Download or read book Aids to Navigation Principal Findings Report on the CAORF Experiment written by M. W. Smith and published by . This book was released on 1981 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report written by Marino, K.L. and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report written by M. W. Smith and published by . This book was released on 1984 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research reported here is part of the United States Coast Guard's Performance of Aids to Navigation Systems Project. The objective of the project is to provide guidelines for evaluation and design of AN systems in restricted waterways. The major effort has been the evaluation of aid systems under a variety of conditions on a marine simulator developed for the project. This report describes the validation of the simulator by comparing performance data collected at sea with performance data collected on the simulator. Ships were tracked electronically at sea and other data was collected manually in Chesapeake Bay in the approach to Baltimore, Maryland and Narragansett Bay in the approach to Providence, Rhode Island. The conditions observed in these restricted waterways were modeled on the USCCG/SA simulator and pilot performance was compared. This evaluation identifies the strengths and limitations of the simulator and the need for possible adjustments.

Download or read book Aids to Navigation Principal Findings Report Range Light Characteristics and Their Effect on Performance written by K. L. Marino and published by . This book was released on 1981 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment described here is one of a series done for the U.S. Coast Guard to quantify the relationship between variables related to aids to navigation and piloting performance in narrow channels and, potentially, safety in such channels. This is one of several experiments restricted to visual piloting and was performed on a simulator built for the U.S. Coast Guard at Eclectech Associates in North Stonington, Connecticut. The variable conditions evaluated were: (1) sensitivity ranges (high lateral sensitivity at K is approximately 4.5 or low lateral sensitivity at K approximately 0.5), (2) designated track (with the objective to stay either on the centerline or on the right quarterline), and (3) angle of turn (15-degree or 35-degree noncutoff turn). The constant conditions were a 500-foot channel with two 1.3 nm straight legs joined by a bend. Each straight leg has a range light marking the centerline of the legs and these were the only aids available. The scenarios were run at night with wind and current varying through the transit. The ship was a 30,000 dwt tanker with the bridge 75 feet forward from the center of gravity, and pilots were instructed to keep transit speed at 6 nots. The findings of the experiment are presented as the means and standard deviations of crosstrack position of transits under each condition. These are interpreted in terms of their implications for the design of channel markings. (Author).

Download or read book Aids to Navigation Principal Findings Report written by K. L. Marino and published by . This book was released on 1985 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is part of the U.S. Coast Guard's Performance of Aids to Navigation (AN) Systems Project. The objective of this project is to provide guidelines for evaluation and design of AN systems in restricted waterways. The major effort has been the evaluation of aid systems under a variety of conditions on a marine simulator developed for the project at Ship Analytics, Inc., North Stonington, Conn. This report describes the implementation task which was designed to experimentally test the draft manual's guidelines for evaluation and design of AN systems in restricted waterways. The Upper Narragansett Bay near Providence, Rhode Island, was the channel in which the draft manual's recommendations were implemented. Data was primarily collected at sea in both the original and modified channel. The at-sea data collection electronically tracked 30,000 dwt tankers inbound in the Upper Narragansett Bay. Data was also collected in the marine simulator developed for the project at Ship Analytics, Inc. Keywords: At-sea data collection; Risk assessment; Risk management; Ship tracking; Buoy placement piloting; Ship bridge simulator; and Short range aids to navigation.

Download or read book Aids to Navigation Principal Findings Report on the CAORF Experiment written by M. W. Smith and published by . This book was released on 1981 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report written by K. L. Marino and published by . This book was released on 1981 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report on the Ship Variables Experiment written by W. R. Bertsche and published by . This book was released on 1981 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report The Effect of One Side Channel Markings and Related Conditions on Piloting Performance written by K. L. Marino and published by . This book was released on 1981 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This experiment is one of a series done to quantify the relationship between variables related to aids to navigation and piloting performance in narrow channels and, potentially, safety in such channels. This is one of several experiments restricted to visual piloting, and further to buoys only. It was performed on a simulator built for the U.S. Coast Guard. The variable conditions evaluated were: (1) Straight channel markings (buoy configurations were: gated, on one-side inside relative to the turn, on one-side outside relative to the turn, and staggered); (2) Turnmarkings (two-buoy and three-buoy turns); (3) Buoy height above the water (10-foot and 17-foot buoys); (4) Spacing (buoys spaced at 5/8 nm and 1-1/4 nm); and (5) Visibility (at 3/4 nm and 1-1/2 nm). The constant conditions were a 500-foot wide channel with a 35-degree noncutoff turn run during the day with wind and current varying over the scenario. The ship was a 30,000 dwt tanker with the bridge 75 feet forward from the center of gravity, and pilots were instructed to keep transit speed at 6 knots. The findings of the experiment are presented as the means and standard deviations of crosstrack position of transits under each condition. These are interpreted in terms of their implications for the design of channel markings.

