Browsing by Subject "nautical archaeology"
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Item A Digital Library Approach to the Reconstruction of Ancient Sunken Ships(2011-10-21) Monroy Cobar, Carlos A.Throughout the ages, countless shipwrecks have left behind a rich historical and technological legacy. In this context, nautical archaeologists study the remains of these boats and ships and the cultures that created and used them. Ship reconstruction can be seen as an incomplete jigsaw reconstruction problem. Therefore, I hypothesize that a computational approach based on digital libraries can enhance the reconstruction of a composite object (ship) from fragmented, incomplete, and damaged pieces (timbers and ship remains). This dissertation describes a framework for enabling the integration of textual and visual information pertaining to wooden vessels from sources in multiple languages. Linking related pieces of information relies on query expansion and improving relevance. This is accomplished with the implementation of an algorithm that derives relationships from terms in a specialized glossary, combining them with properties and concepts expressed in an ontology. The main archaeological sources used in this dissertation are data generated from a 17th-century Portuguese ship, the Pepper Wreck, complemented with information obtained from other documented and studied shipwrecks. Shipbuilding treatises spanning from the late 16th- to the 19th-centuries provide textual sources along with various illustrations. Additional visual materials come from a repository of photographs and drawings documenting numerous underwater excavations and surveys. The ontology is based on a rich database of archaeological information compiled by Mr. Richard Steffy. The original database was analyzed and transformed into an ontological representation in RDF-OWL. Its creation followed an iterative methodology which included numerous revisions by nautical archaeologists. Although this ontology does not pretend to be a final version, it provides a robust conceptualization. The proposed approach is evaluated by measuring the usefulness of the glossary and the ontology. Evaluation results show improvements in query expansion across languages based on Blind Relevance Feedback using the glossary as query expansion collection. Similarly, contextualization was also improved by using the ontology for categorizing query results. These results suggest that related external sources can be exploited to better contextualize information in a particular domain. Given the characteristics of the materials in nautical archaeology, the framework proposed in this dissertation can be adapted and extended to other domains.Item Eighteenth-century colonial American merchant ship construction(Texas A&M University, 2005-02-17) VanHorn, Kellie MichellePast research on eighteenth-century ships has primarily taken one of two avenues, either focusing on naval warship construction or examining the merchant shipping industry as a whole in terms of trends and economics. While these areas are important to pursue, comparatively little is known about actual construction techniques used on the ordinary merchant vessels of the period. Most modern sources emphasize hull design and lines drawings; contemporary sources take a similar direction, explaining the theory of ship design but often leaving out how to put the ship together. In recent years, however, new information has come to light through archaeological excavations regarding Anglo-American merchant ship construction. In this study, several of these shipwrecks were examined in light of economic factors and the literary evidence from the period in an attempt to gain a better understanding of colonial American merchant ship construction in the eighteenth century. While the data set was not large enough to make conclusive statements, this type of comparative analysis should begin to establish a framework for the interpretation of future shipwreck excavations.Item Extracting Cultural Information from Ship Timber(2012-02-14) Creasman, PearceThis dissertation is rooted in one general question: what can the wood from ships reveal about the people and cultures who built them? Shipwrecks are only the last chapter of a complex story, and while the last fifty years of nautical archaeology have managed to rewrite a number of these chapters, much of the information unrelated to a ship?s final voyage remains a mystery. However, portions of that mystery can be exposed by an examination of the timbers. An approach for the cultural investigation of ship timbers is presented and attempts are made to establish the most reliable information possible from the largely unheralded treasures of underwater excavations: timbers. By introducing the written record, iconographic record, and the social, economic, and political factors to the archaeological record a more complete analysis of the cultural implications of ship and boat timbers is possible. I test the effectiveness of the approach in three varied casestudies to demonstrate its limits and usefulness: ancient Egypt?s Middle Kingdom, the Mediterranean under Athenian influence, and Portugal and the Iberian Peninsula during the Discoveries. The results of these studies demonstrate how ship timbers can be studied in order to better understand the people who built the vessels.Item His Majesty's hired transport schooner Nancy(Texas A&M University, 2005-08-29) Sabick, Christopher RobertIn 1997 a group of archaeologists from Texas A&M University's Nautical Archaeology Program traveled to Wasaga Beach, Ontario to document the hull remains of the eighteenth-century schooner Nancy. In 1927, the schooner was recovered from the banks of an island in the Nottawasaga River, near its confluence with Lake Huron. The hull is now on display in the Nancy Island Historic Site. Despite being available to the public for more than 75 years, the 1997 documentation was the first to thoroughly record the construction of the vessel. In addition to archaeological investigation, historical research was carried out to further our understanding of Nancy's commercial and naval career. The archaeological data reveal a