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82-462: At the end of 2009, Metso acquired Tamfelt Corporation, one of the world's leading suppliers of technical textiles. At the end of June 2020, Neles was separated from Metso. The State of Finland sold its share of 15 per cent to Valmet. In mid-July, the Swedish company Alfa Laval made an offer to buy Neles. Valmet's CEO Laine rebuked the board of Neles for ill-advised actions and accepting a price that

164-615: A solar barque . Early Egyptians also knew how to fasten the planks of this ship together with mortise and tenon joints. The oldest known tidal dock in the world was built around 2500 BC during the Harappan civilisation at Lothal near the present day Mangrol harbour on the Gujarat coast in India . Other ports were probably at Balakot and Dwarka . However, it is probable that many small-scale ports, and not massive ports, were used for

246-426: A broad beam and heavily curved at both ends. Another important ship type was the galley, which was constructed with both sails and oars. The first extant treatise on shipbuilding was written c.  1436 by Michael of Rhodes, a man who began his career as an oarsman on a Venetian galley in 1401 and worked his way up into officer positions. He wrote and illustrated a book that contains a treatise on shipbuilding,

328-410: A curved, progressive joint could not be achieved. One study finds that there were considerable improvements in ship speed from 1750 to 1850: "we find that average sailing speeds of British ships in moderate to strong winds rose by nearly a third. Driving this steady progress seems to be the continuous evolution of sails and rigging, and improved hulls that allowed a greater area of sail to be set safely in

410-589: A given wind. By contrast, looking at every voyage between the Netherlands and East Indies undertaken by the Dutch East India Company from 1595 to 1795, we find that journey time fell only by 10 percent, with no improvement in the heavy mortality, averaging six percent per voyage, of those aboard." Initially copying wooden construction traditions with a frame over which the hull was fastened, Isambard Kingdom Brunel 's Great Britain of 1843

492-508: A high degree of commercialization and an increase in trade. Large numbers of ships were built to meet the demand. The Ming voyages were large in size, numbering as many as 300 ships and 28,000 men. The shipbuilders were brought from different places in China to the shipyard in Nanjing , including Zhejiang , Jiangxi , Fujian , and Huguang (now the provinces of Hubei and Hunan ). One of

574-402: A joint venture called AlfaWall Oceanbird . The partnership aims to supply wind propulsion solutions for the shipping industry, in order to reduce emissions. Shipbuilding Shipbuilding is the construction of ships and other floating vessels . In modern times, it normally takes place in a specialized facility known as a shipyard . Shipbuilders , also called shipwrights , follow

656-1001: A long track record working with end-markets in oil & gas drilling and production , oil & gas and renewable fuel processing & transportation, oil refineries , and the petrochemicals industry. Other areas include HVAC applications, district heating and district cooling , power generation , engine cooling , pulp , paper , municipal and industrial waste treatment and recycling , bio-based material , mining and minerals. Product areas include heat exchanger and industrial scale centrifugal separation technologies. Alfa Laval’s Food & Water division works with end-markets in food manufacturing , dairy , pharmaceuticals , ethanol , starch , sugar , municipal wastewater and industrial wastewater treatment, proteins , biotech , vegetable oils , and breweries . Product areas include high speed separators , food systems, food heat transfer, decanters , and hygienic fluid handling technologies. In 2022, Alfa Laval acquired Desmet, part of

738-460: A number of global partnerships for improving sustainability . In 2018, Alfa Laval became a part-owner in Malta, Inc., for which they also supply heat transfer technologies. Incubated at X Development (formerly Google X), Malta Inc. is developing a new thermal energy storage solution that will enable the shift to renewable energy sources. Also in 2021, Alfa Laval and Wallenius Marine formed

820-614: A number of inter-visible islands, boats (and, later, ships) with water-tight hulls (unlike the "flow through" structure of a raft) could be developed. The ships of ancient Egypt were built by joining the hull planks together, edge to edge, with tenons set in mortices cut in the mating edges. A similar technique, but with the tenons being pinned in position by dowels, was used in the Mediterranean for most of classical antiquity . Both these variants are "shell first" techniques, where any reinforcing frames are inserted after assembly of

