Junk (ship)


A junk is a type of Chinese sailing ship with fully battened sails. They were developed during the Song dynasty based on Austronesian ship designs, examples of which have been trading with the Eastern Han dynasty since the 2nd century AD. They continued to evolve in the later dynasties, and were predominantly used by Chinese traders throughout Southeast Asia. They were found, and in lesser numbers are still found, throughout Southeast Asia and India, but primarily in China. Found more broadly today is a growing number of modern recreational junk-rigged sailboats. Chinese junks referred to many types of coastal or river ships. They were usually cargo ships, pleasure boats, or houseboats. They vary greatly in size and there are significant regional variations in the type of rig, however they all employ fully battened sails.
The term "junk" was also used in the colonial period to refer to any large to medium-sized ships of the Austronesian cultures in Island Southeast Asia, with or without the junk rig. Examples include the Indonesian and Malaysian jong, the Philippine lanong, and the Maluku kora kora.

Etymology

Views diverge on whether the origin of the word is from a dialect of Chinese, or from a Javanese word. The term may stem from the Chinese chuán , also based on and pronounced as in the Minnan variant of Chinese, or zhōu, the old word for a sailing vessel. The modern Standard Chinese word for an ocean-going wooden cargo vessel is cáo.
Pierre-Yves Manguin and Zoetmulder, amongst others, points to an Old Javanese origin, in the form of "jong". The word can be traced from an Old Javanese inscription in the 9th century. It entered the Malay and Chinese languages by 15th century, where a Chinese word list identifies it as Malay word for ship. The Malay Maritime Code, first drawn up in the late 15th century, uses jong frequently as the word for freight ships. European writings from 1345 through 1601 use a variety of related terms, including jonque, ioncque, joanga or juanga, junco, and jonk. These terms were applied to all large ships in Southeast Asia, not only to Chinese ships.
The origin of the word "junk" in the English language, can be traced to the Potuguese word junco, which is rendered from the Arabic word j-n-k. This word comes from the fact that the Arabic script cannot represent the digraph "ng". The word was used to denote both Javanese/Malay ship and Chinese ship, even though the two were markedly different vessels. After the disappearance of jongs in the 17th century, the meaning of "junk", which until then was used as a transcription of the word "jong" in Malay and Javanese, changed its meaning to exclusively Chinese ship only.

Construction

The historian Herbert Warington Smyth considered the junk as one of the most efficient ship designs, stating that "As an engine for carrying man and his commerce upon the high and stormy seas as well as on the vast inland waterways, it is doubtful if any class of vessel… is more suited or better adapted to its purpose than the Chinese or Indian junk, and it is certain that for flatness of sail and handiness, the Chinese rig is unsurpassed."

Sails

The sail of Chinese junks is an adoption of the Malay junk sail, which used vegetable matting attached to bamboo battens, a practice originated from South East Asia. The full-length battens keep the sail flatter than ideal in all wind conditions. Consequently, their ability to sail close to the wind is poorer than other fore-and-aft rigs.
on a tour, seated prominently on the deck of a junk ship

