Experimental Investigation of the Shipping of Water on the Bow of a Containership

Containership bodylines

Detail of the box installed on the deck and position of the pressure transducers

Heave and pitch amplitudes of the transfer function

Comparison of heave first harmonic amplitudes for the S175 containership and the present ship, as a function of the wave steepness

Comparison of the bodylines of the present containership (dashed lines) and the S175 containership (continuous lines). For comparative purposes, one of the hulls was scaled such that both ships have the same breadth.

Amplitudes of the relative motion at stations 20 and 18

Second harmonic amplitudes of the relative motions at stations 20 and 18

Time record of the relative motion at station 20 and the first harmonic of the same time signal. Head regular waves with λ∕Lpp=1.2 and kζa=0.106.

Peaks and mean values of the relative motion at stations 20 and 19

Correlation between the height of water on deck and the pressure on the deck (regular waves)

Correlation between the height of water on deck and the pressure on the box (regular waves)

Correlation between the height of water on deck and the impact force on the box (regular waves)

Time records of wave elevation, heave, pitch, relative motion at station 20, and height of water on deck at point A. Head regular waves with λ∕Lpp=1.2 and kζa=0.106.

Record of the ship responses in irregular waves (Hs=8.0m and Tp=12s)

Detail of the shipping of water and impact pressures and forces on deck

Correlation between the height of water on deck and the pressure on the deck (irregular waves)

Correlation between the height of water on deck and the pressure on the box (irregular waves)

Correlation between the height of water on deck and the impact force on the box (irregular waves)

Correlation between the height of water on deck at point A and the freeboard exceedance at station 20