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"Roger Long" wrote: Uh oh. Don't get me started on Metacenters. As the name implies they aren't real and nothing makes stability harder to understand from what is generally written. I've given many lectures on stability and I usually have to spend the first third of the lecture getting the students to forget all the stuff they read the night before. Metacenters and metacentric height are very useful calculation shortcuts for naval architects but a very poor way to understand the forces involved. Even buoyancy is imaginary. Anybody want to try and guess what really holds a boat up? Air pressure? -- Molesworth |
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