Ramark Beacon program sponsored by U S Coast Guard; use of radar on Mississippi enables barge and towboat operation in fog; Sperry DERM (delayed echo radar marker) equipment, mounted on bridge pier, enables pilot to locate piers and pass tow safely between; use of automatic pilot to prevent dangerous swing of barges; identification of particular vessels on radar screen.
Radar and related navigation aids on rivers
Motorship
Motorship ; 36 , n 9
1951
Article (Journal)
English
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