CRANE PRODUCTIVITY AND SHIP DELAY IN PORTS

This paper studies the effect of crane operations on ship service at port terminals. It first proposes a simple, approximate approach to calculate the maximum berth throughput during periods of congestion. The key assumption is that the workload distribution (over time) for the ships at berth is the same as the workload distribution for the ship population as a whole. The validity of this assumption is tested with simple, exact models for a variety of scenarios involving different kinds of ships and crane operating strategies. The paper then examines the effect that two extreme crane operating strategies have on ship delay, when the traffic level does not exceed the maximum throughput. This is done for an idealized situation designed to highlight the impact of crane operations while admitting closed-form solutions. The average ship delay can vary considerably with the crane operating strategy.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1989/1251/1251-001.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=CRANE+PRODUCTIVITY+AND+SHIP+DELAY+IN+PORTS&author=C.+Daganzo&publication_year=1989
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309050022
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1251, Transport Supply Analysis. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Daganzo, Carlos F
• Publication Date: 1989

Media Info

• Features: Figures; References;
• Pagination: p. 1-9
• Monograph Title: Transport supply analysis
• Serial:
  • Transportation Research Record
  • Issue Number: 1251
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Cranes; Labor; Physical distribution; Ports; Productivity; Ships; Traffic congestion; Traffic delays
• Uncontrolled Terms: Congestion; Work
• Old TRIS Terms: Operating strategies
• Subject Areas: Freight Transportation; Highways; Marine Transportation; Planning and Forecasting; Vehicles and Equipment; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00495526
• Record Type: Publication
• ISBN: 0309050022
• Files: TRIS, TRB
• Created Date: Jul 31 1990 12:00AM