RD18 1940
| Name | No | Builder | Laid down | Launched | Comp | Fate |
| RD1 | Arsenale di Castellamare di Stabia | 2/1916 | 7/5/1916 | 12/1916 | stricken 3/1921 | |
| RD2 | Arsenale di Castellamare di Stabia | 2/1916 | 1/6/1916 | 12/1916 | capsized 16/7/1919 | |
| RD3 | Arsenale di Castellamare di Stabia | 2/1916 | 16/7/1916 | 12/1916 | stricken 3/1921 | |
| RD4 | Arsenale di Castellamare di Stabia | 2/1916 | 27/8/1916 | 1/1917 | sunk 29/1/1943 | |
| RD5 | Arsenale di Castellamare di Stabia | 2/1916 | 17/9/1916 | 2/1917 | stricken 3/1921 | |
| RD6 | Arsenale di Castellamare di Stabia | 3/1916 | 26/10/1916 | 2/1917 | to Yugoslavia 8/1947 (ML301) | |
| RD7 | Tosi, Taranto | 5/1916 | 28/9/1916 | 3/1917 | sunk 15/6/1942 | |
| RD8 | Tosi, Taranto | 6/1916 | 17/12/1916 | 6/1917 | stricken 3/1921 | |
| RD9 | Tosi, Taranto | 9/1916 | 2/2/1917 | 7/1917 | captured by Germany 9/9/1943 (M1226) | |
| RD10 | Tosi, Taranto | 9/1916 | 23/3/1917 | 8/1917 | sunk 29/10/1918 | |
| RD11 | Tosi, Taranto | 11/1916 | 31/5/1917 | 10/1917 | wrecked 1931 | |
| RD12 | Tosi, Taranto | 12/1916 | 2/7/1917 | 10/1917 | sunk 2/5/1943 | |
| RD13 | Poli, Chioggia | 8/1916 | 2/7/1917 | 4/1918 | scuttled 9/9/1943 | |
| RD14 | Poli, Chioggia | 8/1916 | 1917 | --- | capsized incomplete 3/1/1918 | |
| RD15 | Arsenale di Castellamare di Stabia | 7/1916 | 14/12/1916 | 3/1917 | stricken 3/1921 | |
| RD16 | Arsenale di Castellamare di Stabia | 8/1916 | 29/3/1917 | 4/1917 | abandoned 23/7/1943, to Yugoslavia 8/1948 (ML302) | |
| RD17 | Arsenale di Castellamare di Stabia | 9/1916 | 22/4/1917 | 5/1917 | captured by Germany 9/9/1943 (M1227) | |
| RD18 | Arsenale di Castellamare di Stabia | 11/1916 | 17/5/1917 | 5/1917 | sunk 5/5/1943 | |
| RD19 | Arsenale di Castellamare di Stabia | 12/1916 | 10/6/1917 | 6/1917 | stricken 3/1921 | |
| RD20 | Arsenale di Castellamare di Stabia | 2/1917 | 14/7/1917 | 8/1917 | sunk 11/4/1943 | |
| RD21 | Arsenale di Castellamare di Stabia | 7/1917 | 26/11/1917 | 1/1918 | to Yugoslavia 8/1948 (ML303) | |
| RD22 | Arsenale di Castellamare di Stabia | 8/1917 | 31/12/1917 | 2/1918 | sunk 25/10/1943 | |
| RD23 | Arsenale di Castellamare di Stabia | 10/1917 | 21/1/1918 | 2/1918 | sunk 5/5/1943 | |
| RD24 | Arsenale di Castellamare di Stabia | 11/1917 | 4/3/1918 | 3/1918 | capsized 18/2/1943 | |
| RD25 | Arsenale di Castellamare di Stabia | 12/1917 | 4/4/1918 | 5/1918 | abandoned 16/8/1943, to Yugoslavia 8/1948 (ML304) | |
| RD26 | Arsenale di Castellamare di Stabia | 12/1917 | 15/5/1918 | 6/1918 | captured by Germany 9/9/1943 (M1228) | |
| RD27 | Tosi, Taranto | 10/1917 | 16/9/1918 | 10/1918 | to Yugoslavia 8/1948 (ML305) | |
| RD28 | Tosi, Taranto | 12/1917 | 18/7/1918 | 12/1918 | to Yugoslavia 9/1948 (ML306) | |
