THE LOG-BOOK STORY
nce upon a time there was a wide river that ran into the ocean, and beside it was a little city. And in that city was a wharf where great ships came from far countries. And a narrow road led down a very steep hill to that wharf, and anybody that wanted to go to the wharf had to go down the steep hill on the narrow road, for there wasn't any other way. And because ships had come there for a great many years and all the sailors and all the captains and all the men who had business with the ships had to go on that narrow road, the flagstones that made the sidewalk were much worn. That was a great many years ago.
The wharf was Captain Jonathan's and Captain Jacob's and they owned the ships that sailed from it; and, after their ships had been sailing from that wharf in the little city for a good many years, they changed their office to Boston. After that, their ships sailed from a wharf in Boston.
Once, in the long ago, the brig Industry had sailed from Boston for a far country, and little Jacob and little Sol had gone on that voyage. Little Jacob and little Sol were very much interested in the things that they saw every day and in the things that were done every day on the ship by the sailors and by the mates and by Captain Solomon. But those things that happened the same sort of way, every day, interested little Jacob more than they did little Sol. Little Sol liked to see them a few times, until he knew just what to expect, and then he liked to be out on the bowsprit, seeing the things that he didn't expect; or he liked to be doing things. And the things that he did were the sort of things that nobody else expected. So the things that little Sol did were an amusement to the sailors and to the mates; and sometimes they were an amusement to Captain Solomon and sometimes they weren't. When they didn't amuse Captain Solomon they didn't usually amuse little Sol, either.
Every captain of a ship keeps a sort of diary, or journal, of the voyage that ship is making. This diary is usually called the ship's log. And every day he writes in it what happened that day; the courses the ship sailed and the number of miles she sailed on each course; the sails that were set and the direction and strength of the wind; and the state of the weather and the exact part of the ocean she was in and the time that she was there.
The exact part of the ocean that the ship is in is usually found by looking at the sun, just at noon, through a little three-cornered thing, called a sextant, that is small enough for the captain or the mate to hold in his hands; and by seeing what time it is, by a sort of clock, when the sun is the very highest. Then the captain goes down into the cabin and does some arithmetic out of a book, using the things that his sextant had told him, and he finds just exactly where the ship was at noon of that day. Then he pricks the position of the ship on a chart, which is a map of the ocean, so that he can see how well she is going on her course.
Sometimes it is cloudy at noon, so that he can't look at the sun then, but it clears up after dark. Then the captain looks through his sextant at the moon, or at some bright star, and finds his position that way. And sometimes it is cloudy for several days together, so that he can't take an observation with his sextant in all that time. Captains don't like it very well when it is cloudy for several days together, for then they have nothing to tell them just where the ship is, but what is called "dead reckoning."