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| Riga-class frigate ： ウィキペディア英語版 |
Riga-class frigate
The Riga class was the NATO reporting name for class of frigates built for the Soviet Navy in the 1950s. The Soviet designation for these ships was ''Storozhevoi Korabl'' (escort ship) ''Project 50 Gornostay'' (''Ermine stoat''). The Riga class was analogous to World War II era destroyer escorts.
==Design==
These ships were a smaller and simpler version of the . According to Conway's, this simpler group of ships were ordered by Joseph Stalin who was concerned about the cost of large ships. The class introduced high pressure steam turbines and new radars into Soviet service. The bridge gun turrets and magazines were covered in -thick armour. The main armament comprised three single dual-purpose guns with remote power control and a single ''Yakor'' type fire control director. The machinery comprised two TV-9 steam turbines with two boilers and had initial problems with reliability.
There was a modernisation programme designated Project 50 A in the late 1950s early 1960s. This included fitting anti-submarine rocket launchers (RBU-2500) new radar and adding permanent ballast for improved stability.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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