Hull

Classic junks were built of softwoods with the outside shape built first. Then multiple internal compartment/bulkheads accessed by separate hatches and ladders, reminiscent of the interior structure of bamboo, were built in. Traditionally, the hull has a horseshoe-shaped stern supporting a high poop deck. The bottom is flat in a river junk with no keel, so that the boat relies on a daggerboard, leeboard or very large rudder to prevent the boat from slipping sideways in the water. Ocean-going junks have a curved hull in section with a large amount of tumblehome in the topsides. The planking is edge nailed on a diagonal. Iron nails or spikes have been recovered from a Canton dig dated to circa 221 BC. For caulking the Chinese used a mix of ground lime with Tung oil together with chopped hemp from old fishing nets which set hard in 18 hours, but usefully remained flexible. Junks have narrow waterlines which accounts for their potential speed in moderate conditions, although such voyage data as we have indicates that average speeds on voyage for junks were little different from average voyage speeds of almost all traditional sail, i.e. around 4–6 knots. The largest junks, the treasure ships commanded by Ming dynasty Admiral Zheng He, were built for world exploration in the 15th century, and according to some interpretations may have been over in length, or larger. This conjecture was based on the size of a rudder post that was found and misinterpreted, using formulae applicable to modern engine powered ships. More careful analysis shows that the rudder post that was found is actually smaller than the rudder post shown for a 70' long Pechili Trader in Worcester's "Junks and Sampans of the Yangtze".
Another characteristic of junks, interior compartments or bulkheads, strengthened the ship and slowed flooding in case of holing. Ships built in this manner were written of in Zhu Yu's book Pingzhou Table Talks, published by 1119 during the Song dynasty. Again, this type of construction for Chinese ship hulls was attested to by the Moroccan Muslim Berber traveler Ibn Battuta, who described it in great detail. Although some historians have questioned whether the compartments were watertight, most believe that watertight compartments did exist in Chinese junks because although most of the time there were small passageways between compartments, these could be blocked with stoppers and such stoppers have been identified in wrecks. All wrecks discovered so far have limber holes; these are different from the free flooding holes that are located only in the foremost and aftermost compartments, but are at the base of the transverse bulkheads allowing water in each compartment to drain to the lowest compartment, thus facilitating pumping. It is believed from evidence in wrecks that the limber holes could be stopped either to allow the carriage of liquid cargoes or to isolate a compartment that had sprung a leak.
Benjamin Franklin wrote in a 1787 letter on the project of mail packets between the United States and France:
In 1795, Sir Samuel Bentham, inspector of dockyards of the Royal Navy, and designer of six new sailing ships, argued for the adoption of "partitions contributing to strength, and securing the ship against foundering, as practiced by the Chinese of the present day". His idea was not adopted. Bentham had been in China in 1782, and he acknowledged that he had got the idea of watertight compartments by looking at Chinese junks there. Bentham was a friend of Isambard Brunel, so it is possible that he had some influence on Brunel's adoption of longitudinal, strengthening bulkheads in the lower deck of the. Bentham had already by this time designed and had built a segmented barge for use on the Volga River, so the idea of transverse hull separation was evidently in his mind. Perhaps more to the point, there is a very large difference between the transverse bulkheads in Chinese construction, which offer no longitudinal strengthening, and the longitudinal members which Brunel adopted, almost certainly inspired by the iron bridge and boiler engineering in which he and his contemporaries in iron shipbuilding innovation were most versed.
Due to the numerous foreign primary sources that hint to the existence of true watertight compartments in junks, historians such as Joseph Needham proposed that the limber holes were stopped up as noted above in case of leakage. He addresses the quite separate issue of free-flooding compartments on pg 422 of Science and Civilisation in Ancient China:
More to the point wet wells were apparent in Roman small craft of the 5th century CE.

Leeboards and centerboards

s and centerboards, used to stabilize the junk and to improve its capability to sail upwind, are documented from a 759 AD book by Li Chuan. The innovation was adopted by Portuguese and Dutch ships around 1570. Junks often employ a daggerboard that is forward on the hull which allows the center section of the hull to be free of the daggerboard trunk allowing larger cargo compartments. Because the daggerboard is located so far forward, the junk must use a balanced rudder to counteract the imbalance of lateral resistance.
Other innovations included the square-pallet bilge pump, which was adopted by the West during the 16th century for work ashore, the western chain pump, which was adopted for shipboard use, being of a different derivation. Junks also relied on the compass for navigational purposes. However, as with almost all vessels of any culture before the late 19th century, the accuracy of magnetic compasses aboard ship, whether from a failure to understand deviation or poor design of the compass card, meant that they did little to contribute to the accuracy of navigation by dead reckoning. Indeed, a review of the evidence shows that the Chinese embarked magnetic pointer was probably little used for navigation. The reasoning is simple. Chinese mariners were as able as any and, had they needed a compass to navigate, they would have been aware of the almost random directional qualities when used at sea of the water bowl compass they used. Yet that design remained unchanged for some half a millennium. Western sailors, coming upon a similar water bowl design very rapidly adapted it in a series of significant changes such that within roughly a century the water bowl had given way to the dry pivot, a rotating compass card a century later, a lubberline a generation later and gimbals seventy or eighty years after that. These were necessary because in the more adverse climatic context of north western Europe, the compass was needed for navigation. Had similar needs been felt in China, Chinese mariners would also have come up with fixes. They didn't.

