"I suppose you steer by the compass, Master Chambers?" Geoffrey said. "Which is the compass? I have heard about it, always pointing to the north."
"It's down below, young sir; I will show it you presently. We steer by that at night, or when it's foggy; but on a fine day like this there is no need for it. There are marks put up on all the sands, and we steer by them. You see, the way the wind is now we can lay our course for the Whittaker. That's a cruel sand, that is, and stretches out a long way from a point lying away on the right there. Once past that we bear away to the south-west, for we are then, so to speak, fairly in the course of the river. There is many a ship has been cast away on the Whittaker. Not that it is worse than other sands. There are scores of them lying in the mouth of the river, and if it wasn't for the marks there would be no sailing in or out."
"Who put up the marks?" Lionel asked.
"They are put up by men who make a business of it. There is one boat of them sails backwards and forwards where the river begins to narrow above Sheerness, and every ship that goes up or down pays them something according to her size. Others cruise about with long poles, putting them in the sands wherever one gets washed away. They have got different marks on them. A single cross-piece, or two cross-pieces, or a circle, or a diamond; so that each sand has got its own particular mark. These are known to the masters of all ships that go up and down the river, and so they can tell exactly where they are, and what course to take. At night they anchor, for there would be no possibility of finding the way up or down in the dark. I have heard tell from mariners who have sailed abroad that there ain't a place anywhere with such dangerous sands as those we have got here at the mouth of the Thames."
In the first three or four hours' sail Geoffrey and Lionel acquired much nautical knowledge. They learned the difference between the mainmast and the mizzen, found that all the strong ropes that kept the masts erect and stiff were called stays, that the ropes that hoist sails are called halliards, and that sheets is the name given to the ropes that restrain the sails at the lower corner, and are used to haul them in more tightly when sailing close to the wind, or to ease them off when the wind is favourable. They also learned that the yards at the head of the main and mizzen sails are called gaffs, and those at the bottom, booms.
"I think that's about enough for you to remember in one day, young masters," John Lirriper said. "You bear all that in your mind, and remember that each halliard and sheet has the name of the sail to which it is attached, and you will have learnt enough to make yourself useful, and can lend a hand when the skipper calls out, 'Haul in the jib-sheet,' or 'Let go the fore-halliards.' Now sit yourselves down again and see what is doing. That beacon you can just see right ahead marks the end of the Whittaker Spit. When we get there we shall drop anchor till the tide turns. You see we are going across it now; but when we round that beacon we shall have it dead against us, and the wind would be too light to take us against it even if it were not from the quarter it is. You see there are two or three other craft brought up there."
"Where have they come from do you think, Master Lirriper?"
"Well, they may have come out from Burnham, or they may have come down from London and be going up to Burnham or to Bricklesey when the tide turns. There is a large ship anchored in the channel beyond the Whittaker. Of course she is going up when tide begins to flow. And there are the masts of two vessels right over there. They are in another channel. Between us and them there is a line of sands that you will see will show above the water when it gets a bit lower. That is the main channel, that is; and vessels coming from the south with a large draught of water generally use that, while this is the one that is handiest for ships from the north. Small vessels from the south come in by a channel a good bit beyond those ships. That is the narrowest of the three; and even light draught vessels don't use it much unless the wind is favourable, for there is not much room for them to beat up if the wind is against them."
"What is to beat up, Master Lirriper?"
"Well, you will see about that presently. I don't think we shall be able to lay our course beyond the Whittaker. To lay our course means to steer the way we want to go; and if we can't do that we shall have to beat, and that is tedious work with a light wind like this."