<p>A catalytic hydrocracking process wherein a liquid phase stream comprising a hydrocarbonaceous feedstock (1), a liquid phase effluent from a hydrocracking zone (16), and hydrogen in a sufficiently low hydrogen concentration to maintain a liquid phase continuous system is fed into a hydrotreating zone (4) to produce a first hydrocarbonaceous stream comprising hydrocarbons having a reduced level of sulfur and nitrogen. The resulting hydrocarbons having a reduced level of sulfur and nitrogen are introduced into a hydrocracking zone (13) with a sufficiently low hydrogen concentration to maintain a liquid phase continuous system to produce a hydrocracking zone effluent (16) which provides lower boiling range hydrocarbons.</p>
