Seaplanes involved in rescue 31/8/40-1/9/40

[Brian]

Hi guys

On the night of 31 August/1 September 1940, three RN destroyers (Express, Esk and Ivanhoe) fell foul of minefield NW of Texel. Although many casualties, many survivors were rescued by German craft including, I believe, seaplanes - presumably He59s and Do18s.

Can any of our experts throw any light on this tragic night, particularly of the seaplanes involved, their units, numbers of survivors rescued?

Cheers
Brian