| RD29 | Tosi, Taranto | 2/1918 | 28/8/1918 | 1/1919 | to Yugoslavia 9/1948 (ML307) | |
| RD30 | Tosi, Taranto | 3/1918 | 22/10/1918 | 2/1919 | sunk 26/12/1942 | |
| RD31 | Arsenale di Castellamare di Stabia | 4/1918 | 30/12/1918 | 1/1919 | sunk 20/1/1943 | |
| RD32 | Arsenale di Castellamare di Stabia | 4/1918 | 8/2/1919 | 2/1919 | discarded 6/1956 | |
| RD33 | Arsenale di Castellamare di Stabia | 6/1918 | 20/3/1919 | 4/1919 | capsized 22/1/1943 | |
| RD34 | Arsenale di Castellamare di Stabia | 12/1918 | 12/5/1919 | 7/1919 | discarded 6/1956 | |
| RD35 | Arsenale di Castellamare di Stabia | 2/1919 | 17/7/1919 | 8/1919 | captured by Germany 13/9/1943 (M1229) | |
| RD36 | Arsenale di Castellamare di Stabia | 3/1919 | 11/8/1919 | 11/1919 | sunk 20/1/1943 | |
| RD37 | Arsenale di Castellamare di Stabia | 5/1919 | 2/10/1919 | 2/1920 | sunk 20/1/1943 | |
| RD38 | Arsenale di Napoli | 5/1919 | 28/8/1919 | 7/1921 | sunk 18/5/1943 | |
| RD39 | Tosi, Taranto | 1/1918 | 27/7/1919 | 11/1919 | sunk 20/1/1943 | |
| RD40 | Tosi, Taranto | 11/1918 | 16/10/1919 | 3/1920 | discarded 4/1955 | |
| RD41 | Tosi, Taranto | 1/1919 | 12/12/1919 | 3/1920 | discarded 1/1953 | |
| RD42 | Tosi, Taranto | 3/1919 | 5/2/1920 | 5/1920 | sunk 5/5/1943 | |
| RD43 | Tosi, Taranto | 6/1919 | 12/4/1920 | 7/1920 | capsized 22/1/1943 | |
| RD44 | Tosi, Taranto | 10/1919 | 6/6/1920 | 10/1920 | sunk 5/5/1943 | |
| RD45 | Pattison, Napoli | 8/1918 | 3/4/1920 | 7/1920 | stricken 11/1921 | |
| RD46 | Pattison, Napoli | 8/1918 | 29/5/1920 | 8/1920 | discarded 3/1923 | |
| RD47 | Pattison, Napoli | 10/1918 | 30/8/1920 | 2/1921 | discarded 3/1923 | |
| RD48 | Pattison, Napoli | 10/1918 | 26/1/1921 | 4/1921 | discarded 3/1923 | |
| RD49 | Pattison, Napoli | 6/1919 | 24/11/1921 | 3/1922 | captured by Germany 9/9/1943 (TR106) | |
| RD50 | Cerusa, Voltri | 12/1917 | 21/6/1919 | 8/1919 | stricken 11/1921 | |
| RD51 | Cerusa, Voltri | 1/1918 | 9/10/1919 | 1/1920 | discarded 2/1922 | |
| RD52 | Cerusa, Voltri | 1/1918 | 9/2/1919 | 3/1920 | stricken 11/1921 | |
| RD53 | CNR, Palermo | 1918 | --- | --- | cancelled 1919 | |
| RD54 | CNR, Palermo | 1918 | --- | --- | cancelled 1919 | |
| RD55 | Migliardi, Savona | 11/1918 | 16/2/1923 | 7/1925 | sunk 25/5/1943 | |
| RD56 | Migliardi, Savona | 11/1918 | 14/3/1923 | 10/1925 | sunk 9/1/1943 | |
| RD57 | Migliardi, Savona | 1/1919 | 6/3/1923 | 11/1926 | sunk 5/5/1943 |
|
Displacement normal, t |
RD1 - 6, 13, 14: 196 RD7 - 12: 216 RD15 - 26: 201 RD27 - 30, 38: 200 RD31 - 37: 207 RD39 - 44: 203 RD45 - 49, 55 - 57: 212 RD50 - 52: 302 |
|
Displacement full, t |
|
|
Length, m |
RD1 - 6, 13 - 20: 35.3 RD7 - 12, 55 - 57: 35.5 RD21 - 37, 39 - 44: 36.5 RD38: 36.0 RD45 - 49: 38.0 RD50 - 52: 34.0 |
|
Breadth, m |
