This Italian salvage tug, a former luxury steam yacht, had in interesting life as yacht and tug - and service in both US and Italian navies:
[en.wikipedia.org])
[www.naviearmatori.net]

Some sources, apparently from Gröner, claim SALVATORE PRIMO was again raised and re-entered service. No evidence for this has yet been found in Italian sources and it seems likely that she was sunk in deep water in 1943.

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1943: raised and repaired by the German Kriegsmarine (DEU)
1944 -xx/06: transferred to 22e UJ-flotille 'Seeschlange'
1947: in service until 1947