902-406: A range of sailing rigs that included the crab claw sail . The origins of this technology is difficult to date, relying largely on linguistics (studying the words for parts of boats), the written comments of people from other cultures, including the observations of European explorers at the time of first contact and the later more systematic ethnographic observations of the types of craft in use. There

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984-891: A similar design. Austronesians established the Austronesian maritime trade network at around 1000 to 600 BC, linking Southeast Asia with East Asia, South Asia, the Middle East, and later East Africa. The route later became part of the Spice trade network and the Maritime Silk Road . The naval history of China stems back to the Spring and Autumn period (722 BC–481 BC) of the ancient Chinese Zhou dynasty . The Chinese built large rectangular barges known as "castle ships", which were essentially floating fortresses complete with multiple decks with guarded ramparts . However,

1066-411: A single piece of hollowed-out log. At the sides were two planks, and two horseshoe-shaped wood pieces formed the prow and stern . These were fitted tightly together edge-to-edge with dowels inserted into holes in between, and then lashed to each other with ropes (made from rattan or fiber) wrapped around protruding lugs on the planks. This characteristic and ancient Austronesian boatbuilding practice

1148-484: A specialized occupation that traces its roots to before recorded history . Until recently, with the development of complex non-maritime technologies, a ship has often represented the most advanced structure that the society building it could produce. Some key industrial advances were developed to support shipbuilding, for instance the sawing of timbers by mechanical saws propelled by windmills in Dutch shipyards during

1230-526: A treatise on mathematics, much material on astrology, and other materials. His treatise on shipbuilding treats three kinds of galleys and two kinds of round ships. Shipbuilders in the Ming dynasty (1368~1644) were not the same as the shipbuilders in other Chinese dynasties, due to hundreds of years of accumulated experiences and rapid changes in the Ming dynasty. Shipbuilders in the Ming dynasty primarily worked for

1312-425: Is a Swedish company , founded in 1883 by Gustaf de Laval and Oscar Lamm . The company started by providing centrifuges to dairies to be used to separate cream from milk. It now deals in the production of specialised products for heavy industry . The products are used to heat, cool, separate and transport such products as oil, water, chemicals, beverages, foodstuffs, starch and pharmaceuticals. Alfa Laval

1394-467: Is a famous example). Later Great Britain ' s iron hull was sheathed in wood to enable it to carry a copper-based sheathing . Brunel's Great Eastern represented the next great development in shipbuilding. Built-in association with John Scott Russell , it used longitudinal stringers for strength, inner and outer hulls, and bulkheads to form multiple watertight compartments. Steel also supplanted wrought iron when it became readily available in

1476-663: Is a possibility that they may have reached the Americas . After the 11th century, a new type of ship called djong or jong was recorded in Java and Bali. This type of ship was built using wooden dowels and treenails, unlike the kunlun bo which used vegetal fibres for lashings. The empire of Majapahit used jong, built in northern Java, for transporting troops overseas. The jongs were transport ships which could carry 100–2000 tons of cargo and 50–1000 people, 28.99–88.56 meter in length. The exact number of jong fielded by Majapahit

1558-556: Is called ship breaking . The earliest evidence of maritime transport by modern humans is the settlement of Australia between 50,000 and 60,000 years ago. This almost certainly involved rafts , possibly equipped with some sort of sail . Much of the development beyond that raft technology occurred in the "nursery" areas of the Mediterranean and in Maritime Southeast Asia . Favoured by warmer waters and

1640-641: Is from the 6th to 5th millennium BC of the Ubaid period of Mesopotamia . They were made from bundled reeds coated in bitumen and had bipod masts. They sailed in shallow coastal waters of the Persian Gulf . Evidence from Ancient Egypt shows that the early Egyptians knew how to assemble planks of wood into a ship hull as early as 3100 BC. Egyptian pottery as old as 4000 BC shows designs of early fluvial boats or other means for navigation. The Archaeological Institute of America reports that some of

