Updated 22 May 2010
Well not quite. But thanks to the excellent Miramar Ship Index, I have been able to ID a few key merchant vessels supplying North Africa which were built to what appears to be a standardised design. If I am wrong about that, corrections are welcome!
From 1939, the Riunito Adriatico shipyard at Monfalcone produced a number of standardised, fast merchant vessels of about 6,330/6,830 tons for foreign and Italian clients, which were taken over by the Sidarma shipping company in Fiume. Many of these vessels were involved, and quite a few of them lost, on the trip to North Africa. Many of them were named after historic figures, such as former Doges of Venice (Sebastiano Venier), or more recent Italian heroes, such as Fabio Filzi. The vessels played a significant role in supplying the Axis forces in North Africa, and 8 out of 10 were lost plying the North Africa route, with some of them surviving only a few months.
The vessels I could identify thus far out of this series are the following:
Pietro Orseleo (completed 1939, outside the Med in June 1940, sunk off Lorient 1943 – named after the Doge of Venice 991 – 1009)
Vettor Pisani (completed 1939, survived the war, broken up 1971 – named after a 14th-century Venetian admiral)
Andrea Gritti (completed 1939, sunk by a/c bomb (this source says a/c torpedo) with considerable loss of life while transporting troops, 3 September 41, off Sicily – named after the Doge of Venice 1523 – 1538)
Marco Foscarini (completed 1940, hit by a/c bomb and beached off Tripoli, 27 May 41 – named either after the Doge of Venice 1762 – 1763 or the commander of a Venetian galley at the Battle of Lepanto, or both)
Sebastiano Venier (completed 1940, hit by s/m torpedo 9 December 1941, wrecked off Cape Methino, Greece – named after the Doge of Venice 1577 – 1578) [actually, this was a captured Dutch vessel, originally called Jason]
Francesco Barbaro (completed 1940, sunk by s/m torpedo off Navarino, 27 September 41 – named after a 15th century Venetian humanist)
Fabio Filzi (first of the ships with a 500t increase in displacement, completed 1940, sunk by s/m torpedo off Taranto, 13 December 41 – named after an Italian 1st World War hero executed as a traitor by the Austrians)
Carlo del Greco (completed 1941, sunk by s/m torpedo off Taranto, 13 December 41 – named after an Italian 1st World War hero who died when his submarine engaged Austrian submarine U-5 under command of (the) Ritter von Trapp in 1915)
Gino Allegri (completed 1941, sunk by s/m torpedo off Benghazi, 31 May 42 – – named after an Italian 1st World War pilot)
Reginaldo Giulani* (completed 1942, hit by a/c torpedo off Benghazi, 4 June 42, and scuttled 5 June 42 – name provenance unknown to me)
Mario Roselli (completed 1942, survived the war, broken up 1972 – name provenance unknown to me)
*confusingly, an Italian submarine completed in 1940 carried the same name.