Project 611
| Type |
SS |
| Soviet designation |
PL |
| NATO reporting name |
Zulu II |
| Country |
USSR |
| Displacement (t) |
2,387 |
| Length (m) |
90.5 |
| Beam (m) |
7.5 |
| Draft (m) |
5.0 |
| Height (m) |
12.0 |
| Max speed submerged (kn) |
16.0 |
| Max speed surfaced (kn) |
18.0 |
| Max safe depth (m) |
170 |
| Endurance (days) |
75 |
| Diesel-electric |
Yes |
| Titanium hull |
No |
| Class year |
1955 |
Individual hulls (21)
| Name |
Short name |
Country |
Commissioned |
Decommissioned |
Remark |
| B-61 |
B-61 |
USSR |
1953-12-31 |
1980-06-22 |
|
| B-62 |
B-62 |
USSR |
1953-12-31 |
1996-01-29 |
|
| B-63 |
B-63 |
USSR |
1954-06-30 |
1985-01-05 |
|
| B-64 |
B-64 |
USSR |
1954-12-30 |
1956-07-01 |
|
| B-65 |
B-65 |
USSR |
1954-12-06 |
1981-06-29 |
|
| B-66 |
B-66 |
USSR |
1954-12-29 |
1983-08-07 |
|
| B-68 |
B-68 |
USSR |
1955-11-27 |
1972-07-25 |
|
| B-69 |
B-69 |
USSR |
1955-12-31 |
1964-09-15 |
|
| B-70 |
B-70 |
USSR |
1956-06-29 |
1978-04-19 |
|
| B-71 |
B-72 |
USSR |
1956-09-30 |
1963-03-21 |
|
| B-72 |
B-72 |
USSR |
1956-06-30 |
1985-12-08 |
|
| B-74 |
B-74 |
USSR |
1956-10-31 |
1980-06-22 |
|
| B-75 |
B-75 |
USSR |
1956-11-06 |
1988-07-17 |
|
| B-76 |
B-76 |
USSR |
1956-11-28 |
1978-04-19 |
|
| B-77 |
B-77 |
USSR |
1956-11-30 |
1976-06-21 |
|
| B-80 |
B-80 |
USSR |
1957-07-13 |
1980-06-22 |
|
| B-81 |
B-81 |
USSR |
1957-07-13 |
1981-04-25 |
|
| B-82 |
B-82 |
USSR |
1957-08-17 |
1964-07-18 |
|
| B-88 |
B-88 |
USSR |
1957-09-25 |
1981-06-29 |
|
| B-90 |
B-90 |
USSR |
1957-10-30 |
1983-06-07 |
|
| B-91 |
B-91 |
USSR |
1958-07-15 |
1964-09-15 |
|