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Shallow Water Effects (1/2) - Coggle Diagram

- - - - Sinkage
      - Trim
      - Increased frictional resistance
- - - - Deep water
        
        \( V²= \dfrac {gL_w}{2 \pi} \)
        
        Voyeur Vê RaizGa eLa com 2 Picas é profunda
      - Shallow water
        
        \( V²= gh \)
        
        \( V= \sqrt{gh} \)
        
        Critical value
        
        É crítico quando Vê e não RaizGahh
- - - - with shallow water
- - - - lower speeds
        
        \( \sqrt{gh} < 1,77\sqrt{gL_w} \)

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Shallow Water Effects (1/2)

Shallow Water Effects (1/2)

Low clearence

below keel

High water veloc

Low pressure

Consequence

Sinkage

Trim

Increased frictional resistance

Also sideways (Canal)

worsen consequences

Limits

Speed

avoid touching bottom

Changes

wave pattern

Surface velocity of waves

Deep water

Shallow water

$V²= \dfrac {gL_w}{2 \pi}$

\( V²= gh \)

Wave change (shallow water)

\( V= 0,4\sqrt{gh} \)

\( V= \sqrt{gh} \)

Critical value

\( V= \sqrt{gh} \)

\( V= 1,4\sqrt{gh} \)

Havelock

Wave of translation

Very high WAVE resistance

Critical speeds

happens earlier

when in shallow water

Wave of translation

appears at

lower speeds

Subcritical

Supercritical

Voyeur Vê RaizGa eLa com 2 Picas é profunda

É crítico quando Vê e não RaizGahh

\( \sqrt{gh} < 1,77\sqrt{gL_w} \)

Does not Change wave pattern

with shallow water

Only divergent