Passive Underwater Fire Control Feasibility System information
Passive Underwater Fire Control Feasibility System (or Study) (PUFFS) is a passive sonar system for submarines. It was designated AN/BQG-4 and was primarily installed on United States Navy conventional submarines built in the 1950s beginning with the Tang class, and also those converted to GUPPY III or otherwise modernized in the 1960s. It was also equipped on the nuclear-powered USS Tullibee (SSN-597). It was also installed on the USS Thomas A. Edison (SSBN-610) but never achieved operational status. Its transducers can be seen on pictures of the vessel. A version known as "Micropuffs" was fitted on Oberon-class submarines for the Royal Australian Navy, and as Type 2041 on the Upholder-class for the British Royal Navy. This class still serves in the Royal Canadian Navy as the Victoria class, where Micropuffs is known as BQG-501.[1] The system was notable for three tall, fin-like domes topside, except on Micropuffs installations. The system was retained on several submarines transferred by the US to foreign navies. It was associated with long-range passive detection of targets for the Mark 45 nuclear torpedo and other weapons. Most submarines backfitted with it were also lengthened 12–16 feet (3.7–4.9 m) to accommodate additional electronics and plotting rooms. It was also planned for Thresher and Sturgeon class nuclear submarines, but was not fitted on them except Micropuffs experimentally on Barb and Haddock.[2] With the exception of the four Canadian Victoria-class submarines, all PUFFS-equipped submarines have been disposed of or preserved as museum ships.
^Friedman, p. 246
^Friedman, Norman (1995). U.S. Submarines Through 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 16–17, 43. ISBN 1-55750-263-3.
and 16 Related for: Passive Underwater Fire Control Feasibility System information
PassiveUnderwaterFireControlFeasibilitySystem (or Study) (PUFFS) is a passive sonar system for submarines. It was designated AN/BQG-4 and was primarily...
sugar-frosted puffed grain breakfast cereal PassiveUnderwaterFireControlFeasibilitySystem, a US Navy submarine sonar system Douglas AC-47 Spooky (nickname "Puff...
while towed arrays are passive. An example of a modern active-passive ship towed sonar is Sonar 2087 made by Thales UnderwaterSystems. Modern torpedoes are...
Sensor System (I-REMBASS) is a passive acoustic sensor, which, with other MASINT sensors, detects vehicles and personnel on a battlefield. Passive acoustic...
"passive" remote sensing (when the reflection of sunlight is detected by the sensor). Remote sensing can be divided into two types of methods: Passive...
and surface-controlled grabbing devices. The system selected for a particular operation depends upon availability, operational feasibility and economics...
adequate ventilation is not available or other engineering controlsystems are not feasible or inadequate. In the United Kingdom, an organization that...
both ambient pressure and controlled pressure single atmosphere systems. The major categories of ambient pressure underwater breathing apparatus are: Scuba...
unexpected environmental conditions becoming lost or trapped underwater inability to control buoyancy and/or inability to apply thrust sufficiently to ascend...
general and local ventilation systems. Controls change how the task is performed. Some of the basic work practice controls include: following the laid procedures...
when needed. This modular payload system came to be known as "Standard Flex", or "StanFlex" for short. Feasibility studies during 1983 and 1984 led to...
natural "wicking" property that can draw water and nutrients in a passive hydroponic system. If too much water and not enough air surrounds the plants roots...
the system can be designed to not reveal potentially sensitive details of the object design and composition. The Multi-Mode Passive Detection System (MMPDS)...
technology (LO technology), is a sub-discipline of military tactics and passive and active electronic countermeasures, which covers a range of methods...
the Latin word "concretus" (meaning compact or condensed), the perfect passive participle of "concrescere", from "con-" (together) and "crescere" (to...
was fired from a truck-mounted discharger that could fire 72 mines at a time. In the 1950s, the US Operation Doan Brook studied the feasibility of delivering...