1722-534: Is headquartered in Lund , Sweden and has subsidiary companies in over 100 countries around the world, including South Africa , Denmark , Italy , India , Japan , China , Netherlands , and the United States . As of the end of 2021, Alfa Laval had a global workforce of 18,574 employees and revenue of $ 4.77 billion. Alfa Laval is a heavy industry company that focuses on the large-scale operations, such as

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1804-724: Is headquartered in Toronto and in 2009 opened a service centre in Edmonton, Alberta. In late 2010, staff in the Canadian operations numbered 74. Alfa Laval has been present in the United States of America for more than 130 years—marketing and supplying a broad range of heat exchangers, separators, decanters, pumps, tank cleaning devices, valves and fittings to customers in a wide range of market segments. Alfa Laval's head office in UK

1886-600: Is known as the " lashed-lug " technique. They were commonly caulked with pastes made from various plants as well as tapa bark and fibres which would expand when wet, further tightening joints and making the hull watertight. They formed the shell of the boat, which was then reinforced by horizontal ribs. Shipwrecks of Austronesian ships can be identified from this construction as well as the absence of metal nails. Austronesian ships traditionally had no central rudders but were instead steered using an oar on one side. Austronesians traditionally made their sails from woven mats of

1968-585: Is located in Camberley , Surrey. Their pumps and manufacturing division was located in Eastbourne before closing in 2023, with further sales office in Birmingham . Much of Alfa Laval’s current development is focused on technologies for improving energy efficiency to reduce carbon emissions , meeting marine environmental regulations , and providing cleaner water. The company is also a participant in

2050-571: Is noted in the works of Ibn Jubayr . The ships of Ancient Egypt's Eighteenth Dynasty were typically about 25 meters (80 ft) in length and had a single mast , sometimes consisting of two poles lashed together at the top making an "A" shape. They mounted a single square sail on a yard , with an additional spar along the bottom of the sail. These ships could also be oar propelled. The ocean- and sea-going ships of Ancient Egypt were constructed with cedar wood, most likely hailing from Lebanon. The ships of Phoenicia seem to have been of

2132-499: Is only a small body of archaeological evidence available. Since Island Southeast Asia contained effective maritime transport between its very large number of islands long before Austronesian seafaring, it is argued that Austronesians adopted an existing maritime technology from the existing inhabitants of this region. Austronesian ships varied from simple canoes to large multihull ships. The simplest form of all ancestral Austronesian boats had five parts. The bottom part consists of

2214-411: Is unknown, but the largest number of jong deployed in an expedition is about 400 jongs, when Majapahit attacked Pasai, in 1350. Until recently, Viking longships were seen as marking an advance on traditional clinker -built hulls where leather thongs were used to join plank boards. This consensus has recently been challenged. Haywood has argued that earlier Frankish and Anglo-Saxon nautical practice

2296-589: The ghe mành . Early Egyptians also knew how to assemble planks of wood with treenails to fasten them together, using pitch for caulking the seams. The " Khufu ship ", a 43.6-meter vessel sealed into a pit in the Giza pyramid complex at the foot of the Great Pyramid of Giza in the Fourth Dynasty around 2500 BC, is a full-size surviving example which may have fulfilled the symbolic function of

2378-579: The k'un-lun po or kunlun bo ("ship of the k'un-lun [dark-skinned southern people]"). These ships used two types of sail of their invention, the junk sail and tanja sail . Large ships are about 50–60 metres (164–197 ft) long, had 5.2–7.8 metres (17–26 ft) tall freeboard , each carrying provisions enough for a year, and could carry 200–1000 people. The Chinese recorded that these Southeast Asian ships were hired for passage to South Asia by Chinese Buddhist pilgrims and travelers, because they did not build seaworthy ships of their own until around

2460-724: The Abbasid period. Mughal Empire had a large shipbuilding industry, which was largely centred in the Bengal Subah . Economic historian Indrajit Ray estimates shipbuilding output of Bengal during the sixteenth and seventeenth centuries at 223,250 tons annually, compared with 23,061 tons produced in nineteen colonies in North America from 1769 to 1771. He also assesses ship repairing as very advanced in Bengal. Documents from 1506, for example, refer to watercraft on

