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Three lights, two ranges.

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Postby island » Mon Mar 14, 2005 7:24 pm


There is a front range light that has two rear range lights to identify each of two river ranges.

What lights are these?
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Postby beachbum1616 » Mon Mar 14, 2005 8:32 pm


:-k
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Postby Kevin vk2ce » Tue Mar 15, 2005 12:45 am


I assume you are talking about your country Dave. That combination and vice versa is not uncommon out here.
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Postby island » Tue Mar 15, 2005 4:29 am


Kevin,

Yes. in the U.S..

For all I know there may likely be more than one dual range combination in this country.
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Postby Grover1 » Tue Mar 15, 2005 4:44 am


Dave,

The name escapes me but isnt it along the Delaware river here in NJ?
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Postby Grover1 » Tue Mar 15, 2005 5:28 am


Dave...

Tinicum Front Range Light ... :?:

http://www.njlhs.burlco.org/tinfrtrg.htm

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Postby beachbum1616 » Tue Mar 15, 2005 6:09 am


Barry,

That is what I originally thought, but the question asks for "TWO rear range lights to identify each of two river ranges."

What lights are THESE lights?


Island,

Can we get some clarification here?
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Postby island » Tue Mar 15, 2005 6:10 am


Barry. You named one of them.
a.k.a. Billingsport Front Light

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Postby island » Tue Mar 15, 2005 6:37 am


clarification---

From the link Barry posted;
Like the wooden tower it replaced, this light serves as the front range light for two ranges - the Tinicum Range (pointing downriver) and the Mifflin range (pointing up-river).


If this light serves as the front range light for two ranges then to my way of thinking the other two would be rear range lights. If so then the Tinicum Front Range Light is also the Mifflin Front Range Light.

The USCG 5th District List of Lights states that the front range light for Mifflin range is on the same tower as the light for the Tinicum range.
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Postby island » Tue Mar 15, 2005 7:52 am


More clarification;
FG is the Mifflin Rear Range, FR is the Tinicum Rear Range
Iso R is the Mifflin Front and IsoG is Tinicum Front
The small intersecting dashed lines on this map are the range lines

[url]http://mapserver.maptech.com/homepage/index.cfm?lat=39.84771474822886&lon=75.25263206286058&scale
=40000&zoom=50&type=0&icon=0&searchscope=dom&CFID
=3998754&CFTOKEN=70587116&&latlontype=DMS[/url]
The Tinicum Range is on the left, the Mifflin Range is on the right. The Billingsport Range in the middle has its own set of range lights
Last edited by island on Wed May 11, 2005 8:38 am, edited 1 time in total.
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Postby ron » Wed Mar 16, 2005 7:20 pm


ok what about two fronts and one commoon rear?
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Postby island » Thu Mar 17, 2005 9:42 am


ok what about two fronts and one commoon rear?


I have no knowledge of a range light configuration having two front and one rear. Such would be possible at a sharp bend in a river or similar and where the point of intersection of two range lines was a sufficient distance on land to facilitate adequate distances between the front and rear lights.

Additional lights would be needed to identify the points of transition and directions to follow in the space between ranges. For the trivia subject ranges on the navigation chart posted above this need is met by the Billingsport Range lights and by transition point lighted buoys positioned at each end of this 1.3 mile range.
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Postby ron » Thu Mar 17, 2005 3:44 pm


more particular is that there was a range with two fronts and one common rear, since discontinued
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Postby Kevin vk2ce » Thu Mar 17, 2005 11:23 pm


The entrance to Port Phillip bay which is the shipping seaway for the port of Melbourne has a narrow channel called, suprisingly, the Narrows or the Rip. The black lighthouse at Queenscliffe is the rear light and there are several front range lights which tell the ships where they are in relation to each side of the channel.

http://www.lighthouse.net.au/lights/VIC ... scliff.htm
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Postby island » Fri Mar 18, 2005 8:53 am


Kevin. So where are these range lights in relation to Queenscliffe? My collection of navigation charts is limited to Maine waters. (In searching for such I ended up in Geelong with a group of Newfies from the Sybil.)
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