>>2004082In the case of the Titanic, the ship sank before they could get all twenty lifeboats off the ship (Collapsibles A and B were swamped/capsized before they could be launched and floated away as the ship was sinking) so an addition twenty boats wouldn't really have made much of a difference. In fact, it might have made the disaster even worse because it would have dramatically increased loading and launch times for each individual boat.