Good morning, Whitewater.
Friday in town will have a forty-precent chance of showers and a high of sixty-two. Sunrise is 6:52 AM and sunset is 6:36 PM [corrected from 8:36 PM as we’d never have that much daylight in September], for 11h 43m 41s of daytime. We’ve a new moon today, with just .3% of its visible disk illuminated.
On this day in 1954, the United States Navy commissions the USS Nautilus:
The Nautilus was constructed under the direction of U.S. Navy Captain Hyman G. Rickover, a brilliant Russian-born engineer who joined the U.S. atomic program in 1946. In 1947, he was put in charge of the navy’s nuclear-propulsion program and began work on an atomic submarine. Regarded as a fanatic by his detractors, Rickover succeeded in developing and delivering the world’s first nuclear submarine years ahead of schedule. In 1952, the Nautilus‘ keel was laid by President Harry S. Truman, and on January 21, 1954, first lady Mamie Eisenhower broke a bottle of champagne across its bow as it was launched into the Thames River at Groton, Connecticut. Commissioned on September 30, 1954, it first ran under nuclear power on the morning of January 17, 1955.
Much larger than the diesel-electric submarines that preceded it, the Nautilusstretched 319 feet and displaced 3,180 tons. It could remain submerged for almost unlimited periods because its atomic engine needed no air and only a very small quantity of nuclear fuel. The uranium-powered nuclear reactor produced steam that drove propulsion turbines, allowing the Nautilus to travel underwater at speeds in excess of 20 knots.
JigZone‘s puzzle for today is of a covered bridge: