Caligula possessed that overpowering passion for water and ships which throughout the world’s history has always manifested itself in explorer or privateer, yachtsman, or whomsoever else. Suetonius[18] says that this megalomaniac had built two galleys with ten banks of oars, each having a poop that blazed with jewels and sails that were parti-coloured. These “galleys” were fitted with baths, galleries, saloons, and supplied with a great variety of growing trees and vines. In one of these ships, Caligula was wont to sail in the daytime along the coast of Campania, feasting amidst dancing and concerts of music. Now, in the northern end of the Lake of Nemi, not far from the Campanian coast, there still lie to this day, at right angles to each other, two such galleys as Suetonius describes. Recent research beneath the water has revealed much that is invaluable to us in the study of the sailing ship. From the inscriptions on several lengths of lead piping laid for the purpose of supplying the galleys with water, and which have been brought up by divers, it is proved that these belonged to Caligula, and that therefore they are of the remote period of 37-41 A.D. And this date has been further corroborated by the discovery of tiles and bronze sculptures found on board. The history of the efforts to make these galleys speak to us from the depths of their watery grave is almost as interesting as their very existence. During the fifteenth century, owing to the fact that fishermen on the lake frequently in their nets drew ashore objects of wood and bronze, divers were sent below and discovered the undoubted existence of a ship of some sort. At last ropes were made fast and endeavours were made to draw the vessel to shallow water, but these efforts were only crowned with the unfortunate result of breaking off part of the stem. However, the nails were found to be of bronze, whilst in length some were as much as a cubit. The wood was discovered to be larch, and the vessel to be sheathed with lead, covering a stiff lining of woollen-cloth padding fastened on by bronze studs. It is important to note that the ancients in 37 A.D. had the good sense to realise what Sir Philip Howard, and other naval authorities in the time of Charles II., did not discover until the year 1682, that lead sheathing round a ship, used with iron nails, was bound to set up corrosion.[19]