Happened across this pic:
The Advanced Electric Ship Demonstrator “Sea Jet” undergoes sea trials, Nov. 30, 2005, on Lake Pend Oreille in Bayview, Idaho. The 133-foot vessel is testing an underwater discharge water jet called AWJ-21, a propulsion concept with the goals of providing increased propulsive efficiency, reduced acoustic signature, and improved maneuverability over previous destroyer class combatants. U.S. Navy photo by John F. Williams
Murdoc’s gotta admit that he was unfamiliar with this DD(X) prototype. At least that’s what it looks like.
Found an aritcle in MarineLog which includes
An underwater discharge waterjet from Rolls-Royce Naval Marine, Inc., called AWJ-21, will be among the first technologies tested. It allows vessels to operate in shallow water with increased maneuverability and stealth.
Rolls-Royce also took the role of prime contractor for ship construction and system integration of the diesel/battery electric drive propulsion system.
The AWJ-21 is designed to increase ship speed, making hulls sleeker by working without rudders, shafts and propeller struts. Unlike conventional waterjets, the system works completely underwater, reducing noise and surface wake and improving stealth.
The lightweight and compact AWJ-21 allows ships to operate in shallow waters. Its integrated steering and reversing system improves maneuverability at low speeds. Pat Marolda, Rolls-Royce President–Naval, said: “This is a significant milestone in our development of an advanced waterjet technology which offers new parameters in performance, bringing real benefits to the U.S. Navy”.
Following demonstration of the AWJ-21, the RIMJET propulsor from General Dynamics Electric Boat will be installed in Sea Jet for evaluation. The RIMJET is a novel type of podded propulsion system that relies on a permanent magnet motor to drive the propeller.
Murdoc wants one.