| (Hayo) | |
| Displacement | 4600t trial |
|---|---|
| Length | 87.7m pp |
| Width | 13.1m |
| Draught | ?m |
| Machinery | 2-shaft recipro, 6500ihp |
| Speed | 15kt |
| Armament | 1-8cm/40cal gun |
| Complement | ? |
| (Hakusa) | |
| Displacement | 6799t trial |
| Length | 112.7m pp |
| Width | 15.6m |
| Draught | 3.7m |
| Machinery | 1-shaft recipro, 1830ihp |
| Speed | 11.4kt |
| Armament | 2-8cm/40cal AA gun |
| Complement | ? |
| (Choyo) | |
| Displacement | 1320t trial |
| Length | 68.9m pp |
| Width | 9.75m |
| Draught | 3.35m |
| Machinery | 2-shaft diesel, 700bhp |
| Fuel | oil 194t |
| Speed | 10kt |
| Armament | 1-AA gun, DCs |
| Complement | 104 |
| (Heiyo) | |
| Displacement | 1320t standard |
| Length | 81.5m pp |
| Width | 10.7m |
| Draught | 3.65m |
| Machinery | 1-shaft recipro, 4 boilers, 2500ihp |
| Fuel | coal 260t |
| Speed | 17kt |
| Range | 2600nm by 12kt |
| Armament | 1-8cm/40cal AA gun, 2-7.7mm MGs, DCs |
| Complement | 133 |
| (Hoyo) | |
| Displacement | 1012t trial |
| Length | 55.6m pp |
| Width | 9.5m |
| Draught | 3.0m |
| Machinery | 1-shaft recipro, 2 boilers, 550ihp |
| Speed | 12kt |
| Armament | AAs |
| Complement | approx. 50 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| Hayo | - | UK Scott | ? | 1891 | ? | UK SS Poyang | 1937 captured 1940. 3.15 T-SV (Hayo) unknown later |
| Hakusa | - | UK W.Gray | ? | 1914 | ? | Chi Fu Hsing | 1937 captured 1938. 2.20 T-SV (Hakusa) 1944. 9.25 T-RS 1945. 3.10 T-TP 1945. 6. 8 sunk (torpedoed, off French Indochina) [08.56N, 105.37E] |
| Choyo | - | Net Soerabaya DYd | ? | 1916. 6.24 | ? | Net Tydeman | 1942. 3. 4 sunk 1942 captured 1944. 3.25 T-SV (Choyo) 1945. 8 to Net 1946. 4.24 scuttled |
| Heiyo | - | UK Blyth SB | ? | 1918.12.19 | ? | UK RNS Merry Hampton | 1923 SV (Herald) 1942. 2 scuttled, captured 1943.10.10 named (Heiyo-Maru) 1944.11.14 renamed (Heiyo) 1944.11.14 sunk (mined, Java sea) |
| Hoyo | - | Net Vershure | ? | 1922. 8.15 | ? | Net Pollux | 1942. 3. 2 sunk 1942. 3 captured 1943. 2.13 named (Horai-Maru) 1944. 6.20 renamed (Hoyo) 1945. 8 to Net, BU |