Okay, sorry for the lateness, it's a complicated time.
Thinking in the complete elimination of steam traction (last steam hauled regular services lasted until 1977), FS studied an improvement of the previous unified project and, at mid 70s, born D 345. This is basically a D 343 with a more reliable variant of the Fiat engine and better cooling system, that now uses the space previously occupied by the luggage room.
At the same time there was the need of more powerful locomotives for the last non electrified arteries, Bari-Lecce and Bari-Taranto, that will be wired only in the 90s. The answer became D 445, the most powerful between the unified series with a prime mover output of 1560 kw. A big difference from the previous series has been the use, as main generator, of an alternator/rectifier instead of the classic dynamo. For the first time an Italian diesel loco answered to the problem of coaches heating, that until the time made compulsory the use of steam equipped coaches and heating wagons on non wired lines, having a secondary generator that can supply electric heating to a maximum of six carriages and making possible the use of air conditioning, so that the most important trains from the north to the heel and the ionic coast can be done with the more modern coaches.
Slowly D 345 (145 units) became a familiar sight at the head of rakes of old coaches or freight trains, sometimes double heading because of the modest power, everywhere in the boot.
An unidentified D 345 supported by an heating wagon, doing a local train on the Asti to Cavallermaggiore line in February 1975. Photo by B. Studer.
345102x-030275castagnole.jpg (157.68 KiB) Viewed 1488 times
Instead the first 35 D 445 were assigned to Bari, Lecce and Taranto depots to be used almost only in heavy passenger services.
First series D 445.1004 doing a shunting movement in Crotone station, on the Ionic line, in 1995. Photo by S. Paolini.
4451004-100995crotone.jpg (198.12 KiB) Viewed 1488 times
In an effort to modernize secondary lines, at the beginning of the 80s, two more series of D 445s were built (the class finally totaled 150 machines), this time equipped with remote control to be driven from purpose built MD pilot coaches, and took in charge the heaviest passenger trains on non electrified lines.
Second series D 445s born yet in Medie Distanze livery. Here D 445.1045 pushing away a rake of the omonymous coaches from Vittorio Veneto station during a Treviso to Belluno service in 1994. Photo by S. Paolini.
4451045-280494vittorioveneto.jpg (189.43 KiB) Viewed 1488 times
Some D 345s too were equipped for use with push-pull coaches but without remote control, so they needed a driver on the piloting coach ordering another one on the loco.
To unify the class at the end of the 80s also the first series of D 445 has been equipped with push-pull devices and, after a life almost exclusively spent in passenger duties, in the last ten years this class has been cascaded also to the remaining freight services on secondary lines, because of the reduction of operations, the increased use of DMUs and the dumping of other classes; some locos have also been modified as rescue units for the high speed lines.
In the last years major overhauls of the two classes ceased and, at the end of the permitted mileage or in case of big failures, the locos are written off; the remaining ones are not in good condition because of the fault of maintenance due to the wicked Trenitalia policy.
Images courtesy of Photorail, probably the best italian site for railway photography.
Ciao
Alcohol is an enemy. Man that escapes from the enemy is a coward!