RD1 - 44, 55 - 57: 5.80 RD45 - 49: 6.00 RD50 - 52: 7.20 |
|
Draught, m |
RD1 - 26, 38: 2.10 RD27 - 30: 2.00 RD31 - 37, 39 - 44, 55 - 57: 2.20 RD45 - 49: 1.90 RD50 - 52: 2.50 |
|
No of shafts |
1 |
|
Machinery |
VTE, 1 boiler |
|
Power, h. p. |
RD1 - 6, 13 - 20: 800 RD7 - 12: 1000 RD21 - 26: 880 RD27 - 30: 970 RD31 - 37: 860 RD38: 820 RD39 - 44: 750 RD45 - 49: 810 - 1150 RD50 - 52: 590 RD55 - 57: 870 |
|
Max speed, kts |
RD1 - 6, 13, 14, 21 - 26, 31 - 37: 13 RD7 - 12, 15 - 20, 27 - 30, 39 - 44: 14 RD38: 12 RD45 - 49, 55 - 57: 12.5 RD50 - 52: 10 |
|
Fuel, t |
coal |
|
Endurance, nm(kts) |
RD1 - 6: 630(12) RD7 - 12: 750(14) RD13, 14: 760(12.5) RD15 - 20: 600(12) RD21 - 26: 650(11) RD27 - 20: 760(13) RD31 - 37: 660(10.5) RD38, 55 - 57: 700(11) RD39 - 44: 700(12.5) RD45 - 49: 740(12) RD50 - 52: 620(10) |
|
Armament |
1 x 1 - 76/40 Armstrong 1916 / 1917 or Ansaldo 1916 / 1917, 2 x 1 - 6.5/80, sweeps |
|
Complement |
22 |
Ship project history: Tugs-minesweepers. Suffered from low stability and bad seaworthiness. Wooden hulls.
Modernizations: 1920s, RD7: - 1 x 1 - 76/40; + 1 x 1 - 76/50 Vickers 1909.
Naval service: Incomplete RD14 capsized and sunk 3/1/1918 between Porto Corsini and Ancona under tow for completion. RD11 was sunk by mine 29/10/1918 off Cape Rodoni. RD2 capsized 16/7/1919 off Ancona. RD11 grounded in 1931 near Porto Palo (Sicily). RD7 was sunk 15/6/1942 in Saronic Gulf by mine or submarine torpedo. RD30 was bombed 26/12/1942 at Bizerta by Allied aircraft. RD56 was sunk 9/1/1943 at Bizerta by Allied aircraft, salvaged and again sunk by aircraft 24/3/1943 at the same place. RD31, RD36, RD37 and RD39 were sunk 20/1/1943 off Zuara by British destroyers Kelvin and Javelin. RD33 and RD43 capsized 22/1/1943 in the Gulf of Tunis. RD4 was bombed by Allied aircraft in "The Narrows" 29/1/1943. RD24 capsized 18/2/1943 W of Sicily. RD20 was sunk 11/4/1943 by Allied aircraft at Trapani. RD12 was sunk by Allied aircraft 2/5/1943 off Cape Bon. RD18, RD23, RD42 and RD57 were sunk 5/5/1943 at La Goulette (Tunisia) by Allied bombs. RD44 was sunk 5/5/1943 by Allied aircraft off Bizerta. RD38 was sunk 18/5/1943 at Trapani by Allied aircraft. RD55 was sunk 25/5/1943 off Messina by Allied aircraft. RD16 abandoned 23/7/1943 at Trapani in damaged condition, later repaired and transferred to Yugoslavia in August, 1948 as ML302. RD25 was abandoned 26/8/2943 near Messina, salvaged in 1945 and transferred to Yugoslavia as ML304. RD9, RD17 and RD26 were abandoned 9/9/1943 at Piraeus and captured by Germans. RD13 was scuttled 9/9/1943 at Viareggio. RD49 was captured by Germans 9/9/1943 at La Spezia and scuttled in 1945. RD35 was captured by Germans 13/9/1943 at Syra (Aegean). RD22 was mined off Brindisi 25/10/1943.
RD7 1940