2542-533: The Desmet Ballestra , a world leader in engineering and supplying processing plants and technologies for edible oils and biofuel sectors. This acquisition is to support Alfa Laval's transformation towards renewable fuels. Alfa Laval was founded as AB Separator by Swedish inventor Gustaf de Laval and engineer Oscar Lamm in Stockholm in 1883. The De Laval Cream Separator Co., an American subsidiary,

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2624-547: The Napoleonic Wars were still built more or less to the same basic plan as those of the Spanish Armada of two centuries earlier, although there had been numerous subtle improvements in ship design and construction throughout this period. For instance, the introduction of tumblehome , adjustments to the shapes of sails and hulls, the introduction of the wheel, the introduction of hardened copper fastenings below

2706-459: The Sierra Leone river carrying 120 men. Others refer to Guinea coast peoples using war canoes of varying sizes – some 70 feet in length, 7–8 feet broad, with sharp pointed ends, rowing benches on the side, and quarterdecks or forecastles build of reeds. The watercraft included miscellaneous facilities, such as cooking hearths, and storage spaces for the crew's sleeping mats. From

2788-536: The 17th century, some kingdoms added brass or iron cannons to their vessels. By the 18th century, however, the use of swivel cannons on war canoes accelerated. The city-state of Lagos , for instance, deployed war canoes armed with swivel cannons. With the development of the carrack , the west moved into a new era of ship construction by building the first regular oceangoing vessels. In a relatively short time, these ships grew to an unprecedented size, complexity, and cost. Shipyards became large industrial complexes, and

2870-701: The 5,000-year-old ship may have even belonged to Pharaoh Aha . The Austronesian expansion , which began c.  3000 BC with migration from Taiwan to the island of Luzon in the Philippines , spread across Island Southeast Asia . Then, between 1500 BC and 1500 AD they settled uninhabited islands of the Pacific, and also sailed westward to Madagascar. This is associated with distinctive maritime technology: lashed lug construction techniques (both in outrigger canoes and in large planked sailing vessels), various types of outrigger and twin-hulled canoes and

2952-606: The 8–9th century AD. Austronesians (especially from western Island Southeast Asia ) were trading in the Indian Ocean as far as Africa during this period. By around 50 to 500 AD, a group of Austronesians, believed to be from the southeastern coasts of Borneo (possibly a mixed group related to the modern Ma'anyan , Banjar , and/or the Dayak people ) crossed the Indian Ocean and colonized Madagascar . This resulted in

3034-764: The Admiral Zheng He . Six voyages were conducted under the Yongle Emperor's reign, the last of which returned to China in 1422. After the Yongle Emperor's death in 1424, his successor the Hongxi Emperor ordered the suspension of the voyages. The seventh and final voyage began in 1430, sent by the Xuande Emperor . Although the Hongxi and Xuande Emperors did not emphasize sailing as much as the Yongle Emperor, they were not against it. This led to

3116-507: The Chinese vessels during this era were essentially fluvial (riverine). True ocean-going Chinese fleets did not appear until the 10th century Song dynasty . There is considerable knowledge regarding shipbuilding and seafaring in the ancient Mediterranean. Large multi-masted seafaring ships of Southeast Asian Austronesians first started appearing in Chinese records during the Han dynasty as

3198-654: The Chinese, from the Old Javanese parahu , Javanese prau , or Malay perahu – large ship. Southern Chinese junks showed characteristics of Austronesian ships that they are made using timbers of tropical origin, with keeled, V-shaped hull. This is different from northern Chinese junks, which are developed from flat-bottomed riverine boats. The northern Chinese junks were primarily built of pine or fir wood, had flat bottoms with no keel, water-tight bulkheads with no frames, transom (squared) stern and stem, and have their planks fastened with iron nails or clamps. It

3280-570: The Han dynasty junk ship design in the same century. The Chinese were using square sails during the Han dynasty and adopted the Austronesian junk sail later in the 12th century. Iconographic remains show that Chinese ships before the 12th century used square sails, and the junk rig of Chinese ships is believed to be developed from tilted sails . Southern Chinese junks were based on keeled and multi-planked Austronesian ship known as po by

