The RUR-5 ASROC is an all-weather, all sea-conditions anti-submarine missile system. Developed by the United States Navy in the 1950s, it was deployed in the 1960s, updated in the 1990s, and eventually installed on over 200 USN surface ships, specifically cruisers, destroyers, and frigates. The ASROC has been deployed on scores of warships of many other navies, including Canada, Germany, Italy, Japan, Taiwan, Greece, Pakistan and others.
ASROC Launcher on board Mölders (D186)
The destroyer USS Agerholm fires an ASROC with a nuclear depth bomb in shot Dominic Swordfish (1962)
ASROC 'Matchbox' reload doors are visible in this photograph of the Japanese Asagiri-class destroyer, in 2008.
ASROC launch from USS Charles F. Adams, in 1960
A frigate is a type of warship. In different eras, the roles and capabilities of ships classified as frigates have varied.
A sailing frigate of 1802. The French Penelope.
Baden-Württemberg, lead ship of her class of frigates of the German Navy, currently the biggest frigates worldwide.
Light frigate, circa 1675–1680
Boudeuse, of Louis Antoine de Bougainville