Iran unveiled a new weapon in its arsenal last year called the Bavar 2 or Confidence 2, a stealth flying boat that can be equipped with surveillance gears, machine guns, and even missiles. Since its unveiling, Bavar 2 has come under much criticism from the rest of the world.
Many of the criticism is directed at the supposed "stealth" of the flying boat. Iran claims that the specially designed hull of the aircraft is undetectable by radar but some say its just because the Bavar 2 flies so low that it is below the range of radar most of the time. Also, some have joked that the Bavar 2 looks like a watercraft that anyone can order online in kit-form and assemble.
Despite the criticisms, the Bavar 2 does make for a good surveillance aircraft. Its estimated top speed of 100 knots (115.2 miles per hour) and stealth help it patrol Iran's waters keeping out uninvited foreign vessels/aircraft. It could also use its on-board machine gun and even missiles to harass larger, slower vessels. Also, since the Bavar 2 is relatively small and does not employ a lot of high tech equipment, it can be produced in large numbers with relative ease.