| Stn. | Name | Latitude | Longitude | Depth |
| 1 | Takahama-Higashi | 28˚13'50.4" | 129˚27'27.5" | 4 m |
| 2 | Takahama | 28˚14'00.7" | 129˚27'11.8" | 3 m |
| 3 | Hatonosaki | 28˚13'56.9" | 129˚27'02.5" | 3 m |
| 4 | Tobira | 28˚13'53.2" | 129˚26'46.1" | 4 m |