The fishing vessel Pia was towing the yacht Albatross III ( Netherlands) when she struck a mine in the North Sea off Gravelines, France. with the loss of six of her seven crew. Four people were killed aboard Albatross III, which rescued the sole survivor from Pia.
- Haersolte, J.W.J. van (1947).
Scheepsrampen in oorlogstijd.
J.F. Duwaer & Zonen, Amsterdam.
- Wiki list of shipwrecks May 1940.