A Portuguese shipwreck from 1593 is helping researchers date the early rise of China’s famous kraak porcelain, a major export style that later spread across global markets. The new study, led by Laura Valerie Esterhuizen, examined thousands of Chinese porcelain fragments recovered from shipwreck sites along South Africa’s coast.
The findings give archaeologists a rare fixed date for tracing how kraak-style decoration developed during the late Ming dynasty.
The key evidence comes from porcelain linked to the Santo Alberto, a Portuguese ship that sank off South Africa’s Eastern Cape coast in 1593. The vessel ran into severe storms and began taking on water. Crew members threw part of the cargo overboard in an effort to lighten the ship before it grounded near the shore.
That action likely explains why porcelain fragments later appeared across several beaches, including Double Mouth, Haga-Haga and Black Rock. Archaeologists have not found the wreck itself. However, the ceramic styles match the date of the disaster, and no other known Portuguese wreck from the same period has been linked to the area.
A fixed date for a changing style
The Santo Alberto fragments show a clear change from earlier Ming porcelain cargoes. Many of the pieces are thin and feature broad decorative rims divided into panels. The panels contain flowers, leaves, birds, Buddhist symbols, insects and pomegranates.
This panel-based design is a defining feature of kraak porcelain. The style became widely traded during the Wanli period, which lasted from 1573 to 1620. It later became one of the most recognizable forms of Chinese export porcelain in Europe and other overseas markets.
The 1593 sinking provides researchers with an important date because many surviving pieces of kraak porcelain lack a secure archaeological context. In this case, fleet records and historical accounts connect the fragments to a specific voyage and year. That makes the Santo Alberto cargo a valuable reference point for studying the early development of the style.
Some fragments also feature deer, pagodas, and landscape scenes. Deer motifs appear often in the Santo Alberto collection but are missing from earlier shipwreck cargoes examined in the study. Pagoda designs are especially rare. The Santo Alberto site is the only Portuguese wreck location in the research to produce fragments with such architectural imagery.
Earlier wrecks show the shift
The study compared the Santo Alberto finds with porcelain from three earlier Portuguese shipwreck sites. Together, the four sites cover 87 years of maritime trade, from 1506 to 1593.
The earliest fragments came from an unnamed vessel that sank near Vlees Bay in 1506. Those bowls date to the Hongzhi period and feature pale cobalt designs, cloud scrolls, qilin and pine trees set against wide white spaces. The decoration is restrained and reflects the refined style of late 15th-century Jingdezhen production.
Porcelain from the São João and São Bento, which sank in 1552 and 1554, shows a much wider range of designs. The Jiajing-period cargoes include dragons, phoenixes, peacocks, cranes, fish and the traditional “dogs of fu.” Many pieces also carry reign marks and auspicious inscriptions in bright cobalt blue.
By 1593, however, the decoration had become more structured. The Santo Alberto fragments show panels spreading from the rim toward the center of bowls and dishes. That layout marks the transition toward the mature kraak style.
Shipwrecks preserve trade history
The researchers examined about 12,500 porcelain fragments from museums and private collections. They studied glaze, cobalt color, decoration and workmanship, then compared the pieces with established Chinese ceramic periods.
The cargoes also reveal how Portuguese merchants moved Chinese porcelain through India and around southern Africa on the way to Europe. Porcelain was privately traded and often stored low in ships, where its weight made it useful as ballast.
The study concludes that shipwreck ceramics can help date unidentified wrecks and refine the timeline of Chinese export production. The Santo Alberto finds are especially important because they place early kraak-style porcelain in a securely dated maritime setting.
Further research could compare the fragments with other shipwreck cargoes and test their pigments and glazes. That work may show more precisely how Chinese workshops adapted their designs as overseas demand grew during the late Ming dynasty.
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