ERDC/CHL CHETN- IX-7
December 2001
(11,000 ft2). The model scale was
selected to allow proper reproduction
of hydrodynamic conditions.
Model Ship: A 1:75 scale model of
the World Utility was used in this
study because its shape and
dimensions are typical of the cargo
carriers and tankers using the harbor
during the prototype measurements
(Figure 6). The ship has a length of
196 m (643 ft), a beam of 32 m
(105 ft), a draft of 10.9 m (35.8 ft)
at a full-load displacement of
Figure 5. Physical model of Barbers Point Harbor at the
57,500 metric tons (mt) (1 mt =
ERDC, Coastal and Hydraulics Laboratory (CHL)
1,000 kg), and a draft of 6.5 m
research facilities
(21.3 ft) at a light ship displacement
of 9,700 mt (see Table 2). Forward and reverse speeds and rudder angle were remote-controlled.
The vessel was statically balanced with measured weight distribution and a digital level.
Dynamic balance was performed with checks of roll and pitch natural frequencies.
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