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"HEMI-Powered" schreef in bericht ... Leeboards I learned from boatbuilder Dave Fleming. I'm not sure about the bow configuration's purpose. Apparently it worked quite well ass it has been in use for many centuries.. Maybe Bouler knows some more, it's his favorite ship if I'm right... Regards, You're right there, my father, grandfather and grandgrandfather sailed these ships before I was born. I cannot answer the question about the bowconfiguration but I think because they were cargo ships there was more space in the ship than with a small bow. Dont forget, these ships were aground by low tide in the "Zuiderzee" and the "Waddenzee" waiting for high tide to go on. BTW, thanks for this beauty Jeroen. Interesting stuff I don't recall hearing about before, Bouler. Thanks for sharing it with the group. I am hardly a nautical engineer but for maximum cargo capacity at a given length and a given amount of material, it is necessary to displace the most water possible using the shape of the hull. Thus, a wide ship with a blunt bow shape tends to be the best since it displaces a good deal of water and at the same time draws the least depth making it ideal for inland waterways. Thats exactly the reason, a lot of lakes have shallow water in The Netherlands OTOH, this configuration is very wasteful of power and cannot get very much speed over the water before friction caused by a gigantic bow wave overwhelms the power of the engines. Thus, in the case of true "tall ships" such as the fast clippers of the 19th century, speed was more valued than cargo tonnage and draft. Today, however, the pendulum has swung back to cargo capacity especially for container ships and tankers as power plants have advanced tremendously in the last 20 or so years while costs have skyrocketed. Clippers were sailing in deep water. In the early year the ships were nice and had class. Nowadays they think what the cargo is and and build something around it that floats and call it a ship;-( Now, undoubtedly I've made a number of errors in the above but as I said, my background is much more mechanical engineering from an education point-of-view and specifically car body engineering from a practical point-of-view so corrections to my factual errors would be much appreciated. It was not that bad Jerry;-) -- Greetings Bouler (The Netherlands) |
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