Аннотация:Type II-plateau supernovae (SNe II-P) have so far been observed only at
z {\lt} 1. We propose a distant SN II-P survey at z {\gt} 1 with shock
breakout, that is the brightest radiative phenomenon in a supernova
(SN). The first observation of shock breakout from the rising phase is
reported in 2008. We construct a theoretical model reproducing the
UV-optical light curves (LCs) of the first example and demonstrate that
the peak apparent g-band magnitude of the shock breakout would be mg \~{}
26.5 mag if an identical SN occurs at a redshift z = 1, which can be
reached by 8m-class telescopes. Furthermore, we present LCs of shock
breakout of SN explosions with various main-sequence masses and derive
the observable SN rate and reachable redshift as functions of limiting
magnitude. The g-band observable SN rate with limiting magnitude 27.5
mag is 3.3 SNe deg-2 day-1 and half of them are located at z {\gt} 1.2.
It is clear that the shock breakout is a beneficial clue to probe high-z
core-collapse SNe.