The Captain Kano concluded that this was the product of a submarine eruption and diverted its course from east towards Ishigaki Island to north-northeast.

At 11:05 a.m., due to poor visibility from worsening weather, the ship returned to Nakara Port on Iriomote Island, from where it had departed.

[2] Immediately after returning to port, the Captain Kano reported to the incident to Okinawa authorities, the nearby weather station, and Osaka Merchant Marine by telegram.

Local knowledge of a destructive tsunami affecting the Sakishima Islands in 1771 was a factor that contributed to the chaos.

[4] The harbour on Iriomote Island, close to the eruption, was covered in a layer of pumice and ash which lasted for three months.

[7] The distribution of pumice provided information for ocean currents research due to its sparse understanding at the time.