French corvette Alecton off "lest the creature damage or injure the ship and the crew", but in an interview Roper laments "How dangerous is a giant squid full of cannon balls going to be?" The "Alecton" encounter was the inspiration for the giant squids attacking the submarine in "Twenty Thousand Leagues Under the Sea", a classic science fiction novel by French writer Jules Verne, published in 1870. Notes References French corvette Alecton The French corvette Alecton was a ship in the French Navy in the 19th century. She is most famous for being one of the first surface vessels recorded to have encountered
Twenty Thousand Leagues Under the Sea of underwater breathing apparatus designed by Benoit Rouquayrol and Auguste Denayrouze in 1865. They designed a diving set with a backpack spherical air tank that supplied air through the first known demand regulator. The diver still walked on the seabed and did not swim. This set was called an "aérophore" (Greek for "air-carrier"). Air pressure tanks made with the technology of the time could only hold 30 atmospheres, and the diver had to be surface supplied; the tank was for bailout. The durations of 6 to 8 hours on a tankful without external supply recorded for the Rouquayrol set in