  We present the first edition of the {S}DSS {H}II-galaxies with {O}xygen
abundances {C}atalog (SHOC), which is a listing of strong emission-line
galaxies (ELGs) from the Sloan Digital Sky Survey (SDSS). Oxygen abundances
have been obtained with the classic Te-method. We describe the method
exploiting the SDSS database to construct this sample. The selection procedures
are described and discussed in detail, as well as some problems encountered in
the process of deriving reliable emission line parameters. The method was
applied to the SDSS Data Release 1 (DR1). We present 612 SDSS emission-line
galaxies (624 separate SDSS targets in total), for which the oxygen abundances
12+log(O/H) have r.m.s. uncertainties <0.20 dex. The subsample of 263 ELGs have
an uncertainty <0.10 dex, while 459 ELGs have an uncertainty <0.15 dex. The
catalog includes the main parameters of all selected ELGs, the intensities and
equivalent widths of hydrogen and oxygen emission lines, as well as oxygen
abundances with their uncertainties. The information on the presence of
Wolf-Rayet blue and/or red bumps in 109 galaxies is also included. With the use
of combined g,r,i SDSS images we performed visual morphological classification
of all SHOC galaxies. 461 galaxies (~75%) are classified as confident or
probable blue compact galaxies (BCG/BCG?), 78 as irregular ones, 20 as low
surface brightness galaxies (LSBG), 10 as obviously interacting and 43 as
spiral galaxies. In creating the catalog, 30 narrow line AGN and 69 LINERs were
also identified; these are also presented apart of the main catalog. We outline
briefly the content of the catalog, and the prospects of its use for
statistical studies of the star formation and chemical evolution issues. Some
of these studies will be presented in the forthcoming paper (abridged).
