Nautilus

The Nautilus is a submarine from 20.000 Leagues under the Sea and The Mysterious Island.

Description & Dimensions
  Here, M. Aronnax, are the several dimensions of this boat you are in. It is an elongated cylinder with conical ends. It is very like a cigar in shape, a shape adopted in London for several constructions of the same sort. The length of this cylinder from stem to stern, is exactly 232 feet, and its maximum breadth is twenty-six feet. It is not quite built like your long voyage steamers, but its lines are sufficiently long, and its curves prolonged enough, to allow the water to slide of easily, and oppose no obstacle to its passage. These two dimensions enable you to obtain, by a simple calculation the surface and cubic contents of the Nautilus. Its area measures 6032 feet; and its contents about 1500 cubic yards; that is to say, when completely immersed it displaces 50,000 feet of the water, or weighs 1500 tons.''

''When I made plans for this submarine vessel, I meant that nine-tenths should be submerged: consequently, it ought to only displace nine-tenths of its bulk, that is to say, only to weigh that number of tons. I ought not, therefore, to have exceeded that weight, constructing it on the afore said dimensions.''

''The Nautilus is composed of two hulls, on inside, the other outside, joined by T-shaped irons, which render it very strong. Indeed; owing to this cellular arrangement resists like a block, as if it were solid. Its sides cannot yield; it coheres spontaneously, and not by the closeness of the rivets; and the homogeneity of its construction, due to the perfect union of its materials, enables it to defy the roughest seas.''

''These two hulls are composed of steel plates, whose density is from •7 that •8 of the water. The first is not two inches and a half thick, and weighs 394 tons. The second envelope, the keel, twenty inches high and ten thick, weighs alone sixty-two tons. The engine, the ballast, the several accessories and apparatus appendages, the partitions and bulkheads, weigh 961 •62 tons. Do you follow all this?  Captain Nemo, Twenty Thousand Leagues Under the Sea; Chapter XII, Some Figures