Only 17 minutes later, "At 0940 ... the forward tug "Dongarth" was towing at full speed against the tide but making no further progress." By 10:10, 47 minutes after passing under the bridge, the tow was still in much the same position having made good only six tenths of a mile from the bridge, giving the tide another half an hour to develop further, yet it was not until then that Captain Hewitt had the stern tug slipped and sent forward to assist the head tug, when "headway became slight but noticeable." By 1020, already a full hour into the ebb, the pilots had worked the ship across the tide and into the eddy which the "Admiralty Sailing Directions" states forms near the Anglesey shore close westward of the northern pier of the Suspension Bridge, and intended holding her there in the safety of this until the strength of the tide had abated. Instead, with only to go to the bridge, Captain Hewitt ordered that the ship be put back in the channel and this was done. Almost immediately, at 1030, she was caught by an eddy of overwhelming strength which drove the ship ashore over The Platters. "This disastrous sheer occurred and was concluded in a matter of seconds." Contrasting with the 18 minutes she had taken to complete the inbound transit, the outbound ship had been 1 hour 7 minutes covering the 1200 yards from Britannia Bridge where the pilot had advised going back.