There are a number of reports of ship captains and coast guard officers from different countries, which describe cases of falling or entering under water of some unknown objects
Such cases were observed in the 19th and 20th centuries. in almost all oceans and seas, and sometimes several objects sank into the water at once. It is characteristic that for the first time such observations were described back in 1919 by Charles Fort in his "Book of the Damned". Three such examples are given below. In 1884, a round object flew over the English ship "Innerwish" and entered the water next to it with a loud sound, and the resulting wave nearly overturned the ship.
In 1887, two round flying objects appeared over the Dutch ship Ginny Ay. One of them was luminous, the other was dark. Then one of them sank into the water with a crash and a splash.
In 1906, 600 miles from Cape Reis (North Atlantic), the crew of the St. Andrew steamer observed how, at a distance of about 5 miles, three unknown objects entered the water one after the other. Soon, another object in the form of a plate with a diameter of 3-5 m flew along a zigzag path and also sank into the water one mile from the steamer.
After the Second World War, cases of falling or leaving into the water of unknown objects were recorded in 1950 near Incheon (South Korea), in 1955 in the Gulf of Mexico, in 1956 off the coast of California and in 1968 off the coast of Venezuela.