3362-713: The Harappan maritime trade. Ships from the harbour at these ancient port cities established trade with Mesopotamia . Shipbuilding and boatmaking may have been prosperous industries in ancient India. Native labourers may have manufactured the flotilla of boats used by Alexander the Great to navigate across the Hydaspes and even the Indus , under Nearchos . The Indians also exported teak for shipbuilding to ancient Persia . Other references to Indian timber used for shipbuilding

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3444-988: The Marine, Energy, Food & Water industries. Alfa Laval manufactures valves , pumps , heat exchangers , evaporators , distillers , oil separators, filters , ballast water treatment systems, and all other hardware vital to the operation of the a ship's engine room . As of 2011, Alfa Laval consolidated its Marine, Offshore, and Diesel divisions into one, Marine & Diesel, division in an effort to simplify logistics and administration of its marine wing to better serve maritime industry. Alfa Laval’s Marine division works with end-markets in shipbuilding , offshore oil and gas, and diesel & gas-engine power . The division also develops technology to help marine customers comply with environmental regulations. Product areas include marine separation and heat transfer equipment , boilers and gas systems, and pumping systems. In 2014, Alfa Laval acquired marine pump manufacturer Framo AS . It

3526-428: The United States in a 15-year period just before the war was a grand total of two. During the war, thousands of Liberty ships and Victory ships were built, many of them in shipyards that did not exist before the war. And, they were built by a workforce consisting largely of women and other inexperienced workers who had never seen a ship before (or even the ocean). After World War II , shipbuilding (which encompasses

3608-455: The company. Manufacturing at Alfa Laval is carried out in several countries including Sweden, India, China, the UK, and USA. As of 2022, Alfa Laval has over forty manufacturing units globally and holds more than 2,000 patents. In Canada, Alfa Laval has had a presence for over 100 years, previously as DeLaval , which would provide such services to farmers as assisting them in the storage of their milk and providing cream separators. Alfa Laval

3690-459: The company’s headquarter. In 1963, AB Separator changed its name to Alfa-Laval AB, combining the name of the company’s founder with a reference to the Alfa Disc technology in its separators. In 1991, the company returned to private ownership after it was acquired by the Swedish packaging group Tetra Pak . It was then renamed Alfa Laval AB and made into an independent industrial group within

3772-500: The end of the Ming dynasty in 1644. During this period, Chinese navigation technology did not make any progress and even declined in some aspect. In the Islamic world, shipbuilding thrived at Basra and Alexandria . The dhow , felucca , baghlah , and the sambuk became symbols of successful maritime trade around the Indian Ocean from the ports of East Africa to Southeast Asia and the ports of Sindh and Hind (India) during

3854-457: The first half of the 17th century. The design process saw the early adoption of the logarithm (invented in 1615) to generate the curves used to produce the shape of a hull , especially when scaling up these curves accurately in the mould loft . Shipbuilding and ship repairs, both commercial and military, are referred to as naval engineering . The construction of boats is a similar activity called boat building . The dismantling of ships

3936-594: The government, under command of the Ministry of Public Works . During the early years of the Ming dynasty, the Ming government maintained an open policy towards sailing. Between 1405 and 1433, the government conducted seven diplomatic Ming treasure voyages to over thirty countries in Southeast Asia, India, the Middle East and Eastern Africa. The voyages were initiated by the Yongle Emperor , and led by

4018-507: The infrastructure required to transport the trees from their point of origin to the shipyards. Shipbuilders were usually divided into different groups and had separate jobs. Some were responsible for fixing old ships; some were responsible for making the keel and some were responsible for building the helm. After 1477, the Ming government reversed its open maritime policies, enacting a series of isolationist policies in response to piracy . The policies, called Haijin (sea ban), lasted until

4100-536: The introduction of outrigger canoe technology to non-Austronesian cultures in the East African coast. The ancient Chinese also built fluvial ramming vessels as in the Greco-Roman tradition of the trireme , although oar-steered ships in China lost favor very early on since it was in the 1st century China that the stern -mounted rudder was first developed. This was dually met with the introduction of

