Initially, we planned to depart and arrive at the Nihonbashi River and Shin-Misaki Bridge Disaster Prevention Pier, but the tide level on the day was low, so it was changed to departure and arrival at the Ichibei Riverside Disaster Prevention Pier as described above to avoid dangers when getting on and off.
The operating entity was called the NPO "Environment and Science Club", and the ship used was a small battery-powered "environmentally friendly" electric boat with a capacity of 12 people.
The captain's guide was simple and important, and not only historical heritage such as the stone wall of the outer moat of Edo Castle and the traces of the tributaries that disappeared, but the difference between the tide level on the Nihonbashi River reached a maximum of 2 meters, and the usual transparency is more than 2 meters, but when it rains, it fell to about 30 cm due to the effects of the combined sewer system, and efforts to purify the water quality using microorganisms.
However, of the 24 bridges that span the Nihonbashi River, only two bridges, Minato Bridge and Toyomi Bridge, which are not covered by the Metropolitan Expressway, were reaffirmed, and I felt a strong resentment.
The promoter of this tour was "Pakekaru Club" (03-5652-7072).
