The cast of Below Deck Mediterranean sure knows how to make a splash. After Bravo released the first trailer for season 10 on Wednesday, August 27, viewers were thrilled to see some returning faces, including deckhand Nathan Gallagher. "This past charter season has been one of the toughest times in my entire life," Nathan - who was promoted to a bosun in season 10 - says in the sneak preview. "I thought I was going to come on as a first-time Bosun and kill it.