Final answer:
The chairman infamously described the Titanic as 'unsinkable,' an idea that has become ingrained in the legacy of the historic maritime disaster. The provided texts, however, do not include this description, instead highlighting a different maritime struggle that captures the uncertainty and danger inherent in sea travel.
Step-by-step explanation:
In "The Sinking of the Titanic," the chairman described the Titanic as a powerful and unsinkable vessel, instilling a sense of confidence and safety among the passangers and crew. This notion of the Titanic's invincibility is tragically ironic given the events that unfolded on its maiden voyage. The excerpts provided do not directly quote the chairman's description; instead, they convey the desperate circumstances of another maritime disaster, illustrating the peril at sea and the human struggle against nature's overwhelming forces. These scenes emphasize the vulnerability of even the mightiest ships and the fleeting certainties in the face of disaster.