3 janv. 1829 - First Snagboat invented.

Description:

These boats patrolled the rivers and removed snags so other boats would not hit them and sink. A snag is a sunken tree, stump, or boat wreck that could cause damage to a ship if hit.

http://www.usace.army.mil/About/History/Historical-Vignettes/Civil-Engineering/120-Snagboats/

Ajouté au bande de temps:

Date:

Les images: