3 янв 1829 г. - First Snagboat invented.
Описание:
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/
Добавлено на ленту времени:
Дата:
Изображения: