Full name: Jacob Carl Gustaf Herman Björnström
Gender: Male
Born: December 14, 1881 in Vysotsk, Leningrad, Russia
Died: July 17, 1935 in Inari, Lappi, Finland
Affiliations: Wiborgs Läns Segelförening, Vyborg (RUS)
Country:
Finland
Sport: Sailing
Medals: 1 Silver (1 Total)
| Games | Age | City | Sport | Event | Team | NOC | Rank | Medal | |
|---|---|---|---|---|---|---|---|---|---|
| 1912 Summer | 30 | Stockholm | Sailing | Mixed 10 metres | Nina | FIN | 2 | Silver |
| Games | Age | City | Sport | Team | NOC | Phase | Unit | Date | PTS | T |
|---|---|---|---|---|---|---|---|---|---|---|
| 1912 Summer | 30 | Stockholm | Sailing | Nina | FIN | Final Standings | 1912-07-20 | 4 | ||
| 1912 Summer | 30 | Stockholm | Sailing | Nina | FIN | Race One | 1912-07-20 | 3-59:07 | ||
| 1912 Summer | 30 | Stockholm | Sailing | Nina | FIN | Race Two | 1912-07-21 | 3-50:09 | ||
| 1912 Summer | 30 | Stockholm | Sailing | Nina | FIN | Match Race for 2/3 | 1912-07-22 | 4-21:41 |