R.Manasseh Fluid Dyn Papers
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The yacht passed though Sydney Heads at 0745. The ocean water temperature was
. Winds were south-westerly initially at about 
and
fell to 
by 10-15 km offshore, slowly changing through westerly
to northerly. First indications of a sea breeze were noted at about 0920 at a
point about 15 km offshore and an irregular onshore flow at 0925. The yacht
reached a point 35 km offshore at 1043 then returned. Consistent easterly winds
were not found until 1045 when they were north-easterly at . The
wind speed increased gradually to 
and the direction changed to
east-north-easterly by 1230 (17 km offshore). The yacht passed back through
Sydney Heads at 1345.