– several ships around the Cape of Good Hope have been severely damaged and nearly sunk by freak waves flooding their holds. Throughout the world ships such as Melanie Schulte (a German ship lost in the Atlantic Ocean) and MV Derbyshire (a British bulk carrier sunk in the Pacific Ocean) have suddenly broken up and sunk within minutes in extreme weather. Some have also suggested that instead of sinking, the ship was incapacitated by a freak wave and, having lost her rudder and without any means of contacting land, was swept southwards towards Antarctica to either be lost in the open ocean or founder on Antarctica itself. No evidence except the absence of the wreck supports this theory. Cargo shift The Waratah was carrying in her cargo holds around 1,000 tons of lead and 300 tons of lead ore concentrate, which is known under certain circumstances to liquefy due to the motion of the ship. This can affect the stability of the ship due to the free surface effect, potentially causing it to capsize. Today, ore concentrate is treated as hazardous cargo, with special measures required for its transport in ships; however, in 1909 there was little awareness about the dangers of carrying this material. Whirlpool Both at the time of the disappearance and since, several people have suggested that the Waratah was caught in a whirlpool created by a combination of winds, currents and a deep ocean trench, several of which are known to be off the southeast coast of Africa. This would explain the lack of wreckage, but there is no firm evidence that a whirlpool of sufficient strength to almost instantly suck down a ocean liner could be created as suggested. Explosion Given the evidence from the officers of the Harlow (see above), it has been speculated that the Waratah was destroyed by a sudden explosion in one of her coal bunkers. Coal dust can certainly self-combust and in the right proportions of air be explosive. However, no single bunker explosion would cause a ship the size of the Waratah to sink instantly, without anyone being able to launch a lifeboat or raft, and without leaving any wreckage. Aftermath The Waratah's disappearance, the inquiry and the criticism of the Blue Anchor Line generated much negative publicity. The line's ticket sales dropped severely and, coupled with the huge financial loss taken in the construction of the Waratah (which,