These are indeed great photos, thanks to Paul de Haan for sharing the link.
Excuse my ignorance, but I don't recognise the ship in the first 3 photos - can someone enlighten me?
https://www.flickr.com/photos/141014440@N05/sets/72177720305022052/with/52610602285/
I thought it might be 'De Hoop', but the later photo of that ship shows it is different.