That's a shocking incident! Orcas attacking a boat is quite rare and tends to get a lot of attention due to their intelligence and behavior. In this case, the passengers' quick thinking in deploying a life raft certainly saved them, considering the sailboat was off the coast of Sines when it sank.
It's fascinating yet alarming how wildlife interactions can lead to such dramatic encounters. If you have any questions or need information regarding similar incidents or marine wildlife behavior, feel free to ask!