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Previous Thread Next Thread Print Thread keal #138461 02/01/05 03:02 AM Joined: Apr 2000 Posts: 3,065 Jakarta B Bingley OP Carpal Tunnel OP Bingley Carpal Tunnel B Joined: Apr 2000 Posts: 3,065 Jakarta I've recently come across this as keal/kg. When I googled past Keal as a proper name, I also found keal/hr. Any suggestions as to what it might mean. My current theory is that it's a typo for kcal, but I thought I'd better check with the more scientifically aware. Bingley Bingley Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138462 02/01/05 06:24 AM Joined: Mar 2000 Posts: 1,027 Switzerland wsieber old hand wsieber old hand Joined: Mar 2000 Posts: 1,027 Switzerland a typo for kcal - looks highly likely. No other unit of any resemblance to this is known to me. Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138463 02/01/05 07:31 AM Joined: Oct 2001 Posts: 1,385 P plutarch veteran plutarch veteran P Joined: Oct 2001 Posts: 1,385 I've recently come across this as keal/kg. It looks like typo for "keel", Bingley. Keel weight is an important consideration in the design of a keel. This is over my head, but it may mean something to you: [BTW this search also turned up "squat and trim" which is interesting.] "The distance of the the center of gravity above the keel (KG) only minimally influences the behavior of the ship (Graph 3): Only a minimal dependence of the squat on the KG (DKG up to approx. 3 m) could be measured in the investigation with the PPM 350. An increase in the distance of the center of gravity above the keel causes a "softer" ship behavior in waves. There is no definite influence of the size of the KG on the trim angle in calm water. Graph 3: Influence of the distance of the center of gravity above the keel (KG) on the squat and trim of very large PPM container ships (here with a length of 350 m) (60 KB) A prognosis for the squat and trim behavior of large PPM container ships is not possible on the basis of "classic" analytical and empirical approaches, as has been shown in a comparison of calculations and measurements in a hydraulic model (e.g., squat in Graph 4): http://www.baw.de/vip/en/departments/department_k/projects/squat/squat_laenge-en.html I've enjoyed this little nautical excursion, Bingley, thanks. I might just do a post on some nautical terms in ship design including "squat and trim" and "coamings" [which turned up also]. Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138464 02/01/05 09:10 AM Joined: Jun 2001 Posts: 273 NZ V Vernon Compton enthusiast Vernon Compton enthusiast V Joined: Jun 2001 Posts: 273 NZ A typo for kcal sounds more likely than a typo for keel, since keel involves hitting the same letter twice, whereas kcal requires hitting a different key. Here's a site that does use "keel/kg" as a unit of measurement, but not in any remotely nautical context. http://www.npwrc.usgs.gov/resource/literatr/firewild/bib/184.htm Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138465 02/01/05 09:21 AM Joined: Jun 2001 Posts: 273 NZ V Vernon Compton enthusiast Vernon Compton enthusiast V Joined: Jun 2001 Posts: 273 NZ Here's a quote from one hit on "keal/kg" that appears to conclusively vindicate your assumption, Bingley.: and must be expressed as "kilocalories per kilogram" ("keal/kg) of product ... Here's the source link: http://www.state.ma.us/dfa/legal/regs/farmprod_1300~1_petfood.pdf Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138466 02/01/05 12:08 PM Joined: Mar 2002 Posts: 1,692 UK D dxb Pooh-Bah dxb Pooh-Bah D Joined: Mar 2002 Posts: 1,692 UK I suppose kilocalories per kg is probably correct, but the nautical stuff is more interesting. Googling pulled up an article discussing squat in relation to the Queen Mary 2 and it brought home how careful the calculations need to be for any large vessel. It is quite possible to end up with a design such that squat could limit the ports of call open to the vessel which would have a direct effect on the commercial viability of the proposed vessel. Simply put, 'squat' is the amount by which the keel is forced down into the water when the vessel is underway and it varies with speed and channel width. Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138467 02/01/05 12:50 PM Joined: Oct 2001 Posts: 1,385 P plutarch veteran plutarch veteran P Joined: Oct 2001 Posts: 1,385 'squat' is the amount by which the keel is forced down into the water when the vessel is underway and it varies with speed and channel width. I didn't know diddley-squat about "squat" before, dxb. Thanks. Sorry if I threw you off keel on "keal", Bingley. Copy Link to Clipboard Share Post on Facebook Share Post on Twitter Re: keal #138468 02/02/05 04:44 AM Joined: Apr 2000 Posts: 3,065 Jakarta B Bingley OP Carpal Tunnel OP Bingley Carpal Tunnel B Joined: Apr 2000 Posts: 3,065 Jakarta I suppose I should have mentioned that the context was quality control for coal supplies .... But then we would never have known about Queen Mary's squat. 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