The Titanic colliding with the iceberg, along with the sinking of its sister ship, The Britannic (which sank due to a German mine during WW1) was a simple case at being at the wrong place at the wrong time. The iceberg that the Titanic hit was a broken chunk of ice from a glacier that followed the southern currents which has been an ongoing cycle from the Ice Age, way before the invention of the Christian/Jewish/Muslim God.
You will find me on my ark, floating gently away on a sea of molten lava. An ark filled with lush maidens and perhaps a pair of cats (I like housecats) but no other animals. Dress lightly - it will be warmish - and bring your own maidens.
So basically your arc is a huge asbestos party barg! Whoo hoo! Now that I think about it, I'd hate to bust your bubble, but your asbestos arc won't float on a bed of molted lava (too light), just like how a wooden arc (yes, Noah's party barge - half the size of the Titanic) wouldn't float either. This thing called the Laws of Physics can suck at times.