August 6 2019
How to get a 80' rig of a ketch, under a 65' bridge ? Simply by holding its masts with counterweights, to put his ship on the side.
Video demonstration of a ketch coming up a river in the United States, and confronted with this concern..
Notice that the bags are lift bags usually used for marine salvage, normally filled with air to lift something off the seafloor.
Each one holds one ton of water!