schooner that was built by talented shipwrights using the fine timber harvested around the Great Lakes in the eighteenth-century. This study adds a considerable amount of new information to the otherwise scanty base of knowledge available on the construction of early Great Lakes sailing vessels. Historical research shows that Nancy and her crews were participants in many important events that shaped the Great Lakes Region. From her construction in Detroit in 1789, Nancy was employed in the fur trade. As tensions flared between Great Britain and the United States in 1812, Nancy was utilized as an armed transport for the British forces around the lakes. in August of 1814, the schooner was trapped in the Nottawasaga River by a strong American naval force. Nancy's commander set fire to the vessel to deny it to the enemy. This thesis examines the construction details and history of the schooner Nancy in detail. Preliminary chapters will provide the historical context for the vessel and describe Nancy's long journey that ended at the Nancy Island Historic Site. The second half of the thesis describes the construction of the schooner and compares it with other contemporary vessels. The study concludes that Nancy's hull represents an eighteeth-century construction tradition modified for use on the Great Lakes, and also demonstrates the vessel's dual roles as trader and military transport.Item Lading of the Late Bronze Age ship at Uluburun(2012-08-29) Lin, Shih-Han SamuelThe Uluburun shipwreck was discovered in 1982 when a Turkish sponge diver informed the Institute of Nautical Archaeology (INA) of his discovery of metal biscuits with ears. INA archaeologists recognized this as a description of oxhide ingots, a clear indication of a Late Bronze Age site. This find was of considerable interest as very little is known about seafaring, long distance trade, and ship construction during the Late Bronze Age, except for a glimpse provided by the Cape Gelidonya shipwreck excavated in 1960 by George Bass. The site at Uluburun revealed only a handful of disarticulated ship fragments; nevertheless, a meticulous study of these timbers and the distribution of the cargo and shipboard items on the seabed resulted in a hypothetical, but carefully guided, reconstruction of the ship and the lading of its cargo. The artifacts recovered from the Uluburun shipwreck are unlike those discovered on land in quality of preservation as well as the quantity found. Items pertinent to this study include 354 copper oxhide ingots (approximately 10 tons), 152 copper bun ingots (nearly 1 ton), 110 tin ingot fragments (approximately 1 ton), 175 glass ingots (approximately 0.3 tons), 150 Canaanite jars (approximately 2 tons if filled with water), 10 large storage jars (pithoi) (approximately 3.5 tons if filled with water), approximately 51 Canaanite pilgrim flasks, 24 stone anchors (3.3 tons), nearly 1 ton of ballast stones, and the hull remains itself. Two computer programs, Rhinoceros and PHASER, were used to visually model the artifacts and ship in three-dimensions and to systematically test various hull shapes and lading arrangements in a range of hydrostatic conditions. Tests showed that a hull measuring 15 x 5 x 2 m would be capable of carrying the estimated 20 tons of cargo and shipboard items recovered from the wreck at a draft of 1 m, with sufficient freeboard to allow six passengers to stand on one side of the vessel without compromising the stability of the ship.Item 'Rocks and storms I'll fear no more': Anglo-American maritime memorialization, 1700-1940(Texas A&M University, 2004-09-30) Stewart, David JamesNautical archaeology has made remarkable advances since its inception half a century ago, but one area in need of more attention is the examination of cultural aspects of seafaring. This dissertation advances understanding of eighteenth- through early-twentieth century British and American maritime culture by exploring traditional memorialization practices. Interpretations are based primarily on analysis of 412 maritime memorials recorded during two archaeological surveys in Great Britain and the United States. In addition, primary accounts from the Age of Sail are utilized to place maritime memorialization into its proper cultural and historical context. Research reveals three major themes in Anglo-American maritime memorialization. First, memorials show a striking concern for the dangers and hardships of life at sea. Numerous memorials describe the perils of the natural world and the group values that mariners developed to cope with the ever-present possibility of sudden death. Such values include attention to duty, courage, group loyalty, self-sacrifice, and pride. Second, maritime communities faced the problem of commemorating those who never returned from the sea. Many sailors were lost at sea or died aboard ship or in distant lands. In the vast majority of such cases, the body was never returned home, and many did not receive proper burial. As a result, family members and fellow sailors created memorials to honor the lost and to symbolically lay the deceased to rest. Evidence indicates, however, that such attempts were not entirely satisfactory. Many epitaphs lament the fact that empty graves cannot provide an adequate substitute for missing bodies. Finally, investigation revealed a significant increase in religious sentiment on maritime memorials from the mid-nineteenth century until the end of the Age of Sail. It is suggested that the increase in maritime religious sentiment was linked to nineteenth-century religious reform movements. The prevalence of religious imagery and inscriptions on maritime memorials during this time, however, probably does not indicate that most sailors became religious. Rather, most religious maritime memorials were erected by sailors' families. This suggests that maritime families turned to religion as a source of comfort when faced with the deaths of loved ones at sea.Item The history and development of caravels(2009-05-15) Schwarz, George RobertAn array of ship types was used during the European Age of Expansion (early 15th to early 17th centuries), but one vessel in particular emerges from the historical