Ribeira Grande 1970
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| São Roque | M401 | CUF, Lisboa | 9/1954 | 6/1956 | discarded 1992 | ||
| Ribeira Grande | M402 | CUF, Lisboa | 9/1954 | 2/1957 | auxiliary 1992 | ||
| Lagoa | M403 | CUF, Lisboa | 9/1954 | 8/1956 | discarded 1992 | ||
| Rosário | M404 | CUF, Lisboa | 9/1954 | 2/1956 | discarded 1992 |
|
Displacement standard, t |
394 |
|
Displacement full, t |
452 |
|
Length, m |
42.7 pp 46.3 oa |
|
Breadth, m |
8.50 |
|
Draught, m |
2.50 max |
|
No of shafts |
2 |
|
Machinery |
2 Mirrlees JVSS-12 diesels |
|
Power, h. p. |
2500 |
|
Max speed, kts |
15 |
|
Fuel, t |
diesel oil 45 |
| Endurance, nm(kts) | 2400(12) |
|
Armament |
1 x 1 - 40/60 Mk 7, 1 x 2 - 20/70 Mk 9, LL mechanical/magnetic/acoustic minesweeping gear |
|
Electronic equipment |
type 978 radar |
|
Complement |
29 |
Project history: RN 'Ton' class, M401 and M403 built under MDAP and M402 and M404 were paid for by Portugal.
Modernizations: 1972, all as patrol craft: - 1 x 1 - 40/60, minesweeping gear
Naval service: No significant events.
Ribeira Grande 1979
© Ivan Gogin, 2015