Naval operations of the Dutch East Company at Japan according to the Generale Missive dated 5 December 1742

The Gunterstein and Westhoven departed towards Japan with a cargo valued ƒ 246.428. Lacking enough sapan wood, was 40.000 lb Bangka tin and 50.000 lb lead send. Both ships returned safely 1 December, despite a storm underway. Of the 17 at Nagasaki arrived Chinese junks returned 14 with 15.058 casks copper bars.

Source
J. van Goor. Generale Missiven van Gouverneurs-Generaal en Raden aan Heren XVII der Verenigde Oostindische Compagnie. Deel X: 1737-1743. The Hague, 2004, p. 874-876.