Alternative Manoeuvres to Reduce Ship Scour

Scouring and sedimentation effects on the seabed induced by ship propellers during ship manoeuvring near harbour structures affect both structure stability and ship manoeuvring capabilities. This contribution proposes solutions at an operational level using the automatic identification system (AIS)...

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Bibliographic Details
Published in:Journal of navigation 2021-01, Vol.74 (1), p.125-142
Main Authors: Castells-Sanabra, Marcella, Mujal-Colilles, Anna, LLull, Toni, Moncunill, Jordi, Martínez de Osés, F.X., Gironella, Xavi
Format: Article
Language:English
Subjects:
Boats
Bridges
Case studies
Harbors
Harbours
Maneuvers
Mooring lines
Ocean floor
Port authorities
Ports
Propellers
Reduction
Scour
Sea level
Sedimentation
Simulators
Stability
Structural stability
Tugboats
Weather
Wind
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Summary:Scouring and sedimentation effects on the seabed induced by ship propellers during ship manoeuvring near harbour structures affect both structure stability and ship manoeuvring capabilities. This contribution proposes solutions at an operational level using the automatic identification system (AIS) and a bridge simulator. Two new alternative manoeuvres were designed and tested on a bridge simulator to obtain expected maximum scour depth and the results were compared with that of real manoeuvres (i) using mooring lines, and (ii) with tug assistance. A total of 42 test scenarios combining several manoeuvres and meteorological conditions were reproduced. Results confirmed a clear reduction in erosion depth with the alternative manoeuvres, with total reduction when using the tugboat. The presented methodology can be very useful to port authorities to prevent the effects of ship erosion on harbour infrastructures.
ISSN:0373-4633
1469-7785
DOI:10.1017/S0373463320000399