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The advice given on this site is based upon individual or quoted experience, yours may differ.
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There's not a whole lot of information, but it sounds like they hit a charted reef just before sundown and then had to wait out the night getting pounded by the surf.
They must have multiple redundant nav systems that are state of the art, so how does something like this happen? Even if the watch was asleep (not too likely considering the time of day), the electronics would have been chirping their concern that the reef was approaching.
I can't imagine the impact hitting a reef at 19 knots with the amount of energy it must have been carrying, it's surprising no one was hurt badly.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.