tag:blogger.com,1999:blog-6976144462093297473.post8905318751412936399..comments2024-03-26T19:10:00.791-04:00Comments on West Coast Stat Views (on Observational Epidemiology and more): A brief diversion into MediaJosephhttp://www.blogger.com/profile/10760453165301871031noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6976144462093297473.post-8808941040082021662012-03-05T19:56:49.481-05:002012-03-05T19:56:49.481-05:00You may have a slight point, it does take more pow...You may have a slight point, it does take more power to move a heavier ship (at least to accelerate it). If I have time this weekend, I'll scrape some data and do a regression of max speed vs. length and displacement for various epochs.<br /><br />Also it is "naval" not "navel". There is a good pun in there somewhere about navel cruisers on naval cruisers, but we won't go there.deinsthttps://www.blogger.com/profile/03784570340691659244noreply@blogger.comtag:blogger.com,1999:blog-6976144462093297473.post-23080084146268853412012-03-05T15:41:27.143-05:002012-03-05T15:41:27.143-05:00My understanding is that "larger" (for c...My understanding is that "larger" (for cruisers) meant more weight on the hull (typically in armor). <br /><br />But ships might have been a bad analogy and distracting.Josephhttps://www.blogger.com/profile/10760453165301871031noreply@blogger.comtag:blogger.com,1999:blog-6976144462093297473.post-33160063165980962302012-03-05T08:58:24.541-05:002012-03-05T08:58:24.541-05:00I get your point. Your metaphor, however, is comp...I get your point. Your metaphor, however, is completely backwards. The top speed of a ship is essentially proportional to the square root of its length. This has to do with the interaction of the bow wave and the stern wave. Once you reach a speed where they interact positively you spend all of your energy making a roostertail. See http://en.wikipedia.org/wiki/Froude_number<br />and http://en.wikipedia.org/wiki/Hull_speed. This was one of the motivating factors for enormous ships. Unfortunately the cost of a ship is essentially proportional to the cube of its length.deinsthttps://www.blogger.com/profile/03784570340691659244noreply@blogger.com