USS Sterlet (SS-392) USS Sterlet (SS-392) USS "Sterlet" (SS-392), a "Balao"-class submarine, was the only ship of the United States Navy to be named for the sterlet, a small sturgeon found in the Caspian Sea and its rivers, whose meat is considered delicious and whose eggs are one of the world's great delicacies, caviar. Her keel was laid down on 14 July 1943 at the Portsmouth Navy Yard. She was launched on 27 October 1943 sponsored by Mrs. Charles A. Plumley, and commissioned on 4 March 1944 with Commander O. C. Robbins in command. Following fitting-out and shakedown training, "Sterlet" departed Key West,
Types of motorcycles used for motor-paced cycling events. While motorcycles typically have two wheels, some motorized tricycles are classed as three-wheeled motorcycles. Some brands have made various types of three-wheelers direct from the factory. Most of these vehicles are treated as motorcycles for registration or licensing purposes. Tilting three-wheelers keep all three wheels on the ground when they lean to negotiate curves. These include Honda's Gyro range, all of which have a front wheel that leans and a pair of rear wheels that do not, and the Piaggio MP3, which has two front wheels and a single rear wheel, all of which lean.