Demonstration and Shakedown Operation

A Demonstration and Shakedown Operation (DASO) is a series of missile tests conducted by the United States Navy and the Royal Navy.[1] These tests are employed to validate a weapon system (SLBM) and ensure a submarine crew's readiness to use that system. A shakedown operation usually occurs after a refueling and overhaul process or construction of a new submarine. Testing of missile systems allows collection of flight-data, and examinations of submarine launch platforms.[2]

Logo used by the US Navy Strategic Systems Programs, which carries out shakedown operations

The first DASO test occurred July 20, 1960 on the USS George Washington, using the Polaris A-1. Modern tests use the UGM-133 Trident II, launching from an Ohio-class submarine.[3]


  1. ^ "SUBMARINE MISSILE FIRINGS" (PDF). Retrieved 27 November 2017.
  2. ^ "Successful Trident II D5 Missile Flight Test Supports Navy Submarine Certification for Strategic Patrol". Retrieved 27 November 2017.
  3. ^ "The Fleet Ballistic Missile Strategic Weapon System: APL's Efforts for the U.S. Navy's Strategic Deterrent System and the Relevance to Systems Engineering" (PDF). Retrieved 27 November 2017.