Download or read book Aids to Navigation Principal Findings Report on the Channel Width Experiment written by M. W. Smith and published by . This book was released on 1981 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Principal Findings Report on the Channel Width Experiment written by M. W. Smith and published by . This book was released on 1981 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment described here is one of a series done for the U.S. Coast Guard to quantify the relationship between variables related to aids to navigation and piloting performance in narrow channels and, potentially, safety in such channels. This is one of several experiments restricted to visual piloting, and further to buoys only. It was done on a simulator built for the U.S. Coast Guard at Eclectech Associates in North Stonington, Connecticut. The variables evaluated were: straight channel marking (staggered versus gated buoys), spacing (5/8 versus 1-1/4 nm), channel width (500 versus 800 feet), and intended track (center versus right-hand quarter). Tasks and current effects were varied within the scenario. The findings are presented as the means and standard deviations of crosstrack position of transits under each condition. They are interpreted in terms of their implications both for the design of channel making and for an understanding of the piloting task. A secondary purpose of the experiment was the comparison of performance on the USCG/EA simulator and on CAORF, the Maritime Administration's Computer Aided Operations Research Facility. (Author).

Download or read book Aids to Navigation Principal Findings Report on the Ship Variables Experiment The Effect of Ship Characteristics and Related Variables on Piloting Performance written by W. R. Bertsche and published by . This book was released on 1981 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: This experiment is one of a series done for the U.S. Coast Guard to quantify the relationship between variables related to aids to navigation and piloting performance in narrow channels and, potentially, safety in such channels. This is one of several experiments restricted to visual piloting, and further to buoys only. It was done on a simulator built for the U.S. Coast Guard at Eclectech Associates in North Stonington, Connecticut. The variables evaluated were: Ship Characteristics: an 80,000 dwt tanker with a rear bridge and an 80-foot height of eye versus a 30,000 dwt tanker with a midship bridge and a 45-foot height of eye; Size and Complexity of Bow Image: larger and smaller bow image for the 30,000 dwt tanker; Speed of transit: 6 knots versus 10 knots; buoy density: a three-buoy turn and short (5/8 nm) spaced, gated buoys versus a one-buoy turn and long (1-1/4 nm) spaced, staggered buoys; and Underkeel clearance: 1 foot versus 600 feet. Only selected combinations of these variables were included as scenarios in the experiment. Tasks and wind and current effects were varied within the scenarios. The findings are presented as the means and standard deviations of crosstrack position of transits under each condition. Observed differences in their inherent controllability parameters to provide a methodology for extrapolating the findings to a variety of ships not included in the experiment.

Download or read book Aids to Navigation Turn Lights Principal Findings Effects of Turn Lighting Characteristics Bouy Arrangements and Ship Size on Nightime Piloting Interim Report written by J. Multer and published by . This book was released on 1983 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation SRA Supplemental Experiment Principal Findings written by K. L. Marino and published by . This book was released on 1984 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Turn Lights Principal Findings written by J. Multer and published by . This book was released on 1983 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aids to Navigation Radar I Experiment Principal Findings written by J. Multer and published by . This book was released on 1983 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation study of turning in channels marked by buoys.

Download or read book Aids to Navigation Principal Findings on the CAORF Experiment written by M. W. Smith and published by . This book was released on 1981 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment described in the present report is the first of a series done for the U.S. Coast Guard to quantify the relationship between variables related to aids to navigation and piloting performance in narrow channels, and, therefore, safety in such channels. The present experiment was restricted to visual piloting, and, further, to buoys only. It was done at CAORF, the Maritime Administration's Computer Aided Operations Research Facility in Kings Point, New York. The variables evaluated were: straight channel marking (staggered versus gated buoys), spacing (5/8 versus 1-1/4 nm), turnmarking (one versus three buoys), day/night, detection range (3/4 versus 1-1/2 nm), angle of turn (15 versus 35 degrees), and turn radius (noncutoff versus cutoff). A scenario was planned to include both trackkeeping and maneuvering tasks done both with and without perturbation. The findings are presented as the means and standard deviations of the crosstrack position of transits under each condition. They are interpreted in terms of their implications both for channel design and for an understanding of the piloting process. (Author).