Page 208 - Introduction to Naval Architecture

194 RESISTANCE

Haslar has proposed in the circular notation:

Example 8.1
To illustrate the use of a model in calculating ship resistance a
worked example is given here. The ship is 140 m long, 19 m beam,
8.5m draught and has a speed of 15 knots. Other details are:
Block coefficient = 0.65
Midship area coefficient = 0.98
Wetted surface area = 3300 m 2
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Density of sea water = 1025 kg/m
Froude coefficient, / - 0.421 34

Tests on a geometrically similar model 4.9m long, run at
corresponding speed, gave a total resistance of 19 N in fresh water
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whose density was 1000 kg/m .
Solution