Project 644
| Type |
SSG |
| Soviet designation |
PLRK |
| NATO reporting name |
Whiskey Twin Cylinder |
| Country |
USSR |
| Displacement (t) |
1,350 |
| Length (m) |
76.0 |
| Beam (m) |
6.3 |
| Draft (m) |
5.0 |
| Height (m) |
6.3 |
| Max speed submerged (kn) |
11.5 |
| Max speed surfaced (kn) |
17.5 |
| Max safe depth (m) |
200 |
| Endurance (days) |
45 |
| Diesel-electric |
Yes |
| Titanium hull |
No |
| Class year |
1955 |
Individual hulls (6)
| Name |
Short name |
Country |
Commissioned |
Decommissioned |
Remark |
| S-158 |
S-158 |
USSR |
1960-08-31 |
1982-07-22 |
|
| S-162 |
S-162 |
USSR |
1962-07-24 |
1982-07-22 |
|
| S-44 |
S-44 |
USSR |
1960-07-12 |
1977-07-18 |
|
| S-46 |
S-46 |
USSR |
1960-09-19 |
1977-06-28 |
|
| S-69 |
S-69 |
USSR |
1960-09-21 |
1990-04-19 |
|
| S-80 |
S-80 |
USSR |
1960-01-15 |
1960-01-27 |
|