Seven catalysts, fabricated by impregnating various concentrations of Ni, Mo, Co, and W on a 7-alumina support, were investigated for their activity to upgrade SRC-II Light Ends Column Feed in a trickle-bed reactor. The effect of water on the catalyst activity was also investigated. Operating conditions were: pressure, 6.9 MPa, temperature, 405 °C, H2 flow rate, 1.9 sL/min, and LHSV, 1.0 h~1; 2% water was added to the feed for the runs which applied this technique. The most active catalysts were Ni-Mo for hydrodenltrogenation (HDN) and Co-Mo for the light oil production. Ni-W and Mo-W reduced the activity when they were present In a catalyst, and the least active catalyst was Ni-Mo-W. Water enhanced activity of the catalysts Ni-Mo and Co-W but inhibited that of Co-Mo-Ni-W, Ni-W, and Co-Mo-W.