Question 54 ONC04 - Mate of LT 500-1600 GRT

The Correct Answer is A. The visual signal consisting of the code letter "E" (Echo), when displayed by an icebreaker assisting a vessel through an ice field, indicates: **"I am altering my course to starboard."** This meaning is derived from the standardized signals used specifically for ice navigation and icebreaking operations, often codified in international or national regulations/practices (like those established by the International Association of Marine Aids to Navigation and Lighthouse Authorities - IALA, or specialized national guidelines). The single flag hoist (or light/sound signal) corresponding to "E" is designated for this specific maneuver in an ice convoy context. ### Why Options B, C, and D are Incorrect: **B) I am altering my course to port:** This maneuver is typically signaled by the code letter "I" (India) in ice operations. Therefore, B is incorrect. **C) My vessel is stopped and making no way through the water:** The code letter "S" (Sierra) is commonly used to indicate a stop or making no way through the water. Therefore, C is incorrect. **D) I am operating astern propulsion:** The code letter "D" (Delta) or sometimes specific sound signals are used for astern propulsion or maintaining station. Therefore, D is incorrect.