In this general scouring of the coastal waters of the kingdom certain points were of necessity subjected to a much closer surveillance than others. Particularly was this true of the sea routes followed by the East and West India, and the Baltic, Virginia, Newfoundland, Dutch and Greenland trades, where these converged upon such centres of world-commerce as London, Poole, Bristol, Liverpool and the great northern entrepôts on the Forth and Clyde, the Humber and the Tyne. A tender stationed off Poole, when a Newfoundland fish-convoy was expected in, never failed to reap a rich harvest. At Highlake, near the mouth of the Mersey, many a fine haul was made from the sugar and rum-laden Jamaica ships, the privateers and slavers from which Liverpool drew her wealth. Early in the century sloops of war had orders "to cruise between Beechy and the Downs to Impress men out of homeward-bound Merchant Ships," and in 1755 Rodney's lieutenants found the Channel "full of tenders." Except in times of profound peace--few and brief in the century under review--it was rarely or never in any other state. An ocean highway so congested with the winged vehicles of commerce could not escape the constant vigilance of those whose business it was to waylay the inward-bound sailor. A favourite station in the Channel was "at ye west end of ye Isle of Wight, near Hurst Castle," where the watchful tender, having under her eye all ships coming from the westward, as well as all passing through the Needles, could press at pleasure by the simple expedient of sending gangs aboard of them. At certain times of the year such ports as Grimsby, Great Yarmouth, Lowestoft and Brixham came in for similar attention. When the fleets were due back from the "Great Fishery" on the Dogger Banks, tenders cruising off those ports netted more men than they could find room for; and so heavy was the tribute paid in this way by the fishermen of the last-named port in 1805, that "not a single man was to be found in Brixham liable to the impress." Every unprotected man, out of a total of ninety-six fishing-smacks then belonging to the place, had been snapped up by the tenders and ships of war cruising off the bay or further up-Channel. [Footnote: _Admiralty Records_ 1. 581--Admiral Berkeley, Report on Rendezvous, 15 Sept.] The double cordon composed of ships and tenders on the cruise by no means exhausted the resources called into play for the intercepting of the sailor afloat. Still nearer the land was a third or innermost line composed of boat-gangs operating, like so many of the tenders, from rendezvous on shore, or from ships of war lying in dock or riding at anchor. Less continuous than the outer cordon, it was not less effective, and many a sailor who by strategy or good luck had all but won through, struck his flag to the gang when perhaps only the cast of a line separated him from shore and liberty.