The Cape Cod Canal is a seven-mile long sea level canal connecting Cape Cod Bay to the north with Buzzards Bay to the south. Maintained by the US Army Corps of Engineers (USACE), it has a minimum channel width of 480 feet and an authorized depth of 32 feet at mean low water.
The Xue Long (Snow Dragon) is the premier polar vessel of the People’s Republic of China. It was built in the Ukraine in 1993 and modified upon its acquisition by China in 1994. Its major function is to serve as a resupply vessel and scientific research platform in the Antarctic and the Arctic.
The US Coast Guard adopted the concept of geographic districts when it absorbed the US Lighthouse Service in 1939. Previously, it had no formal segmentation of its chain of command based on geography. Rather, the chain of command was grouped around function.
The trireme was utilized as a warship in the Mediterranean Sea from the 7th century BC until the fall of the Roman Republic at about the commencement of the Christian era. No other warship design has survived in service for a comparable period. It was truly the dominant battleship of its day.