River-class frigate
[1] Originally called a "twin-screw corvette", the name "frigate" was suggested by Vice-Admiral Percy W. Nelles of the Royal Canadian Navy.The River-class ships were designed by naval engineer William Reed, of Smith's Dock Company of South Bank-on-Tees, to have the endurance and anti-submarine capabilities of the Black Swan-class sloops, while being quick and cheap to build in civil dockyards using the machinery (e.g. reciprocating steam engines instead of turbines) and construction techniques pioneered in the building of the Flower-class corvettes.[1] Fifteen Canadian frigates were initially fitted with one 4 in (100 mm) gun forward but with the exception of HMCS Valleyfield, they were all eventually upgraded to the twin mount.[1] River-class frigates were the first Royal Canadian Navy warships to carry the 147B Sword horizontal fan-beam active sonar transmitter, in addition to the regular ASDIC.Better radar and radio direction-finding equipment improved the RCN's ability to find and track enemy submarines over previous classes.
River class (disambiguation)HMCS WaskesiuWorld War IIRoyal NavyRoyal Australian NavyRoyal Canadian NavyFree French Naval ForcesRoyal Netherlands NavySouth African NavyUnited States NavyArgentine NavyRoyal Ceylon NavySri Lanka NavyChilean NavyRoyal Danish NavyDominican NavyEgyptian NavyIndian NavyIsraeli NavyRoyal Malaysian NavyRoyal Moroccan NavyMyanmar NavyRoyal New Zealand NavyRoyal Norwegian NavyPakistan NavyPeruvian NavyPortuguese NavyLoch classSuez Crisislong tonsreciprocating vertical triple expansionParsonssteam turbinesQF 4 in (102 mm)/40 Mk.XIX gunsQF 20 mm (0.79 in) OerlikonHedgehogdepth charge throwersdepth chargesQF 4-inch (101.6 mm) XVI gunsQF 12-pdr 12 cwt (3-inch (76.20 mm)) Mk. V gunQF 4-inch (101.6 mm) Mk.XVI gunsQF 40 mm BoforsSC radarfrigatesanti-submarineconvoyNorth AtlanticAlliedUnited KingdomPercy W. NellesLachine CanalGreat LakesSt. Lawrence RiverUSS AshevilleUSS NatchezbreakwatersHMCS StormontAristotle Onassisluxury yachtChristina OSmith's Dock CompanyBlack Swan-classsloopsreciprocating steam enginesFlower-classcorvettesU-boatsHMCS Valleyfielddepth charge railsTacoma classColony classBay classList of River-class frigatesHMS CamHMCS ChebogueU-1227HMS CuckmereAlgeriaHMS ItchenHMS LaganHMCS MagogU-1223HMS MourneHMS TemeHMS TweedBrisbaneAustraliaHMAS DiamantinaQueensland Maritime MuseumBattle of the AtlanticsuperyachtdaughterSLNS GajabahuHMCS HallowellUBS MayuMyanmarNicholas MonsarratThe Cruel SeaJack Hawkinsfilm versioncorvetteHMS Portchester CastleHMCS New GlasgowJohn WayneThe Sea ChasePrestonian classAlistair MacLeanHMS UlyssesList of Escorteurs of the French NavyList of patrol vessels of the United States NavyColledge, J. J.Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal NavyLenton, H. T.Annan (K297)Annan (K404)BallinderryChelmerCuckmereDeveronEttrickItchenLossieMonnowMourneNadderOdzani