VIII SIOP – Presentación 06

DEVELOPMENT OF FUTURE EXPANSION OF SAN VICENTE HARBOUR

IGOR KOEVOETS1
KOEN GRIBNAU
2
MART-JAN HEMEL
3
MENNO ONRUST
4

RESUMEN

The project focuses on the improvement and masterplan of the San Vicente Port. During this SIOP presentation, the focus will be on the improvements of nautical operations by means of a breakwater extension. Two type of nautical operations are investigated: the manoeuvring of vessels using tugs and the mooring of vessels along the quay. When the significant wave height is above 1.5 m, tugboats are not able to operate which will cause downtime. Mooring is mostly influenced by vessel movements. If the vessel movements exceeds a certain value, the loading and unloading efficiency decreases. This means that the service time of vessels along the quay will be higher. Generally, ports strive to have optimal loading conditions for efficiency for 98% of the time. To analyse both nautical operations, the wave climate inside the port has to be known. Only offshore wave data is available for the bay of San Vicente Port, so a wave model is needed to compute the wave climate in the port. For the so called ‘offshore to nearshore transformation’the numerical wave program Delft3D is used. The transformation consists out of multiple steps which will be elaborated on during the presentation. After the wave climate inside the port is computed, it has to be converted to vessel motions for which a vessel motion model is used. Analysing the tug conditions and vessel motions, the following can be said about the nautical operations for the current situation: 13% downtime for manoeuvring operations and an optimal loading efficiency 95% of the time. According to PIANC guidelines, these numbers are below average. To improve the nautical conditions, multiple breakwater extensions are modelled to enlarge the wave sheltering in the San Vicente Port. After analysing the breakwater extensions using the same methodology as described before, it becomes clear how much each breakwater extension will improve the nautical operations. Because a breakwater is designed for a lifetime of 25 years or more, the influence on a shift to larger container vessels is elaborated as well.

1 Delft University of Technology, Delft, The Netherland

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