4. When it struck the iceberg, 6 filled.
Four. But they filled five.
Only four
five
RMS Titanic's first five compartments filled with water following a brush-by collision with an iceberg. The ship probably could have floated with as many as four compartments flooded, but with the loss of the fifth, the ship's head (or bow) was pulled down to a point where the rising water was able to spill over the tops of the following bulkheads one after the other, dooming the ship.
There are SIXTEEN watertight compartments on the titanic
I believe it was 5, but if only 4 had filled up, the ship would not have sunk.
It had 4
Titanic's master builder, Thomas Andrews, had taken courses in naval architecture and ensured that Titanic could stay afloat with up to four compartments flooded.
5 compartments were ruptered by the iceberg, which is one more that the Titanic could stand
Technically, everyone said the Titanic was unsinkable, though the White Star Line never made the claim. People thought this because the Titanic had compartments, and if one was filled with water, it would close and the ship would be fine. However, too many compartments filled when the iceberg hit.
Olympic Class Ocean liners can stay afloat with the first 3 or 6 separate compartmentsflooded but only to the top of the bulkhead.
6 watertight compartments