Thanks to the fact that nowadays more and more books are digitized we are able to read books that are some times for decades no longer available for the public for several reasons. That’s quite a pity while these books contains useful information while the archives are destroyed, incomplete or nor accessible.
P. 242: “The data on which to estimate the Venetian, or the Austrian, naval force in the Adriatic in '48-49, are by no means abundant, or reliable. On the 22nd of March, '48, the Austrian Navy consisted of 45 vessels, large and small, mounting 284 guns of all calibres - lying at Pola, Trieste, Naples, and in different ports of the Levant . In the port and Arsenal of Venice were upwards of 160 armed vessels - mounting about 200 guns - two only being corvettes, and the residue gun-boats , bomb-boats, barges, &c, for defence of the Lagune, all of which- of course, fell Into the hands of the Venetians, together with a frigate, two corvettes, and a dozen smaller vessels, mounting about 100 guns, in course of construction and repair. The Austrian blockading squadron consisted of 8 frigates of 44 guns each; 2 corvettes of 14 and 20 guns; 5 brigantines, carrying from 1 to 4 guns each; 2 golettas of 10 guns each; 1 steamer of 120 horse-power - the Vulcano - carrying two 48-pounders and four 12 pounders; 3 of the Austrian Lloyd Packet steamers, armed with a few guns each, and several armed trabaccoli, or small fishing schooners - numbering in all 19 vessels, mounting about 260 guns, and constituting, moreover, the entire naval force of Austria, at the time, if we add a frigate, a corvette, a brigantine, and 2 steamers - 5 vessels in all, mounting about 100 guns.”
Source
Edmund Flagg. Venice, the city of the sea, from the invasion by Napoleon in 1797 to the capitulation to Radeztky in 1849, with a contemporaneous view of the peninsula. New York, 1853.