Question 308Navigation General70% to pass
In the IALA Buoyage System, what are buoys with alternating red and green horizontal bands used to indicate?
AI Explanation
The correct answer is D) the preferred channel.
In the IALA Buoyage System, buoys with alternating red and green horizontal bands are used to indicate the preferred or safe channel. These buoys mark the center of a navigable channel, and vessels should pass between them. The alternating color bands help mariners visually identify the preferred route to follow.
The other options are incorrect because: A) fishing areas are not marked this way, B) isolated dangers are marked with single color buoys, and C) spoil grounds are not typically marked with special buoy types.
Related Questions
#306 What indicates a buoy that should be left to port when entering from seaward? (U.S. Aids to Navigation System) #307 Buoys are marked with reflective material to assist in their detection by searchlight. Which statement is TRUE? #309 Safe water buoys may show ONLY _______________.#310 In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to- starboard buoys, when fitted with lights, will show a _______________.#311 Of the four light characteristics shown in illustration D019NG below which one does NOT represent a safe water mark of the IALA Buoyage System?