en>Walter Görlitz: Added {{unreferenced}} tag to article (TW)

2013-09-26T18:20:46Z

Added {{unreferenced}} tag to article (TW)

← Older revision		Revision as of 20:20, 26 September 2013
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	~~Nice~~ to ~~satisfy you, my title~~ is ~~Numbers Held though I don~~'~~t really like being known~~ as ~~like that~~. ~~Doing ceramics~~ is ~~what my family and I appreciate~~. ~~Hiring is her working day occupation now and she will not change it anytime quickly~~. ~~Puerto Rico is exactly where he~~'s ~~been living for~~ many ~~years and he will by no means transfer.~~<br><br>~~My page~~ :: [~~http~~://~~Dore~~.~~gia~~.~~ncnu~~.~~edu~~.~~tw/88ipart/node/1326254 Dore~~.~~gia~~.~~ncnu~~.~~edu~~.tw]		[[File:Ship length measurements.svg\|thumb\|right\|300px\|Graphical representation of the dimensions used to describe a ship. Dimension "''b''" is the '''beam'''.]]
			The '''beam''' of a ship is its width at the widest point as measured at the ship's nominal [[waterline]].

			Beam may also be used to define the maximum width of a ship's hull, or maximum width plus superstructure overhangs.

			Generally speaking, the wider the beam of a ship (or boat), the more [[initial stability]] it has, at expense of [[reserve stability]] in the event of a [[capsizing\|capsize]], where more energy is required to right the vessel from its inverted position.

			== Typical values ==
			Typical length-to-beam ratios for small sailboats are from 2:1 (dinghies to trailerable sailboats around {{convert\|20\|ft\|0\|disp=or\|abbr=on}}) to 5:1 (racing sailboats over {{convert\|30\|ft\|-1\|disp=or\|abbr=on}}).

			Large ships have widely varying beam ratios, some as large as 20:1.

			[[Racing shell\|Rowing shells]] designed for flatwater racing may have length to beam ratios as high as 30:1,<ref>[http://www.sciencenews.org/pages/sn_arc99/7_17_99/mathland.htm Science News Online: Ivars Peterson's MathTrek (7/17/99): Row Your Boat<!-- Bot generated title -->]</ref> while a [[coracle]] has a ratio of almost 1:1 - it is nearly circular.

			==Formula==
			The beam of many monohull vessels can be calculated using the following formula:
			:<math>Beam = LOA^{2/3} + 1</math>
			Where LOA is Length Overall and all units are in feet.

			Some examples:
			* For a standard {{convert\|27\|ft\|m\|1\|abbr=on}} yacht: the cube root of 27 is 3, 3 squared is 9 plus 1 = 10. The beam of many 27 ft monohulls is {{convert\|10\|ft\|m\|2\|abbr=on}}.
			* For a [[Volvo Open 70]] yacht: 70.5 to the power of 2/3 = 17 plus 1 = 18. The beam is often around {{convert\|18\|ft\|m\|1\|abbr=on}}.
			* For a {{convert\|741\|ft\|m\|0\|abbr=on}} long ship: the cube root is 9, and 9 squared is 81, plus 1. The beam will usually be around {{convert\|82\|ft\|m\|0\|abbr=on}}, e.g. [[Seawaymax]].

			As catamarans have more than one hull, there is a different beam calculation for this kind of vessel.

			==BOC==
			BOC stands for Beam On Centerline. This term in typically used in conjunction with LOA (Length overall). The ratio of LOA/BOC is used to estimate the stability of multihull vessels. The lower the ratio the greater the boat's stability.

			The BOC for vessels is measured as follows:
			For a catamaran: the perpendicular distance from the centerline of one
			hull to the centerline of the other hull, measured at deck level.
			For a trimaran: the perpendicular distance between the centerline of the main
			hull and the centerline of either ama, measured at deck level



			==Other beams==
			Other meanings of 'beam' in the nautical context are:
			*'''Beam''' – a timber similar in use to a floor joist, which runs from one side of the hull to the other athwartships.
			*'''Carlin''' – similar to a beam, except running in a fore and aft direction.

			==Notes==
			{{Reflist}}

			==References==
			* {{cite book \|last=Hayler \|first=William B. \|coauthors=Keever, John M. \|title=American Merchant Seaman's Manual \|year=2003 \|publisher= Cornell Maritime Pr \|isbn= 0-87033-549-9}}
			* {{cite book \| last = Turpin \| first = Edward A. \| authorlink = \| coauthors = McEwen, William A. \| title = Merchant Marine Officers' Handbook \| url = \| edition = 4th \| series = \| date = \| year = 1980 \| month = \| publisher =Cornell Maritime Press \| location = Centreville, MD \| isbn = 0-87033-056-X \| pages = \| chapter = \| chapterurl = }}

			{{Ship measurements}}
			{{water-transport-stub}}

			[[Category:Nautical terms]]

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2011-08-03T13:23:54Z

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Nice to satisfy you, my title is Numbers Held though I don't really like being known as like that. Doing ceramics is what my family and I appreciate. Hiring is her working day occupation now and she will not change it anytime quickly. Puerto Rico is exactly where he's been living for many years and he will by no means transfer.<br><br>My page :: [http://Dore.gia.ncnu.edu.tw/88ipart/node/1326254 Dore.gia.ncnu.edu.tw]

Batting park factor - Revision history

en>Walter Görlitz: Added {{unreferenced}} tag to article (TW)

68.14.209.233: /* External links */