Looks like a B 17? In 1961 French fishermen went hunting lobsters off the coast of Brazil where lobsters thrived, and caused an international kerfuffle and research as to whether lobsters swim, or remain on the ocean floor

French fishermen decided to try their luck on the other side of the Atlantic ocean. After trying out a few locations, they found an excellent spot off the coast of Brazil where lobsters thrived at depths of 250–650 ft.

The sudden increase of French vessels in the area annoyed the local Brazilian fishermen. They reported that French fishing boats were illegally catching lobsters and soon the Brazilian vessels demanded that the fleet of French fishing boats return to deeper waters, unfortunately, the French believed that they had every right to trap lobsters in those waters. They immediately sent a message to the French government, and Charles de Gaulle was furious about the whole situation. He decided to dispatch their 2750-ton T 53 class destroyer Tartu to keep the fishing boats safe.

The Brazilians denied access to French fishermen within 100 miles of the Brazilian northeast coast. Their main argument was that lobsters “crawl along the continental shelf” and therefore they belong to Brazil. The French, on the other side, claimed that “lobsters swim” and therefore they belong to everybody that catches them in the ocean.

The “scientific” argument continued until 1966. Both French and Brazilian scientists had their theories about the actual movement of crustaceans. The Administrative Tribunal of Rennes recognized the French theory that lobsters are like fish and they swim in the open ocean. Because of this reason they can not be considered as the property of any country. 

Brazil, on the other hand, claimed that lobsters are like oysters and remain down on the ocean floor, as a part of the continental shelf.

Brazil’s expert in the field of oceanography during the 1960s said that accepting the French thesis that lobsters are like fish and “leap” on the ocean floor is like Brazilians claiming that when kangaroos “hop” they should be considered as birds.

https://face2faceafrica.com/article/lobster-war-when-brazil-and-france-fought-in-the-1960s-over-who-had-the-right-to-hunt-lobsters

https://www.thevintagenews.com/2017/01/14/the-lobster-war-when-brazil-and-france-argued-whether-lobsters-crawl-or-swim/