So, too, the blue-and-white porcelain of Hirado, though assisted by exceptional tenderness of sous-pdte color, by milk-white glaze, by great beauty of decorative design, and often by an admirable use of the modelling or graving tool, represents a ceramic achievement palpably below the soft paste kai-pien-yao of King-te-chen.
The largest ships can enter the harbour, which has a minimum depth of 30 ft.; it has two dry docks, a graving dock and a floating dry dock.
Our knowledge of the process and materials employed in niello-work is derived mainly from four writers,- Eraclius the Roman (a writer probably of the nth century), Theophilus the monk, who wrote in the 12th or 13th century,' and, in the 16th century, Benvenuto Cellini 2 and Giorgio Vasari.3 The design was cut with a sharp graving tool on the smooth surface of the metal, which was usually silver, but occasionally gold or even bronze.
There are two graving docks.
There are several dry docks, of which the Prince of Wales Graving Dock (1858), the largest, measures 370 ft.
At Ferrybank, on the Kilkenny side of the river, there is a shipbuilding yard with patent slip and graving dock.
There are five graving docks, admitting vessels of 550 ft.
The original scheme included a high-level main basin covering an area of 55 ac., with an entrance lock from the fairway, a dry or graving dock 750 ft.
The provision of a new graving dock adjoining the Alexandra was delayed in October 1905 by a subsidence of the ground during its construction.
Till 1772 the town leased the first harbour (finished in 1710) from Sir John Shaw, the superior, but acquired it in that and the following year, and a graving dock was opened in 1786.