Steering

Junks employed stern-mounted rudders centuries before their adoption in the West for the simple reason that Western hull forms, with their pointed sterns, obviated a centreline steering system until technical developments in Scandinavia created the first, iron mounted, pintle and gudgeon 'barn door' western examples in the early 12th century CE. A second reason for this slow development was that the side rudders in use were, contrary to a lot of very ill-informed opinion, extremely efficient. Thus the junk rudder's origin, form and construction was completely different in that it was the development of a centrally mounted stern steering oar, examples of which can also be seen in Middle Kingdom Egyptian river vessels. It was an innovation which permitted the steering of large ships and due to its design allowed height adjustment according to the depth of the water and to avoid serious damage should the junk ground. A sizable junk can have a rudder that needed up to twenty members of the crew to control in strong weather. In addition to using the sail plan to balance the junk and take the strain off the hard to operate and mechanically weakly attached rudder, some junks were also equipped with leeboards or dagger boards. The world's oldest known depiction of a stern-mounted rudder can be seen on a pottery model of a junk dating from before the 1st century AD, though some scholars think this may be a steering oar; a possible interpretation given is that the model is of a river boat that was probably towed or poled.
From sometime in the 13th to 15th centuries, many junks began incorporating "fenestrated" rudders, probably adopted to lessen the force needed to direct the steering of the rudder.
The rudder is reported to be the strongest part of the junk. In the Tiangong Kaiwu "Exploitation of the Works of Nature", Song Yingxing wrote, "The rudder-post is made of elm, or else of langmu or of zhumu." The Ming author also applauds the strength of the langmu wood as "if one could use a single silk thread to hoist a thousand jun or sustain the weight of a mountain landslide."

History

2nd century (Han dynasty)

Chinese maritime shipping did not exist until the late Song dynasty. However, large Austronesian trading ships docking in Chinese ports with as many as four sails were recorded by scholars as early as the Han Dynasty. They called them the kunlun bo or kunlun po. They were booked by Chinese Buddhist pilgrims for passage to Southern India and Sri Lanka. Bas reliefs of Sailendran and Srivijayan large merchant ships with various configurations of tanja sails and outriggers are also found in the Borobudur temple, dating back to the 8th century CE.
The 3rd century book "Strange Things of the South" by Wan Chen describes one of these Austronesian ships as being capable of carrying 700 people together with 260 tons of cargo. He explains the ships' sail design as follows:
A 260 CE book by K'ang T'ai described ships with seven sails called po for transporting horses that could travel as far as Syria. He also made reference to monsoon trade between the islands, which took a month and a few days in a large po.'', by Zhang Zeduan

10–13th century (Song dynasty)

The trading dynasty of the Song developed the first junks based on Southeast Asian ships. By this era they also have adopted the Malay junk sail. The ships of the Song, both mercantile and military, became the backbone of the navy of the following Yuan dynasty. In particular the Mongol invasions of Japan, as well as the Mongol invasion of Java, essentially relied on recently acquired Song naval capabilities. Worcester estimates that Yuan junks were 11 m in beam and over 30 m long. In general they had no keel, stempost, or sternpost. They did have centreboards, and watertight bulkhead to strengthen the hull, which added great weight. Further excavations showed that this type of vessel was common in the 13th century. By using the ratio between number of soldiers and ships in both invasions, it can be concluded that each ship may carry 20-70 men.

