Our final clue was a sneaky one, because this is a Pink, "an adaptation of an ancient craft specially intended for use in fishing in the shallow waters round Schevisingen."
The reason for this card is that bubble gum is also pink, though it was originally, briefly, grey - when this looked unappetising a little red dye was added and that was diluted down to pink. However today "bubble gum pink" is a recognised colour for all kind of objects and paints. It even has a hex code for use in computer programming, which is #F58092
Our original Wills reference book part IV is rather sparse with its description of this set, simply listing it as :
312. 25. RIGS OF SHIPS. Large card, size 79 x 62 m/m. Fronts printed by letterpress in colour. Backs in grey with descriptive text. Home issue, 1929
It is reduced still further in our World Tobacco Issues Indexes, to "RIGS OF SHIPS. Lg. Nd. (25).
However it is a lovely set, including boats of different countries and different era. And there is a checklist at The Trading Card Database / ROS.
They would look lovely mounted in a frame, except for the fact that they are a mixture of landscape and portrait views.