about midnight
This was disappointing , for it was evident that they had turned into one of the shallow mouths , and navigation might come to an end a few miles up . Captain Drake dropped anchor well away from the shore and its pestilential night mists , and made all snug against the morning . He recognized that the navigation of the river was going to be no easy matter , and he decided to go warily . The tide ran again about midnight , and on the early morning ebb the _ Golden Boar _ stood out to sea once more , and went in search of a more promising opening . They found one that Yacamo thought he knew , and , taking advantage of the afternoon tide , they ran up nearly twenty miles . The current was almost as strong as the tide , and they had to anchor against the ebb , or be swept out to sea quicker than they had come in . The next morning they went on again , and were fifty miles up the channel by nightfall .