Aids to Navigation change in ship channel

11 Feb 2025 / Houston, United States

The Captain of the Port (COTP) is advising mariners of a change in channel dimensions within the Houston Ship Channel from Lights 63/64 to Lights 83/84 (South Boaters Cut to Atkinson Island).

New Project 11 Channel dimensions are in effect impacting a section of the Houston Ship Channel from Light 63/64 (Station 57+000) to Light 83/84 (Station 16+000), known as Segment 1B.

Surveys have been successfully completed extending the main channel to 700 feet wide by 46 feet deep with barge lanes on either side which are 235 feet wide by 12 feet deep. Depth based on Mean Lower Low Water (MLLW) in this section. USCG Aids to Navigation (AtoN) Teams have relocated aids to navigation from Light 63 to Light 84 according to the new channel dimensions.

Currently NOAA charts “do not” reflect the new AtoN positions, however, USCG is actively working with NOAA to make chart corrections as soon as possible.

These new channel dimensions are available for use, however, Mariners are advised to proceed with vigilance as they accustom themselves to the new dimensions. The new channel width (700’) reverts to the previous channel width (530’) at the position of Lights 83/84…

(For information about operations in the United States, contact GAC North America at [email protected])

Source: U.S. Coast Guard Sector Houston-Galveston Marine Safety Information Bulletin 02-25

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