De Duinbeek started her third outward trip on May 20, 1736 from Texel destination Batavia. From there it went back to the Netherlands on February 6, 1737.

She arrived at Robben Island at the entrance to Table Bay (Cape Town) on 12 May. It was not until May 16 that she was able to anchor in the bay itself.*

There were already 8 DEIC East indiaman: Iepenburg, Goudriaan, Flora, Paddenburg, Buis, Westerwijk, Papenburg and Rodenrijs. On May 20, all ships were ready to leave in convoy for the Netherlands.

Disaster May 21, 1737
At 8 o'clock the next morning the masters of the fleet were on land to collect the last papers, letters and instructions from the Governor of the Cape.

When the wind became stronger and stronger, the skippers of the ships could not return. The first emergency shots sounded around 11:00 in the morning. The first ship to lose its anchor and become stranded and shattered by the surf was the Iepenrode. Subsequently, a similar fate befell all ships in the roadstead during the course of the day:

The Duinbeek got of her anckers at 5:30 PM and stranded head on near the mouth of Soute Rivier . There she was smashed to peaces by the sea. 

The ship Papenburg was the only ship miraculously spared during the storm. She left for the Republics on May 30 and arrived in Texel three months later without any further problems.

Loss
A total of nine ships sank that day, causing a total of 208 lives to be lost and 531 men survived the disaster.* Ultimately, the VOC lost 1,921,532 guilders due to a single storm. (Daily register 29-6-1738)

The Duinbeek was built in Middelburg in 1727

• Lesa la Grange, Martijn Manders, Briege Williams, John Gribble and Leon Derksen (2024).
  Dutch Shipwrecks in South African Waters: A Brief History of Sites, Stores and Archives [Unpublished].
• Dagregister kaap 21-5-1737.
• 1.11.06.18/invnr/87.