14th century (Yuan dynasty)

The enormous dimensions of the Chinese ships of the Medieval period are described in Chinese sources, and are confirmed by Western travelers to the East, such as Marco Polo, Ibn Battuta and Niccolò da Conti. According to Ibn Battuta, who visited China in 1347:

15–17th century (Ming dynasty)

From the mid-15th to early 16th century, all Chinese maritime trading was banned under the Ming Dynasty. The shipping and ship-building knowledge acquired during the Song and Yuan dynasties gradually declined during this period.

Expedition of Zheng He

The largest junks ever built were possibly those of Admiral Zheng He, for his expeditions in the Indian Ocean, although this is disputed as no contemporary records of the sizes of Zheng He's ships are known. Instead the dimensions are based on Sanbao Taijian Xia Xiyang Ji Tongsu Yanyi, a romanticized version of the voyages written by nearly two centuries later. Maodeng's novel describes Zheng He's ships as follows:
Some recent research suggests that the actual length of the biggest treasure ships may have been between long and wide, while others estimate them to be in length.

Capture of Taiwan

In 1661, a naval fleet of 400 junks and 25,000 men led by the Ming loyalist Zheng Chenggong, arrived in Taiwan to oust the Dutch from Zeelandia. Following a nine-month siege, Cheng captured the Dutch fortress Fort Zeelandia. A peace treaty between Koxinga and the Dutch Government was signed at Castle Zeelandia on February 1, 1662, and Taiwan became Koxinga's base for the Kingdom of Tungning.

Javanese

The physical description of Javanese junk differed from Chinese junk. It was made of very thick wood, and as the ship got old, it was fixed with new boards, with four closing boards, stacked together. The rope and the sail was made with woven rattan. The jong was made using jaty/jati wood at the time of this report, at that time Chinese junks are using softwood as the main material. The jong's hull is formed by joining planks to the keel and then to each other by wooden dowels, without using either a frame, nor any iron bolts or nails. The planks are perforated by an auger and inserted with dowels, which remains inside the fastened planks, not seen from the outside. On some of the smaller vessels parts may be lashed together with vegetable fibers. The vessel was similarly pointed at both ends, and carried two oar-like rudders and lateen-rigged sails, but it may also use junk sail, a sail of Malay origin. It differed markedly from the Chinese vessel, which had its hull fastened by strakes and iron nails to a frame and to structurally essential bulkheads which divided the cargo space. The Chinese vessel had a single rudder on a transom stern, and they had flat bottoms without keels.
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Encounters with giant jongs were recorded by Western travelers. Giovanni da Empoli said that the junks of Java were no different in their strength than a castle, because the three and four boards, layered one above the other, could not be harmed with artillery. They sailed with their women, children, and families, where everyone mainly keeping to their respective rooms. Portuguese recorded at least two encounters with large Djongs, one was encountered off the coast of Pacem and the other was owned by Pati Unus, who went on to attack Malacca in 1513. Characteristics of the 2 ships were similar, both were larger than Portuguese ship, built with multiple plankings, resistant to cannon fire, and had two oar-like rudders on the side of the ship. At least Pati Unus' jong was equipped with three layers of sheathing which the Portuguese said over one cruzado in thickness each. The Chinese banned foreign ships from entering Guangzhou, fearing the Javanese or Malay junks would attack and capture the city, because it is said that one of these junk would rout twenty Chinese junks.
Main production location of Djong was mainly constructed in two major shipbuilding centres around Java: north coastal Java, especially around Rembang-Demak and Cirebon; and the south coast of Borneo and adjacent islands. A common feature of these places was their accessibility to forests of teak, this wood was highly valued because of its resistance to shipworm, whereas Borneo itself would supply ironwood. Pegu, which is a large shipbuilding port at the 16th century, also produced jong, built by Javanese who resided there.