4182-491: The keel, the hull was made by overlapping nine strakes on either side with rivets fastening the oaken planks together. It could hold upwards of thirty men. Sometime around the 12th century, northern European ships began to be built with a straight sternpost , enabling the mounting of a rudder, which was much more durable than a steering oar held over the side. Development in the Middle Ages favored "round ships", with

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4264-470: The latter half of the 19th century, providing great savings when compared with iron in cost and weight. Wood continued to be favored for the decks. During World War II , the need for cargo ships was so great that construction time for Liberty ships went from initially eight months or longer, down to weeks or even days. They employed production line and prefabrication techniques such as those used in shipyards today. The total number of dry-cargo ships built in

4346-412: The mid-18th century and from the mid-19th century onwards. This was partly led by the shortage of "compass timber", the naturally curved timber that meant that shapes could be cut without weaknesses caused by cuts across the grain of the timber. Ultimately, whole ships were made of iron and, later, steel . The earliest known depictions (including paintings and models) of shallow-water sailing boats

4428-568: The most famous shipyards was Long Jiang Shipyard ( zh:龙江船厂 ), located in Nanjing near the Treasure Shipyard where the ocean-going ships were built. The shipbuilders could build 24 models of ships of varying sizes. Several types of ships were built for the voyages, including Shachuan (沙船), Fuchuan (福船) and Baochuan ( treasure ship ) (宝船). Zheng He's treasure ships were regarded as Shachuan types, mainly because they were made in

4510-490: The newly formed Tetra Laval Group. Tetra Laval sold a majority stake of Alfa Laval to the Swedish private equity group Industri Kapital (now known as IK Investment Partners ) in 2000, who purchased the company with the intention of listing it publicly within a five-year period. Alfa Laval returned to the Stockholm Stock Exchange in 2002. As of 2019, Tetra Laval has retained a 29.1% minority stake in

4592-465: The oldest ships yet unearthed are known as the Abydos boats . These are a group of 14 ships discovered in Abydos that were constructed of wooden planks which were "sewn" together. Discovered by Egyptologist David O'Connor of New York University , woven straps were found to have been used to lash the planks together, and reeds or grass stuffed between the planks helped to seal the seams. Because

4674-471: The planking has defined the hull shape. Carvel construction then took over in the Mediterranean. Northern Europe used clinker construction , but with some flush-planked ship-building in, for instance, the bottom planking of cogs . The north-European and Mediterranean traditions merged in the late 15th century, with carvel construction being adopted in the North and the centre-line mounted rudder replacing

4756-492: The quarter rudder of the Mediterranean. These changes broadly coincided with improvements in sailing rigs, with the three masted ship becoming common, with square sails on the fore and main masts, and a fore and aft sail on the mizzen. Ship-building then saw a steady improvement in design techniques and introduction of new materials. Iron was used for more than fastenings ( nails and bolts ) as structural components such as iron knees were introduced, with examples existing in

4838-416: The resilient and salt-resistant pandanus leaves. These sails allowed Austronesians to embark on long-distance voyaging. The ancient Champa of Vietnam also uniquely developed basket-hulled boats whose hulls were composed of woven and resin - caulked bamboo, either entirely or in conjunction with plank strakes . They range from small coracles (the o thúng ) to large ocean-going trading ships like

4920-813: The separator. In 1890, AB Separator introduced the first continuous separator with disc stacks featuring conical metal discs called Alfa Discs, which increased the separation capacity. AB Separator was a privately held company until 1901, when it was listed on the Stockholm Stock Exchange . The company continued to expand internationally in the early 1900s, opening subsidiaries in Denmark , South Africa , Finland , Australia , New Zealand , Poland , Yugoslavia and Ireland by 1936. In 1938, AB Separator began manufacturing its first heat exchanger . These were produced in Lund, Sweden, where later became

5002-450: The shipbuilder learned the techniques of shipbuilding from his family and is very likely to earn a higher status in the shipyard. Additionally, the shipbuilder had access to business networking that could help to find clients. If a shipbuilder entered the occupation through an apprenticeship, the shipbuilder was likely a farmer before he was hired as a shipbuilder, or he was previously an experienced shipbuilder. Many shipbuilders working in

