| Opened | 1898 | Arita - Imari | Re-gauged | 1943 - 1945 | Yoshii - Kita-Sasebo |
| 1930 - 1944 | Imari - Yoshii | Owner change | 1988 | JR > Matsuura Railway | |
| 1920 - 1933 | Yoshii - Hidariishi (- Ex Kami-Sasebo) 762 mm lines | Tracks | Single track | ||
| 1943 | Hidariishi - Kita-Sasebo | ||||
| 1935 | Kita-Sasebo - Sasebo |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Arita | JR Kyūshū: Sasebo | 0.0 | Arita-machi | Saga |
| Map | Map | Imari | JR Kyūshū: Chikuhi (Yamamoto - Imari) | 13.0 | Imari-shi | |
| Map | Map | Matsuura | | 35.6 | Matsuura-shi | Nagasaki |
| Map | Map | Tabira-Hiradoguchi | | 51.2 | Hirado-shi | |
| Map | Map | Yoshii | | 68.8 | Sasebo-shi | |
| Map | Map | Saza | | 74.0 | Saza-chō | |
| Map | Map | Hidariishi | | 87.4 | Sasebo-shi | |
| Map | Map | Kita-Sasebo | | 90.6 | Sasebo-shi | |
| Map | Map | Sasebo | JR Kyūshū: Sasebo, JR Kyūshū: Ōmura | 93.8 | Sasebo-shi |
| Type | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|
| Rapid Kaisoku 快速 | Tabira-Hiradoguchi - Sasebo | 1 | 1h22 | 31 km/h |
| Saza - Sasebo | 3 | 35 min | 34 km/h | |
| Local Futsū 普通 | Arita - Imari | 26 | 23 min | 34 km/h |
| Imari - Sasebo | 16 | 2h26 | 33 km/h | |
| Imari - Tabira-Hiradoguchi | 1 | 1h05 | 35 km/h | |
| Imari - Matsuura | 2 | 37 min | 37 km/h | |
| Matsuura - Sasebo | 1 | 1h56 | 30 km/h | |
| Tabira-Hiradoguchi - Sasebo | 5 | 1h19 | 32 km/h | |
| Saza - Sasebo - JR - Haiki | 1 | 1h09 | 25 km/h | |
| Saza - Sasebo | 15 | 37 min | 32 km/h |