Painting showing Philipp Franz von Siebold with a telescope (teresukoppu), Dutch personnel and Siebolds Japanese wife Kusumoto Otaki with their baby-daughter Kusumoto Ine watching an incoming Dutch sailing ship at Dejima. The ship is towed by many stringed rowing boats. c.1811 - 1842, years of Kawahara Keiga's employment for Dejima.
Image taken from MIT Visualizing Cultures.