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Title: The Supercritical Accretion Disk in SS433 and Ultraluminous X-ray Sources Abstract: SS433 is the only known persistent supercritical accretor, it may be very important for understanding ultraluminous X-ray sources (ULXs) located in external galaxies. We describe main properties of the SS433 supercritical accretion disk and jets. Basing on observational data of SS433 and published 2D-simulations of supercritical accretion disks we estimate parameters of the funnel in the disk/wind of SS433 and discuss formation of the jets. We argue that the UV radiation of the SS433 disk (~50000 K, ~10E40 erg/s) is roughly isotropical, but X-ray radiation (~10E7 K, ~10E40 erg/s) of the funnel is middle anisotropical. A face-on SS433 star has to be ultraluminous in X-rays (10E(40-41) erg/s). Expected typical time-scales of the funnel flux variability are 10-100 sec. Shallow, very broad (0.1-0.3c) and blue-shifted absorption lines (O, Fe, Ni) are expected in the funnel X-ray spectrum. (Your abstract must use Normal style and must fit in this space) Generic template 1.1 16/7/2003