This attempted launch of a reproduction Portuguese carrack shown in the opening post of this thread took place near Lisbon in 1940, as part of the ceremonies surrounding the Portuguese World Exposition.
Most of Europe was at war, and the exposition invited exhibitors only from Portuguese colonies and Brazil. Portugal maintained neutrality throughout the second World War, of course, though the country - and Lisbon in particular - was a hotbed of international political intrigue. Brazil entered the war on the Allied side in 1942, and sent land and air forces to fight in the Italian campaign, and had several ships sunk by U-Boats in the Atlantic.
I must confess that I knew nothing about the 1940 Expo until I did some Googling after reading the opening post.