The Merchant Ship and Clues to Its Date
Nanhai I is a Southern Song wooden merchant vessel that sank off Guangdong. Its surviving hull measures approximately 22.1 meters long and 9.35 meters at its widest point. Thirteen transverse bulkheads divide it into fourteen watertight compartments, with additional boards subdividing the interior. The compartments made the hull a series of cargo units and provide a framework for identifying the distribution of different goods. Deeply buried compartments retained densely packed cargo, while much of the deck and stern superstructure had scattered or collapsed, leaving shipboard spaces in differing states of preservation.
The inscription “tenth year of Chunxi” on a brown-glazed jar corresponds to 1183. Researchers have also linked the cyclical date guimao on another porcelain jar to that year in conjunction with artifact dating. Inscriptions primarily date an object’s manufacture, a recorded event, or its circulation; they do not necessarily record the day of the wreck. Placing the sinking in the late twelfth century, in or shortly after 1183, is therefore more defensible. The approximate range 1183–1200 is a chronological placement only: 1200 is not a proven latest possible date for the sinking.
Where a Shipload of Goods Came From
The porcelain cargo includes varied glazes and forms originating in Fujian, Jiangxi, Zhejiang, Guangdong, and other regions. Bottles, jars, boxes, and ewers accompany bowls and plates, indicating that cargo owners assembled goods serving different purposes. Large quantities of iron bars and iron cooking pots show that metal raw materials and finished products were also important cargo: the former could be processed further, while the latter already had a defined usable form. Products of different regions, materials, and functions converged aboard one vessel, revealing the breadth of its trading supply.
Compositional comparisons of Dehua-style qingbai porcelain link many samples more specifically with the Gaide and Longxun–Sanban production zones, although some similarly shaped samples remain difficult to assign to either. Certain ink inscriptions on vessel bases correspond with particular zones, leading researchers to suggest that different cargo owners may have favored particular suppliers. Examining form, composition, and ink markings together refines procurement clues beyond broad kiln names to possible continuing relationships between cargo owners and production areas.
How Goods Were Stowed in the Holds
Deposits inside the compartments reveal particular loading methods: bowls and plates were stacked, small bottles packed tightly both upright and horizontally, and small jars, boxes, and bottles fitted into gaps between larger objects. Some were nested inside larger ceramic containers. Stacking and fitting transformed differences in vessel shape into usable space. Rim diameter, height, and external profile were therefore relevant to stowage, and groups of preserved vessels of different sizes make the compact layout clearly visible.
Large jars served different purposes in different compartments. Research records show porcelain packed inside some jars in compartment eight, while jars in compartments nine and ten were secured in wooden frames, with boards supporting their mouths and without similar porcelain packing. These were consequently interpreted as possible containers for drink or food. One group of vessels served as packaging for commodities; another may have supplied those aboard. Dense cargo occupied most of the hold space, leading researchers to associate the main living areas with the deck and stern superstructure. The holds and upper spaces together provided the setting for the voyage.
Life aboard beyond the Cargo
Fragments of pottery stoves, wooden buckets and basins, and sets of stone grinding slabs and handstones make food storage, cooking, and processing concrete subjects for investigation. The stoves carry soot marks from use, animal bones show burning or chopping marks, and plant remains include plums and chinquapins. These materials illuminate different aspects of preparing food for the voyage: containers served storage, grinding tools relate to grain processing, and marks on cooking equipment and bones record the treatment of ingredients.
Inkstones, ink-inscribed ceramics, and wooden tags provide clues to writing and cargo management, while objects such as wooden combs bring personal routines into view. The same kind of object could be merchandise or a personal possession, and the role of some gold ornaments remains debated. Foreign-style jewelry and varied foods indicate cultural contact, but cannot establish the origins, ethnicity, or beliefs of the entire crew. Managing cargo, preparing meals, and personal care together constituted the ship’s continuing daily activities.
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Viewing a Trading Network through One Ship
Considered together, production origins, cargo markings, and compartment assemblages show how a trading network worked in practice: products from different regions were selected, gathered, identified, and arranged within a limited hull. Several layers of relationships may have connected purchasers, intermediaries, and people aboard. Quanzhou and Guangzhou both figure prominently in relevant research, but the port of origin, final departure port, and destination require separate verification. No complete route has yet been established on this evidence.
Preservation also limits this picture. Burial on the seabed retained parts of the hull and grouped cargo, but the collapse of the deck and stern superstructure altered original positions, while concretions caused by metal corrosion complicated identification. Underwater investigations in 1989–2004 and their formal report established the early evidentiary foundation. After the wreck was raised as a whole in 2007, the hull and surrounding deposits entered a museum for continued excavation and conservation. Records connecting objects with stratigraphy and compartment positions allow researchers to distinguish traces of loading, sinking, and burial, bringing them closer to the actual operation of Song maritime trade.