The satellite USA 181, also known by its OBJECT_ID 2005-004A, is a NOSS-3 type spacecraft launched on February 3, 2005, from the Cape Canaveral Air Force Station's SLC36B launch pad using an Atlas 3B launch vehicle. It has a cylindrical shape with dimensions of approximately 2 meters in length and diameter, and it weighs about 1000 kilograms both at launch and dry mass. The satellite is owned by NROC/USN and was manufactured by LMSSD for the purposes of Ocean Surveillance and ELINT (Electronic Intelligence). Its power system consists of solar arrays complemented by batteries. Further details on its equipment, configuration, motor type, or specific mission events are not provided in the given data.