The Titanic was the world's largest luxury liner (882 feet, displacing 53,000 long tons), and was once described as being (nearly) "unsinkable".
The Titan was the largest craft afloat and the greatest of the works of men (800 feet, displacing 75,000 tons), and was considered "unsinkable".

The Titanic carried only 20 lifeboats, less than half the number required for her passenger capacity of 3000.
The Titan carried "as few as the law allowed", 24 lifeboats, less than half needed for her 3000 capacity.

Moving too fast at 23 knots, the Titanic struck an iceberg on the night of April 14, 1912 in the North Atlantic 400 miles away from Terranova.
Also on an April night in North Atlantic 400 miles from Newfoundland (Terranova) , the Titan hit an iceberg while traveling at 25 knots.

The unsinkable Titanic sank, and more than half of her 2208 passengers died.
The indestructible Titan also sank, more than half of her 2500 passengers drowning, their "voices raised in agonized screams."

Straight from Wikipedia.