human
I think that's about enough for you to remember in one day, young masters, John Lirriper said.
gpt
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.
human
Where have they come from do you think, Master Lirriper?
gpt
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.
human
What is to beat up, Master Lirriper?
gpt
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.