However, many witnesses who had travelled on the ship testified that the "Waratah" felt unstable, frequently listed to one side even in calm conditions, rolled excessively, and was very slow to come upright after leaning into a swell, and had a tendency for her bow to dip into oncoming waves rather than ride over them. One passenger on her maiden voyage said that when in the Southern Ocean she developed a list to starboard to such an extent that water would not run out of the baths, and she held this list for several hours before rolling upright and then settling down to a similar list on the other side. This passenger, physicist Professor William Bragg, concluded that the ship's metacentre was just below her centre of gravity. When slowly rolled over towards one side, she reached a point of equilibrium and would stay leaning over until a shift in the sea or wind pushed her upright.