Answer:
There were 16 watertight compartments and a double bottom.
Explanation:
The builders of the Titanic ship believed the ship was unsinkable because of the many fail-safe mechanisms that was built into the large ship.
An important safety mechanism that gave the builders much confidence about the Titanic unsinkable was the construction of 16 watertight compartment S and a double bottom which would make it almost impossible for the ship to sink.