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5084-456: The ships are all buried together and near a mortuary belonging to Pharaoh Khasekhemwy , originally they were all thought to have belonged to him, but one of the 14 ships dates to 3000 BC, and the associated pottery jars buried with the vessels also suggest earlier dating. The ship dating to 3000 BC was about 75 feet (23 m) long and is now thought to perhaps have belonged to an earlier pharaoh. According to professor O'Connor,

5166-429: The ships built were financed by consortia of investors. These considerations led to the documentation of design and construction practices in what had previously been a secretive trade run by master shipwrights and ultimately led to the field of naval architecture , in which professional designers and draftsmen played an increasingly important role. Even so, construction techniques changed only very gradually. The ships of

5248-422: The shipyard were forced into the occupation. The ships built for Zheng He's voyages needed to be waterproof, solid, safe, and have ample room to carry large amounts of trading goods. Therefore, due to the highly commercialized society that was being encouraged by the expeditions, trades, and government policies, the shipbuilders needed to acquire the skills to build ships that fulfil these requirements. Shipbuilding

5330-433: The shipyards, the marine equipment manufacturers, and many related service and knowledge providers) grew as an important and strategic industry in a number of countries around the world. This importance stems from: Historically, the industry has suffered from the absence of global rules and a tendency towards ( state - supported ) over-investment due to the fact that shipyards offer a wide range of technologies, employ

5412-666: The site of Portus in Rome revealed inscriptions in a shipyard constructed during the reign of Trajan (98–117) that indicated the existence of a shipbuilders guild . Roughly at this time is the last migration wave of the Austronesian expansion , when the Polynesian islands spread over vast distances across the Pacific Ocean were being colonized by the (Austronesian) Polynesians from Island Melanesia using double-hulled voyaging catamarans . At its furthest extent, there

5494-522: The stock. Alfa Laval only received the support of a third of Neles owners for its takeover bid, and withdrew from the competition in November. In January 2021, Valmet reported that it would supply the mills of the Swedish company Renewcell with equipment to produce dissolving pulp from recycled clothes and textiles. In May, Valmet announced that it would deliver drying technology to Spinnova, which produces textile fiber from cellulose. Valmet equipment for

5576-450: The strategy to expand digital services for offshore vessels was the acquisition in 2022 of Danish company BunkerMetric, a developer of advanced decision support tools for offshore bunker vessels. The use of tools from both solutions will help optimise and improve the efficiency of maritime carriers. BunkerMetric's procurement optimisation tool will be part of the subscription of StormGeo's existing offering. Alfa Laval’s Energy division has

5658-482: The stronger flushed deck design derived from Indian designs, and the increasing use of iron reinforcement. The flushed deck originated from the Bengal rice ships, with Bengal being famous for its shipbuilding industry at the time. Iron was gradually adopted in ship construction, initially to provide stronger joints in a wooden hull e.g. as deck knees, hanging knees, knee riders and the other sharp joints, ones in which

5740-642: The textile industry is in high demand in Europe, because the collection of discarded textiles for recycling must be organized in the EU countries by 2025. Valmet had been developing recycling technology with Renewcell for years, and the companies constructed a pilot plant and a factory in Sundsvall together. In July 2021, Valmet and Neles agreed to merge. Neles owners obtained 18.8 per cent of the merging company. The companies’ synergies were considered to be substantial during

5822-484: The transaction. Neles was thought to help increase sales in automation systems, while its products were also to be sold to the paper industry. Neles merged into Valmet in April 2022, becoming Valmet's fifth business line, Flow Control. The companies had several managers and employees who knew each other from Metso days. After the merger, the company had 17,000 employees, 3,000 of whom came from Neles. In February 2024, it

5904-558: The treasure shipyard in Nanjing. Shachuan , or 'sand-ships', are ships used primarily for inland transport. However, in recent years, some researchers agree that the treasure ships were more of the Fuchuan type. It is said in vol. 176 of San Guo Bei Meng Hui Bian (三朝北盟汇编) that ships made in Fujian are the best ones. Therefore, the best shipbuilders and laborers were brought from these places to support Zheng He's expedition. The shipyard

