What caught me also was the interesting functional pairing of disaster with something useful. Before the lighthouse was just a series disasters.
Build a metaphorical lighthouse to steer and true course the rest of your days? It’s not that simple. You can’t have one without the other.
You aren’t who you are without knowing the feeling of the deck shuddering beneath you feet, hearing the moan and splintering tear of the timbers, and thinking “this ship is going down”.