My attempts at trivia photo quizzes usually don't get much response, but let's try one anyway. The answer will appear in a historical blog post late today. This relatively small vessel, 40.2 meters (131 feet) in length, belonged to a Middle Eastern Navy. It managed to change the course of a major war, decide the outcome of a battle that had not yet begun, and derail the career of major political figure. Please post only if you recognize it; Google Image Search really isn't playing fair, and there are no prizes other than a mention on the blog. I deliberately chose a photo without a visible flag.