Direct current measurements with five moorings at 27-35 degrees N, 165 degrees E from 1991 to 1993 and with one mooring at 27 degrees N, 167 degrees E from 1989 to 1991 revealed temporal variations of deep flow at mid-latitude in the western North Pacific. The deep-circulation flow carrying the Lower Circumpolar Deep Water from the Southern Ocean passed 33 degrees N, 165 degrees E northwestward with a high mean velocity of 7.8cms(-1) near the bottom and was stable enough to continue for 4-6 months between interruptions of 1- or 2-months duration. The deep-circulation flow expanded or shifted intermittently to the mooring at 31 degrees N, 165 degrees E but did not reach 35 degrees N, 165 degrees E although it shifted northward. The deep-circulation flow was not detected at the other four moorings, whereas meso-scale eddy variations were prominent at all the moorings, particularly at 35 degrees N and 29 degrees N, 165 degrees E. The characteristics of current velocity and dissolved oxygen distributions led us to Conclude that the deep-circulation flow takes a cyclonic pathway after passing through Wake Island Passage, passing 24 degrees N. 169.5-173 degrees E and 30 degrees N, 168-169 degrees E northward, proceeds northwestward around 33 degrees N, 165 degrees E, and goes westward through the south of the Shatsky Rise. We did not find that the deep-circulation flow proceeded westward along the northern side of the Mid-Pacific Seamounts and eastward between the Hess Rise and the Hawaiian Ridge toward the Northeast Pacific Basin. (c) 2007 Elsevier Ltd. All rights reserved.