Read it through once

The air felt cold upon the river, but it was a bright day, and the sunshine was very cheering. The tide ran strong, I took care to lose none of it, and our steady stroke carried us on thoroughly well. By imperceptible degrees, as the tide ran out, we lost more and more of the nearer woods and hills, and dropped lower and lower between the muddy banks, but the tide was yet with us when we were off Gravesend. As our charge was wrapped in his cloak, I purposely passed within a boat or two’s length of the floating Custom House, and so out to catch the stream, alongside of two emigrant ships, and under the bows of a large transport with troops on the forecastle looking down at us. And soon the tide began to slacken, and the craft lying at anchor to swing, and presently they had all swung round, and the ships that were taking advantage of the new tide to get up to the Pool began to crowd upon us in a fleet, and we kept under the shore, as much out of the strength of the tide now as we could, standing carefully off from low shallows and mudbanks.