Marine Link
Wednesday, April 25, 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

Eric Crooker (Photo: HII)

Crooker Named VP at Ingalls Shipbuilding

Eric Crooker has been promoted to vice president of contracts and pricing for Huntington…

from left to right: YANG Lianghu, General Manager, Binjiang Investment and Development Company;  WANG Hongqi, President, CSSC Nanjing Luzhou Marine Co., Ltd; SUN Wei, Vice President, CSSC Group, Michel van Roozendaal, President, MacGregor, Alexander Nürnberg, SVP R&D and Technology, MacGregor (Photo: MacGregor)

CSSC Nanjing Luzhou, MacGregor Start Joint Venture

MacGregor, part of Cargotec, and China State Shipbuilding Corporation's (CSSC) Nanjing…

Photo: Cosco Shipping Lines

20,000 TEU Cosco Shipping Gemini Delivered

The 20,000 TEU containership Cosco Shipping Gemini was officially named and delivered.

Image: StealthGas Inc.

Shipbuilding: StealthGas Adds LPG Vessel

StealthGas announced the delivery of its last newbuilding LPG vessel and the completion…

Australia: 21 Patrol Boat, $300m Deal

Australia said that it will gift Timor-Leste two new patrol boats following the finalization…

Launching of the W.B.Yeats at FSG. (Photo courtesy ©FSG)

German Shipbuilding: A Strong Vessel in a Heavy Sea

While orders for new vessels have continued to decline worldwide in 2017, the situation…

The Arleigh Burke (DDG 51) destroyer spent more than three days in the Gulf of Mexico testing the ship’s main propulsion, combat and other ship systems.  Photo by Andrew Young HII

HII snaps-up $27 mi DDG 51-Class Navy deal

Huntington Ingalls Industries’ Ingalls Shipbuilding division received a $27 million…

Jon Arena Photo HII

Arena Named VP at Shipbuilder

Huntington Ingalls Industries announced today that Jon Arena has been named vice…

Mr. Yoshikazu Kawagoe, Chief Technical Officer, Mitsui O.S.K. Lines accepts the "Great Ship of 2017" Award from Greg Trauthwein, Maritime Reporter & Engineering News.

MOL Accepts "Great Ship of the Year" Award

Maritime Reporter & Engineering New’s Great Ship of 2017 Award was presented to Mr.

The future littoral combat ship USS Indianapolis (LCS 17) is moved from an indoor production facility in Marinette, Wisc., to launchways in preparation for its April 14 launch into the Menomenee River. (U.S. Navy photo courtesy of Marinette Marine by Val Ihde)

US Could Reach 355 Ship Navy in 2030s -Official

The U.S. Navy could build its strength to 355 ships over a decade earlier than previously…

Ingalls Shipbuilding East Bank Photo HII

Ingalls to Reactivate East Bank Facilities

Huntington Ingalls Industries announced Thursday that its Ingalls Shipbuilding division…

Photo: Bahri

Bahri Adds New VLCC Khurais

National Shipping Company of Saudi Arabia (Bahri) has taken delivery of Khurais,…

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