Warship and submarine classes broken down by hull, propulsion, sensors and armament, with displacement, range and combat figures given their sources.
The Electromagnetic Aircraft Launch System uses a linear induction motor and stored electrical energy to fling aircraft off a deck, trading steam for precision control over the launch stroke.
A submarine survives by not being heard, and every major design choice, from engine mounts to the propulsor, exists to keep its acoustic signature below the sea's own noise floor.
Aegis ties a ship's phased-array radar, computers, displays, and missiles into one air-defense system, and five decades after its first ship it also anchors U.S. and allied missile defense.
From the 30-kilowatt LaWS testbed aboard USS Ponce to the 60-kilowatt-class HELIOS on USS Preble, shipboard lasers have moved from experiment to deployed hardware.