the Shipbuilding Industry

The U.S. Coast Guard is known for saving lives at sea, but did you know the service…

Maritime Administration Issues RFP for NSMV Training Vessels

Vessel Construction Manager Will Deliver National Security Multi-Mission Vessel.

Photo: Mitsui E&S Holdings Co.,Ltd./ Yangzijiang Shipbuilding

Yangzijiang Shipbuilding, Mitsui in Shipbuilding JV

A Japanese and a Chinese shipbuilding group have today signed a joint venture, set…

(Photo: AVEVA)

MV WERFTEN Strengthens Digital Innovation

Shipbuilder MV WERFTEN has expanded its agreement with engineering and industrial…

MES-S Delivers 66,000 DWT Bulker New Champ

MITSUI E & S SHIPBUILDING CO., LTD. (MES-S) completed and delivered a 66,000 dwt…

(File photo: Fincantieri)

France-Italy Naval Shipbuilding Deal Still Being Examined

A military shipbuilding alliance between Italy and France is still being examined…

Photo courtesy of Crowley

Crowley Awards Scholarships to Two Webb Students

Webb Institute, a four-year college specializing in naval architecture and marine engineering…

Image: Irving Shipbuilding

Canada’s Arctic Offshore Patrol Ship Named Harry DeWolf

Thousands of Halifax Shipyard shipbuilders, along with the ship’s company, joined…

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