1
Japan Ship Exporter's Association
1
Japan Ship Exporter's Association
1
Japan Ship Exporters' Association
1
Japan Ship Exporters' Association
1
vessel;ship;shipping;seacraft
懐中電灯は、船舶同士とか、街の通りを走っている自動車に向けて合図を伝える。
Flashing lights transmit messages between ships and to motorists along city streets.