5986-612: The waterline, the introduction of copper sheathing as a deterrent to shipworm and fouling, etc. In the early decades of the Industrial Revolution (1760 to 1825) western ship design remained largely based on its traditional pre-industrial designs and materials and yet greatly improved in safety as "the risk of being wrecked for Atlantic shipping fell by one-third, and of foundering by two thirds, reflecting improvements in seaworthiness and navigation respectively." The improvement in seaworthiness has been credited to adopting

6068-467: Was Alfa Laval’s largest acquisition to that point, in order to further expanded the company’s offering of marine equipment. In 2021, Alfa Laval acquired StormGeo , a weather analysis software provider for NOK 3.63 billion ($ 440 million). The use of StormGeo's digital products is increasing the decarbonisation of the industry; since 2018, their use has saved carriers 2.1 million tonnes of fuel, reducing CO2 emissions by 6.2 million tonnes. Also part of

6150-529: Was announced that President and CEO Pasi Laine would be retiring at the end of September 2024. Danish CEO of Mediq , Thomas Hinnerskov, was chosen by Valmet's board of directors to lead the company as the new President and CEO. In October 2024, Velmet announced that is it cutting 112 jobs to improve "profitability and competitiveness of the business operations.". This comes after a net profit of 157 million euros in Q1-Q2 2024. Alfa Laval Alfa Laval AB

6232-473: Was founded the same year. The company’s origin was de Laval’s invention of a continuous milk separator , which he and Lamm had first patented in 1878. Prior to this, dairy producers manually skimmed cream from milk , which was laborious and time-consuming. Capable of handling up to 130 litres per hour, de Laval’s centrifugal separator made this process easier and more efficient. In 1888, AB Separator also began selling pumps to transport skimmed milk from

6314-540: Was much more accomplished than had been thought and has described the distribution of clinker vs. carvel construction in Western Europe (see map [1] ). An insight into shipbuilding in the North Sea/Baltic areas of the early medieval period was found at Sutton Hoo , England, where a ship was buried with a chieftain. The ship was 26 metres (85 ft) long and 4.3 metres (14 ft) wide. Upward from

6396-549: Was not the sole industry utilising Chinese lumber at that time; the new capital was being built in Beijing from approximately 1407 onwards, which required huge amounts of high-quality wood. These two ambitious projects commissioned by Emperor Yongle would have had enormous environmental and economic effects, even if the ships were half the dimensions given in the History of Ming . Considerable pressure would also have been placed on

6478-444: Was the first radical new design, being built entirely of wrought iron. Despite her success, and the great savings in cost and space provided by the iron hull, compared to a copper-sheathed counterpart, there remained problems with fouling due to the adherence of weeds and barnacles. As a result, composite construction remained the dominant approach where fast ships were required, with wooden timbers laid over an iron frame ( Cutty Sark

6560-433: Was too low. Laine had previously managed the business operations of Neles and thought that Valmet could in time have bought more of its stock. Alfa Laval's CEO said that they had bought Neles at a “pandemic discount,” and the front page of the Swedish financial newspaper Dagens Industri celebrated that Sweden would soon own Finland's industry. Valmet started buying Neles stock. By the autumn, Valmet owned nearly 30 per cent of

6642-426: Was under the command of Ministry of Public Works . The shipbuilders had no control over their lives. The builders, commoner's doctors, cooks and errands had lowest social status. The shipbuilders were forced to move away from their hometown to the shipyards. There were two major ways to enter the shipbuilder occupation: family tradition, or apprenticeship. If a shipbuilder entered the occupation due to family tradition,

6724-414: Was unknown when the Chinese people started adopting Southeast Asian (Austronesian) shipbuilding techniques. They may have been started as early as the 8th century, but the development was gradual and the true ocean-going Chinese junks did not appear suddenly. The word "po" survived in Chinese long after, referring to the large ocean-going junks. In September 2011, archeological investigations done at

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