W-1-class minesweeper
W-3 in 1923 | |
| Class overview | |
|---|---|
| Name | W-1-class minesweeper |
| Builders | |
| Operators | Imperial Japanese Navy |
| Succeeded by | W-13 class |
| Subclasses |
|
| Cost | 700,000 JPY (in 1920) |
| Built | 1922–1929 |
| In commission | 1923–1946 |
| Planned | 6 |
| Completed | 6 |
| Lost | 5 |
| Scrapped | 1 |
| General characteristics W-1-class | |
| Type | Minesweeper |
| Displacement | 600 long tons (610 t) standard |
| Length | 76.20 m (250 ft 0 in) overall |
| Beam | 8.03 m (26 ft 4 in) |
| Draught | 2.29 m (7 ft 6 in) |
| Installed power | |
| Propulsion | 2 shafts, 2 × triple-expansion steam engines |
| Speed | 20.0 knots (37.0 km/h; 23.0 mph) |
| Range | 2,000 nmi (3,700 km; 2,300 mi) at 10 knots (19 km/h; 12 mph) |
| Complement | 97 |
| Armament |
|
| General characteristics W-5-class (differences only) | |
| Displacement | 620 long tons (630 t) standard |
| Length | 77.00 m (252 ft 7 in) overall |
| Beam | 8.25 m (27 ft 1 in) |
| Draught | 2.25 m (7 ft 5 in) |
| Complement | 91 |
| Armament | 2 × paravanes or 50 × Mk.5 naval mines |
The W1 class minesweeper (第一号型掃海艇,, Dai Ichi Gō-gata Sōkaitei) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during the 1930s and World War II. 6 vessels were built in 1922–29 under the Eight-eight fleet plan. They have two sub-classes, this article handles them collectively.