Hard to believe it's Saturday today AND our penultimate day on the water before the Dinghy Instructor Assessment :O :O
We were still practising our seamanship skills today, very repetitive, but good practise. Lots of stuff to get in our heads for Tuesday. Monday we don't have off. In the morning we'll be doing presentation stuff and in the afternoon possibly navigating our way to a pub up the river.
I went back for seconds today, and learnt a very important lesson I should have already known. So I ate at twenty to six as soon as we'd finished for the day and was left feeling like I'd like some more, which only happens occasionally. So I asked the kitchen staff when they served seconds and was told quarter to seven. So I went back to my room and read a book whilst I waited for the allotted time. Then I returned down and there they were: waiting for me. There were maybe five other people in the canteen at that moment so it was pretty quiet. Now I had only wanted a single piece more of the pudding... but one of the guys on the kitchen staff got hold of a plate and started asking me what I wanted and, being sometimes too polite, I thought "ah well, I'll manage it" and so got another plate heaped up for me. Then it came to getting puddings and I helped myself - quite willingly, if unthinkingly - to two pieces of the jam and coconut sponge and poured lots of custard on it. So there I was, sitting at the table with a whole new dinner in front of me... I just had to go at it, so I did. I would love to say I came out of that place fully filled and fresh as a breeze. Actually I came out holding my stomach, bent over and walking very gingerly. That's what I get for being greedy.
On the other hand I was astonished at how much food they had left over. It was RIDICULOUS!! Unfortunately, unlike normal, there was too much for me to finish it off for everyone. I wonder how much has gone in the bin... apparently some of it gets frozen and given to the yachters who go on long-distance voyages.
A good day, overall. I think we're spending most of tomorrow on rudderless sailing, apparently it's almost impossible to stop yourself from tacking constantly when you first begin to learn... we'll see. (For anyone interested as to why this is then I'll try and explain
Three things steer a dinghy: balance, sails and rudder. Without a rudder you are then left with using the balance of your boat (port or starboard, but what matters is whether the side is windward - nearest the wind - or leeward - side furthest away from the wind) and also the sails on your boat. In the water your boat will pivot around the daggerboard, which, as a side note, converts two forces pressing on it from either side into a forwards force. It is the centre of lateral resistance. The centre of effort, where the most force is on the boat, is somewhere above the centre of lateral resistance. Boats are designed so that the centre of effort is immediately above the centre of lateral resistance. This keeps the boat going straight. If the centre of effort moves forward of the centre of lateral resistance then the boat will bear away (go more downwind) and if it moves backwards then the boat will head up (go more towards the wind). When you have two sails the boat is designed so that the centre of effort is above the centre of lateral resistance when BOTH sails are perfectly trimmed (set in the right position to get the most amount of power from the boats direction to the wind) So if the main sail (more towards the back) is put on and the jib (at the front) is let off then the boat will naturally turn upwind because there is more force on the back of the boat, moving the centre of effort backwards. Get it? I would draw diagrams. Then if the mainsail is let off and the jib is pulled on then the centre of effort moves forward and the boat bears away. However, as the main sail is larger than the jib I believe that even when it is let off it slightly it can still move the centre of effort backwards, meaning that you are constantly being turned upwind. Once you've gone past where you are heading straight into the wind (a tack) then you progressively go downwind though, so once there is wind in your sails again (there is an area pointing into the wind where there is no power at all, called the No Go Zone) the larger main sail will force you back the way you'd just come, because upwind is now in the opposite direction. And that makes you tack again, thus you are always tacking.
Balance is quite simple to grasp, if you lean the boat leeward it will naturally (I'm pretty sure because of the shape of the hull, but there is possibly another reason I can't remember) want to head up. If you lean it onto you more (windward) then it will want to bear away.
There a little splurge of stuff I now know, even if it's hard to explain simply by description. (Think about if you had a bottle lying on its side on the ground and your hand is the wind The lid is the front of the bottle. If you push your hand against the front of the bottle it pushes the front away from the direction your hand is coming from. If you push your hand against the back of the bottle the front will turn more into the direction where your hand came from. So if you make it so more wind is on the jib at the front of the boat or on the mainsail more to the back then the same effect will take place)