Accounts of medieval travellers

in relating his travels in Asia between 1419 and 1444, describes huge junks of about 2,000 tons in weight:
Also, in 1456, the Fra Mauro map described the presence of junks in the Indian Ocean as well as their construction:
Fra Mauro further explains that one of these junks rounded the Cape of Good Hope and travelled far into the Atlantic Ocean, in 1420:

Asian trade

Chinese junks were used extensively in Asian trade during the 16th and 17th century, especially to Southeast Asia and to Japan, where they competed with Japanese Red Seal Ships, Portuguese carracks and Dutch galleons. Richard Cocks, the head of the English trading factory in Hirado, Japan, recorded that 50 to 60 Chinese junks visited Nagasaki in 1612 alone.
These junks were usually three masted, and averaging between 200 and 800 tons in size, the largest ones having around 130 sailors, 130 traders and sometimes hundreds of passengers.

19th century (Qing dynasty)

Large, ocean-going junks played a key role in Asian trade until the 19th century. One of these junks, Keying, sailed from China around the Cape of Good Hope to the United States and England between 1846 and 1848. Many junks were fitted out with carronades and other weapons for naval or piratical uses. These vessels were typically called "war junks" or "armed junks" by Western navies which began entering the region more frequently in the 18th century. The British, Americans and French fought several naval battles with war junks in the 19th century, during the First Opium War, Second Opium War and in between.
At sea, junk sailors co-operated with their Western counterparts. For example, in 1870 survivors of the English barque Humberstone shipwrecked off Formosa, were rescued by a junk and landed safely in Macao.

20th century

In 1938, E. Allen Petersen escaped the advancing Japanese armies by sailing a junk, Hummel Hummel, from Shanghai to California with his wife Tani and two White Russians. In 1939, Richard Halliburton was lost at sea with his crew while sailing a specially constructed junk, Sea Dragon, from Hong Kong to the World Exposition in San Francisco.
In 1955, six young men sailed a Ming dynasty-style junk from Taiwan to San Francisco. The four-month journey aboard the Free China was captured on film and their arrival into San Francisco made international front-page news. The five Chinese-born friends saw an advertisement for an international trans-Atlantic yacht race, and jumped at the opportunity for adventure. They were joined by the then US Vice-Consul to China, who was tasked with capturing the journey on film. Enduring typhoons and mishaps, the crew, having never sailed a century-old junk before, learned along the way. The crew included Reno Chen, Paul Chow, Loo-chi Hu, Benny Hsu, Calvin Mehlert and were led by skipper Marco Chung. After a journey of, the Free China and her crew arrived in San Francisco Bay in fog on August 8, 1955. Shortly afterward the footage was featured on ABC television's Bold Journey travelogue. Hosted by John Stephenson and narrated by ship's navigator Paul Chow, the program highlighted the adventures and challenges of the junk's sailing across the Pacific, as well as some humorous moments aboard ship.
In 1959 a group of Catalan men, led by Jose Maria Tey, sailed from Hong Kong to Barcelona on a junk named Rubia. After their successful journey this junk was anchored as a tourist attraction at one end of Barcelona harbor, close to where La Rambla meets the sea. Permanently moored along with it was a reproduction of Columbus' caravel Santa Maria during the 1960s and part of the 1970s.
In 1981, Christoph Swoboda had a 65 feet Bedar built by the boatyard of Che Ali bin Ngah on Duyong island in the estuary of the Terengganu river on the East coast of Malaysia. The Bedar is one of the two types of Malay junk schooners traditionally built there. He sailed this junk with his family and one friend to the Mediterranean and then continued with changing crew to finally finish a circumnavigation in 1998. He sold this vessel in 2000 and in 2004 he started to build a new junk in Duyong with the same craftsmen: the Pinas Naga Pelangi, in order to help keep this ancient boat building tradition alive. This boat finished to be fitted out in 2010 and is working as a charter boat in the Andaman and the South China Sea.