  We give the full answer to the question: on which curves the category of
coherent sheaves $\Coh_{X}$ is tame. The answer is: these are just the curves
from the list of Drozd-Greuel. Moreover, in this case the derived category
$D^{-}(\Coh_{X})$ is also tame. We give an explicit description of the objects
of this category as well as of the categories $D^{b}(\Coh_{X})$, $\Coh_{X}$.
Among the coherent sheaves we describe the vector bundles, torsion-free
sheaves, mixed sheaves and skyscraper sheaves.
