Modern marine architecture is making steamships almost unsinkable, more quickly responsive to their helms, more seaworthy in every way.
"American Merchant Ships and Sailors"
Willis J. Abbot
In one of the scenes, the owner of Star Line, the shipping company that owned the now-sinking unsinkable, joins a lowered life-boat.
"Moral Deliberations in Modern Cinema"
Sam Vaknin
But some bits of wreckage of his plane had many unsinkable parts about it-the parachute ball for instance.
"Lords of the Stratosphere"
Arthur J. Burks