 By war's end, torpedoes launched from warships had sunk one battleship, two armored cruisers, and two destroyers.The remaining over 80 warships would be sunk by guns, mines, scuttling, or shipwreck.The introduction of the torpedo boat resulted in a flurry of activity in navies around the world, as smaller, quicker-firing guns were added to existing ships to ward off the new threat.