According to the report, with the area now being better patrolled, it radioed for assistance from the British Royal Navy. A helicopter gunship was dispatched, but by the time it arrived the skiffs had disappeared. The helicopter escorted the Spirit without further incident.
With this response and other responses in the past two months, it is comforting to know that the international community is now taking on the pirates in a way that makes them disappear rather than emboldening them. It is also of note that this approach makes the ship's crew the last, rather than the first, line of defense.
Good job all around!