records as a harbinger of discovery: the caravel. The problem is that little is known about these popular ships of discovery, despite the fair amount of historical evidence that has been uncovered. How big were they? How many men did it take to operate such a vessel? What kind of sailing characteristics did they have? How and by whom were they designed? Where did they originate and how did they develop? These questions cannot be answered by looking at the historical accounts alone. For this reason, scholars must take another approach for learning about caravels by examining additional sources, namely ancient shipbuilding treatises, archaeological evidence, surviving archaic shipbuilding techniques, and iconographic representations from the past. Information gained from the available sources reveals many of the caravel?s characteristics through time. This ship type outclassed its contemporaries during the age of exploration because of its highly adaptive characteristics. These traits were, principally, its shallow draught, speed, maneuverability, and ability to sail close to the wind. This combination of attributes made the caravel the ideal ship for reconnaissance along the rocky African coastline, as well as for making the transatlantic voyages to the New World. It was built in a Mediterranean way during its post-medieval phases, a method that still survives in some parts of the world today. During the Age of Discovery (ca. 1430 to 1530), the caravel sat low in the water, had one sterncastle, and was either lateen-rigged or had a combination of square and lateen sails. This vessel reflects the advanced shipbuilding technology that existed in Europe at this time, and played and important role in the voyages which allowed the Europeans to expand their territories around the world. The results of the studies presented in this thesis provide a history and development of the caravel, which was gradual and often obscure. What has been gained from this work is a body of information that can be applied to other studies about ancient seafaring, and can serve as a starting point for further research.Item The Hull Remains of the Late Hellenistic Shipwreck at K?z?lburun, Turkey(2012-11-13) Littlefield, Johnny 1967-At least 64 shipwrecked stone transports have been discovered throughout the Mediterranean region dating primarily to the Roman period. Few have been excavated and even fewer have had more than scant hull remains recovered. None have been thoroughly examined with a focus on the construction of the vessel. Consequently, little is known about stone transport or the construction of stone transport ships from archaeological contexts or ancient historical sources. In 1993, on an Institute of Nautical Archaeology (INA) shipwreck survey along the western Turkish coast, the K?z?lburun column wreck was discovered. At present, excavated ceramics suggest the date of the K?z?lburun shipwreck lies in the first century B.C.E.; the Late Hellenistic period (323-31 BCE). Analyses of the marble consignment have revealed that the ship carried a primary cargo of architectural elements quarried on the island of Proconnesus. Subsequent investigations point to a likely destination of the ancient city of Claros on the Karian coast of Asia Minor (modern day Turkey). Between 2005 and 2011 excavations were carried out on the column wreck by an international team of archaeologists, INA staff members, and graduate students led by Donny Hamilton and Deborah Carlson, both of Texas A&M University. The 2005 excavation season produced the first, albeit scant, hull remains, with more timbers being recovered between 2006 and 2009. The most substantial hull remains were recovered in 2007 following the removal of the eight large marble column drums to a more remote part of the site. The intense weight and pressure exerted by the heavy cargo on the hull remains aided the preservation by creating an environment that was unfavorable for wood consuming organisms and other biological agents. Recording and detailed examination of the hull remains was conducted during the summer of 2008, fall of 2009, and fall of 2010. This thesis presents the analyses and interpretation of the K?z?lburun ship?s wooden hull remains and copper fasteners. Additionally, after discussing the methods of recording and cataloging of the ship?s extant remains, I place the ship in its historical and technological contexts, demonstrating that it was of contemporaneously common dimensions and construction, as opposed to a more robust construction that is often assumed of ancient stone-carrying vessels.Item The Passenger Steamboat Phoenix: An Archaeological Study of Early Steam Propulsion in North America(2012-08-31) Schwarz, George 1977-The advent of steam contributed heavily to the economic transformation of early America, facilitating trade through the transportation of goods along the country?s lakes, rivers, and canals. Serious experimentation with steam navigation began in the last quarter of the 18th century. By the turn of the 19th century, fledgling US steamboat companies vied for control of navigation rights in the country?s northern waterways. The second steamboat to be launched on Lake Champlain, Phoenix, operated as a passenger steamer between 1815 and 1819, when she caught fire and sank in the lake. The intention of this study is to advance our knowledge of early steamboat design and use in the United States through the archaeological investigation of the country?s earliest-known steamboat wreck. As little is known about the development of these early steam vessels, the study of Phoenix offers a unique opportunity to gain new information related to steamboat design in the early 19th century as well as a glimpse into life on the lakes and rivers of North America during this era. The dissertation presents detailed information on Phoenix?s construction, operation, and sinking based on historical and archaeological analysis and interpretation. In combination with the available archival record and analytical comparisons with steamboats of similar size and age, a more comprehensive understanding of the developmental phases of steam travel and its impact on early America can be gained.