Small Mistakes That Cost Millions To Fix

Spanish submarine couldn’t resurface – $2.2 billion

In 2013, the Spanish government invested $2.2 billion into a state of the art submarine called The Isaac Peral. However, just before it was due for launch, engineers discovered a major flaw in the design.

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They realized that the submarine wasn’t even complete yet and its weight was just too much. If it was too heavy it wouldn’t be able to resurface. At this point they had to go back and change the whole design.