Question 380Navigation General70% to pass
The lock chamber is 600 feet X 110 feet. Your towboat is 150 feet X 35 feet. Which of these tows will require a double lockage?
AI Explanation
The correct answer is D) 9 jumbo barges.
The dimensions of the lock chamber (600 feet x 110 feet) are not large enough to accommodate the combined size of the towboat (150 feet x 35 feet) and 9 jumbo barges, which would require a total width of 105 feet (3 abreast) and a total length of 450 feet (9 barges). This would exceed the lock chamber's dimensions, necessitating a double lockage.
The other options, such as a set-over single, 4 standard barges, or 6 jumbo barges, would all fit within the lock chamber's dimensions and could be locked through in a single pass.
Related Questions
#378 You are sailing south on the Intracoastal Waterway (ICW) when you sight a red nun buoy with a yellow square painted on it. Which statement is TRUE? #379 Aids to navigation marking the intra-coastal waterway can be identified by _______________.#381 You are approaching a swing bridge at night. You will know that the bridge is open for river traffic when _______________.#382 Illustration D036NG below represents a fixed C of E lock and dam. What navigational light(s) is(are) exhibited at the position indicated by the letter D? #383 Illustration D037NG below represents a movable dam. If there is high water and the wickets are down so that there is an unobstructed navigable pass through the dam, what light(s) will be shown at D if the lock walls and piers are not awash?