It is based on a diving bell design. Momsen returned to his diving bell idea in 1930. He then kills Burke by trapping him in a diving bell. Among his patents was one for a diving bell in 1921. Video may also be used to monitor the occupants of a closed diving bell. Shortly after he reported aboard, he came across his diving bell drawings. Modern deep-diving submarines derive from the bathyscaphe, which in turn evolved from the diving bell. In addition to the diving bell and hyperbaric chamber, related diving equipment includes the following. This design replaced earlier concepts that depicted the Gungan vessel as an organic-looking diving bell. Maturin is delighted to receive his diving bell, built on Edmond Halley's design. A very few Arachnids have adopted an aquatic life style including the Diving bell spider. In 1535, Francesco De Marchi dived on the wreck using a diving bell. In 1616, Franz Kessler built an improved diving bell. In "Krakatoa, East of Java", in 1969 he played the designer of a diving bell.