Can't be sure as there was no hospital nearby and we didn't get it checked out in the end, but pain wise probably when a boat lurched due to a large wave and I was sent flying into the side of the hull where the head of the large nails dotted along the hull was, hit my cheek, so painful. Couldn't eat right due to the pain for the rest of the holiday and it was very sore for some time. I think I probably fractured the zygomatic arch.