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Russian Navy

Project 641B Tango class

The Tango class submarine was designed to engage enemy surface forces and submarines and to protect friendly convoys. The Tango has a more streamlined hull than the prior Foxtrot class, making the Tango more suitable for submerged operations. The Tango also has a greater battery storage capacity and more advanced electronic systems than the Foxtrot. The Tango’s six 533 mm torpedo tubes can also be used to deploy mines. It was equipped with a new sonar system fitted with a large passive array, a storage battery of a larger capacity, powerful torpedo armament, including quick-loading gear, automatic fire control system and other improvements. But actually, it was no more than an improved version of the diesel submarine of Project 641.

Most units of this class were retired starting in 1995. As of early 2000 perhaps four units were thought to in the Northern Fleet, though largely inoperable, with another six units believed remain in reserve though unlikely to be returned to service. The status of specific units is conjectural.

Specifications

Designation: 641.B (Tango)
Designer:  
Builder  
Displacement (tons): 2,770 surfaced
4,600 submerged
Speed (kts): 15 knots dived
13 kts surfaced
Dimensions (m): 90.2 meters long 8.6 meters beam 5.7 meters draft
Propulsion: 3 middle shaft diesels – 2,700 (shp)
2 side shaft propulsion motors – 1,350 (shp)
Propulsion: 3 5-bladed propeller
Diving depth: 240 meters operational
300 meters maximum
Crew: 78 total
Armament: · 6 – 533 mm tubes
(24 torpedoes)
Electronics · General purpose
Active/Passive radar
· Active/passive sonar
2 periscopes

Class Listing

UnitShipyardFleetChronologyNotes
#numberName Laid Down Launched Comm. Stricken
1B-380 Gorkovsky Komsomolets SY 112---------- ---------- 19721995lead ship
07/1973 delivered to Sevastpol
1992-94 refit
2B-30 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
3B-97 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
4B-146 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
5B-215 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
6B-225 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
7B-290 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
8B-303 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
9B-307 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
10B-312 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
11B-319 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
12B-386 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
13B-443 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
14B-474 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
15B-498 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
16B-504 SY 112---------- ---------- 1972-82 ---------- -1998 in reserve
17B-515 SY 112NOR---------- ---------- 1972-82 ----------
18B-519 SY 112NOR---------- ---------- 1972-82 ----------
19B-546 SY 112NOR---------- ---------- 1972-82 ----------
20 SY 112NOR---------- ---------- 1972-82 ----------





Sources and Resources



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