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| StriperTalk! All things Striper |
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05-07-2007, 12:40 PM
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#1
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President - S-B Chapter - Kelly Clarkson Fan Club
Join Date: May 2005
Location: Rowley
Posts: 3,781
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Question about reading nautical charts
Hey guys, what do depth numbers in parenthesis mean?
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05-07-2007, 12:43 PM
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#2
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Registered User
Join Date: Feb 2003
Location: Newtown, CT
Posts: 5,659
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Don't understand what you mean.
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05-07-2007, 12:47 PM
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#3
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President - S-B Chapter - Kelly Clarkson Fan Club
Join Date: May 2005
Location: Rowley
Posts: 3,781
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The numbers that indicate the depth of the water, some times they are in parenthesis like it will say 5, then right next to it (7) or something like that.
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05-07-2007, 01:04 PM
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#4
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Ruled only by the tide
Join Date: Mar 2004
Location: Truro
Posts: 801
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Just a guess
Sometimes when data are presented in charts and graphs numbers in parenthesis will indicate the number of measurements taken (in this instance the number of soundings taken to derive the avg. depth). But I'm only guessing as far as a nautical chart goes.
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Three-fourths of the Earth's surface is water, and one-fourth is land. It is quite clear that the good Lord intended us to spend triple the amount of time fishing as taking care of the lawn.
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05-07-2007, 01:10 PM
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#5
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President - S-B Chapter - Kelly Clarkson Fan Club
Join Date: May 2005
Location: Rowley
Posts: 3,781
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yeah, if it helps, a lot of the numbers in parenthesis are near rocks
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05-07-2007, 01:22 PM
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#6
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Registered User
Join Date: Jul 2005
Location: Springfield, MA
Posts: 425
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Could you be looking at small humps and the numbers are breaking the outline?
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05-07-2007, 01:25 PM
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#7
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Registered User
Join Date: Mar 2007
Posts: 186
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the legend on the chart will describe ever detail. check there for the specifics for your chart. Usually for lights and or other extra detail are in parenthesis that might tell you their flash codes.... ie: Fl (1+4+3) for Minots...with other info such as the height and how far it can be seen...not usually in parenthises...
as well as the aforementoned warnings for rocks and such...
but definately check out the legend on the chart you are referring to...
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05-07-2007, 08:29 PM
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#8
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Fish Hound
Join Date: Jul 2006
Location: Shrewsbury, MA & Mashpee, MA
Posts: 1,159
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also sometimes when the parenthesis are near rocks, it means that the top of the rock is three feet below the water line at mean low tide. when there is an * , it means the rock is above the water line at mean low tide and is visible.
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"There are many things in life that will catch your eye, but only a few will catch your heart.....pursue those."
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05-07-2007, 08:30 PM
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#9
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Fish Hound
Join Date: Jul 2006
Location: Shrewsbury, MA & Mashpee, MA
Posts: 1,159
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shoulda said if the chart looks like this: (3) , it means that the rock is three feet below, but this number changes where the rocks are, its obv not always three feet for every rock if i had confused anyone in my last post.
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"There are many things in life that will catch your eye, but only a few will catch your heart.....pursue those."
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05-07-2007, 09:27 PM
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#10
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Registered User
Join Date: Jul 2006
Posts: 66
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I'm lucky if I can find the water...
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05-08-2007, 07:02 AM
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#11
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Registered User
Join Date: Aug 2003
Location: Lincoln, RI
Posts: 621
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Parentheses identify soundings or height that are out of position. IOW, the numbers are not directly over the spot to which they refer, but usually adjacent to them. On some charts a line is drawn to the referred structure instead of parentheses.
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Best regards,
Roger
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05-08-2007, 08:53 AM
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#12
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President - S-B Chapter - Kelly Clarkson Fan Club
Join Date: May 2005
Location: Rowley
Posts: 3,781
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thanks for all the help guys, I think I got it now!
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