Rooswijk

The final voyage

Rooswijk was built in 1737 for the Amsterdam chamber of the Dutch East India Company (VOC). On her second outbound voyage to Batavia (modern Jakarta), she departed Texel on 8 January 1740 under Captain Daniel Ronzieres with a crew of roughly 237, carrying a cargo dominated by silver — chests of coin and a large quantity of silver ingots intended to fund VOC trade in Asia.

The very night after departure, in a winter gale, Rooswijk was driven onto the Goodwin Sands off the Kent coast — the shifting sandbank English sailors called 'the ship swallower.' The ship broke apart quickly, and there were no known survivors. The wreck disappeared beneath the sands and was not rediscovered for more than two and a half centuries.

What was aboard

VOC shipping records document the vessel and her general silver cargo; a fully itemized coin-and-bar manifest for this specific voyage has not been published, and the account below reflects what has been physically recovered and archaeologically documented.

Silver ingots: Roughly a thousand bars recovered in the 2005 salvage, some bearing VOC-related stamps, intended for the Asian silver trade.

Spanish-American silver coin: Mexican 8 reales, including both cobs and newer milled pillar dollars of the 1720s–1730s, along with transitional klippe coinage.

Gold coins: A quantity of gold coin was also recovered in the 2005 salvage alongside the silver.

Crew possessions: Buttons, buckles, shoe leather, pewter, and navigational instruments documented in the 2017–2018 excavation.

How to collect

Understand Dutch state ownership: As VOC successor, the Dutch state retains legal title to Rooswijk material; market pieces should carry documentation of lawful transfer.

Distinguish coin types precisely: Genuine cargo includes both older-style cobs and newer 1720s–1730s milled pillar dollars — verify against this specific mix.

Ingots should show period stamps: Silver bars recovered in 2005 are documented with VOC-related marks; unmarked bars claimed as Rooswijk material deserve extra scrutiny.

2005 salvage material is the primary market source: Most collector-available Rooswijk material traces to the 2005 Rex Cowan salvage rather than the later research excavation, which was primarily archaeological.