(London.)(Ackermann & Co.) (1845.). 16pp. 18 lithographic plates. Contemporary full morocco gilt, with titling on the upper cover. Oblong: 10.8x18 cm's. Lacking the original wrappers; else a very good copy, though the binding is a little rubbed and worn.A very scarce satire on the sea-trials of four battleships undertaken in 1844.