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Title: Houston ship channel
Authors: Webb, Dennis W.
Daggett, Larry L.
Hewlett, J. Christopher
Keywords: Channels (Hydraulic engineering)
Houston Ship Channel (Tex.)
Publisher: Coastal and Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Coastal and Hydraulics Laboratory (U.S.)) ; no. ERDC/CHL TR-09-4
Abstract: The Houston Ship Channel is located on the Gulf of Mexico coast in eastern Texas. The entrance channels serve the ports of Houston, Galveston, and Texas City. Two different pilot groups, The Houston Pilots Association and the Texas City/Galveston Pilots Association, use the waterway. The Houston Ship Channel is heavily trafficked, and two-way traffic is necessary to keep the ports on schedule. Research conducted at ERDC in 1990-1994 recommended widths for two-way traffic of the design vessels based upon the results of a real-time ship simulator study. The simulator study utilized two ship simulators, coupled together, to model two-way traffic. This was the first time two simulators were used to determine channel width requirements. A survey of ship motion utilizing Differential Global Positioning System (DGPS) was conducted to develop the algorithms for two-way traffic. Due to its unique complexity, this project was selected for monitoring under the Monitoring Completed Navigation Projects Program during the time period February 2002 through June 2005 when the channel dimensions were increased from 40 ft deep by 400 ft wide to 45 ft deep by 530 ft wide. A new DGPS survey was undertaken utilizing newer more accurate equipment than had been previously used to record two-way traffic in the Houston Ship Channel. It was necessary to understand the behavior of ship(s) within the navigation channel by analyzing track plots of the ship’s footprint showing the position and orientation of the ships at specific intervals. This was particularly helpful in analyzing control and response of the ships, and reactions to factors such as bank effects and ship-to-ship interactions. Monitoring data obtained in the prototype were used to determine how well the ship-to-ship interaction algorithms used in the ERDC Ship/Tow Simulator compared with real-world data. These data were used to develop enhanced and significantly more accurate algorithms for the Ship/Tow Simulator. This knowledge, when applied to future studies, will result in more accurate simulation modeling of proposed navigation projects.
Description: Technical Report
Gov't Doc #: ERDC/CHL TR-09-4
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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