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Cooperative Charting


CoCh Committee

  R/C Diane M. Julum, JN-IN

Asst Chairman
  Stf/C Thomas J. Peltier, SN-IN

Asst Chairman
  Stf/C Phillip A. Benson, JN

  Barbara Shively

District Reps:

Districts 14 and 29
D/Lt/C Mahmoud M. Abdel-Monem, SN

Districts 9 and 19
Stf/C Phillip A. Benson, JN

Districts 10 and 13
P/C Glen Blake, N-CN

Districts 7 and 17
P/D/C Mack L. Gordy, Jr. AP

District 2
Lt/C Thurston L. Gray, SN

Districts 5 and 6
D/Lt Joanne Hancock, SN

Districts 4 and 26
D/Lt Thomas Hancock, SN

Districts 23 and 32
P/D/C James V. Hardin Jr., JN-CN

Districts 15 and 16
R/C Diane Julum, JN

Districts 11 and 20
D/Lt/C John E. Knapp, SN

Districts 1 and 12
P/C Billy Owens, AP

Districts 21 and 24
Stf/C Thomas J. Peltier, SN

Districts 3 and 33
R/C John J. Rodgers, SN-IN

Districts 22 and 30
P/C Stephen R. Schmidt, JN

Districts 25 and 28
P/D/C Dave Shively, JN

Districts 8 and 27
P/R/C James H. Strothers, SN-IN

Special Technical Asst
  P/R/C Horst Boettge, SN

Special Asst - WEBMASTER
  Lt/C Thurston L. Gray, SN

  Russ Proctor

  Duane Morrison



A Range Line Survey is similar to Depth Survey except recorded data are Longitude and Latitude of points along tracks identified by Range Markers. A range is defined as: ‘Two or more objects in line. Two beacons are frequently located for the specific purpose of forming a range to indicate a safe route or the centerline of a channel.. .” Ranges on NOAA paper charts are typically shown as two fixed aids connected by a dashed line that extends out from the fixed aids. This dashed line, called a leading line, becomes a solid line on the portion of the range where vessels are to transit, for instance in a maintained channel.

A Range Line Survey helps to determine if the range markers have remained in their correct positions. If you have the equipment to perform Depth Surveys and to use the DEPTH WIZ program, it would be natural to do a depth survey at the same time. This would help determine if there has been shoaling along the range.

Range line surveys must not be reported more often than every three years. To check the dates of recent surveys, log on to CCWEB. In the left column, click on Report Reference Information and select "Range Line Reports".

The Range Line Survey Program -- Background and Procedures

Nearest Light - A program to find a USCG light list number quickly.

A Tip -- Automating Range Data Input

Worksheet -- Range Line Surveys.

Field Guide and Summary -- RANGE LINE SURVEYS

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