Submarines of the RO-60 type ( Japanese 呂 六 〇 型 潜水 艦 ), also known as the L4 type, are a series of Japanese diesel-electric submarines of the Second World War period. Created in the early 1920s on the basis of RO-57 and were intended to fulfill coastal defense tasks, featuring a reduced range and autonomy of navigation. From 1921 to 1927, 9 submarines of this type were built at the Mitsubishi shipyards in Kobe, two more were canceled in 1921, before they could begin. Submarines of the RO-60 type were used in battles at the initial stage of World War II , but from the end of 1942, the surviving representatives of this type were used only as training ones.
| Submarines type RO-60 | |
|---|---|
| 呂 六 〇 型 潜水 艦 | |
 RO-64 | |
| Main characteristics | |
| Type of ship | DEPL |
| Speed (surface) | 16 knots |
| Speed (underwater) | 8 knots |
| Working depth | 60 m |
| Autonomy of swimming | 20 days, 10,200 km at 10 knots , 150 km underwater |
| Crew | 60 people |
| Dimensions | |
| Surface displacement | 988 t standard 1,060 t full |
| Underwater displacement | 1,322 t |
| The length is the greatest (on design basis) | 76.2 m |
| The width of the body naib. | 7.3 m |
| Average draft (on design basis) | 3,7 m |
| Power point | |
| diesel electric 2 diesel engines , 2,400 hp electric motors , 1,600 hp, 2 propeller shafts | |
| Armament | |
| Artillery | 1 × 76 mm 1 machine gun |
| Torpedo mine weapons | 6 bow 533 mm TA , 10 torpedoes |
Representatives
| Factory number | Bookmark Date | Launching | Commissioning | Fate |
|---|---|---|---|---|
| Number 59 since 1924 RO-60 | December 1921 | May 22, 1922 | September 17, 1923 | ran aground at Kwajalein Atoll , December 29, 1941 , later scrapped |
| Number 72 since 1924 RO-61 | May 19, 1923 | February 9, 1924 | sunk by destroyer "Raid" and aircraft at the Aleutian Islands , August 31, 1942 | |
| Number 73 since 1924 RO-62 | September 10, 1923 | July 24, 1924 | surrendered in August 1945 , flooded in April 1946 | |
| Number 84 since 1924 RO-63 | January 24, 1924 | December 20, 1924 | surrendered in August 1945 , flooded in April 1946 | |
| RO-64 | August 19, 1924 | April 30, 1925 | hit a mine in Hiroshima Bay , April 12, 1945 | |
| RO-65 | September 25, 1925 | June 30, 1926 | sunk by planes near the Aleutian Islands , November 4, 1942 | |
| RO-66 | October 25, 1926 | July 28, 1927 | drowned on collision with RO-62 At Wake Atoll, December 17, 1941 | |
| RO-67 | March 18, 1926 | December 15, 1926 | surrendered in August 1945 , flooded in April 1946 | |
| RO-68 | February 23, 1925 | October 29, 1925 | surrendered in August 1945 , flooded in April 1946 |
Literature
- N. Polmar, D. Carpenter. Submarines of the Imperial Japanese Navy 1904-1945. - Conway Maritime Press, 1986. - ISBN 0-85177-396-6 .