| 1982-01-20 08 | 1983-04-01 16 | Datawell non-directional buoy | WV67682 | - | 37 34.000' | 122 53.000' |
| 1983-04-01 20 | 1984-11-30 17 | Datawell non-directional buoy | WV67537 | - | 37 34.000' | 122 53.000' |
| 1984-11-30 19 | 1985-12-13 16 | Datawell non-directional buoy | WV67537 | - | 37 34.000' | 122 53.000' |
| 1986-02-08 04 | 1987-06-09 08 | Datawell non-directional buoy | ADAMO | - | 37 34.000' | 122 53.000' |
| 1987-07-19 18 | 1989-12-10 07 | Datawell non-directional buoy | WV679889 | - | 37 34.100' | 122 53.400' |
| 1990-02-13 14 | 1992-02-28 08 | Datawell non-directional buoy | WV676819 | - | 37 30.300' | 122 52.400' |
| 1992-03-23 16 | 1992-08-01 00 | Datawell non-directional buoy | WV676829 | - | 37 30.200' | 122 53.400' |
| 1992-11-23 23 | 1994-10-12 07 | Datawell non-directional buoy | WV676819 | - | 37 30.300' | 122 52.400' |
| 1994-11-21 14 | 1995-10-19 02 | Datawell non-directional buoy | WV684769 | - | 37 30.300' | 122 52.400' |
