Weather forecast provided by the Bureau of Meteorology indicates that a severe storm
is approaching Melbourne within the next 24 hours. The peak of the storm is expected
at 12:30PM on September 18th, when a Southwesterly wind (i.e. wind direction of 225
degrees) will reach a maximum speed of 27.7m/s. At the same time, a Southwesterly
swell (swell direction of 215 degrees) is also forecasted. The expected swell height is
1.4m and swell period is 13.1s.
At approximately 12:30PM, right at the peak of the storm, a Bulk Carrier heading to
the Port of Geelong is expected to enter Port Phillip Bay.
Assume that the ship is 260m long and its draught is 11.6m. Further, assume that the
ship moves at a speed of 7 knots.
For simplicity, consider that the navigation channel from Port Phillip Heads and Portof Geelong is 140m wide. Water depths in the Port Phillip Bay can be extracted from
the bathymetry provided during lectures.
You are the Harbour Master in charge at Port of Geelong and you must decide
whether or not the ship can enter Port Phillip Bay and approach the Port.
1) Use the bathymetry provided in class to forecast marine conditions (waves,
tides and currents) with the aid of the wave and flow module of DELFT3D
(N.B. this was done during the computer exercise on September 17th);
2) Analyze (and discuss) wave conditions at key points (clearly justify why you
selected these key points);
3) Use marine conditions to set up the Canadian Waterways Programme.
Calculate the minimum requirements the ship needs to navigate safely;
4) How does this minimum requirements compare with the environmental
conditions during the storm? What are your conclusions and
recommendations? (provide a well justified answer).
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