come right
sound the danger signal
continue on your course
come left
单选题A towing vessel 30 meters in length is pushing barges ahead. How many white masthead lights is the vessel REQUIRED to show at night?（）A OneB TwoC ThreeD Four
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单选题At sea，on what occasion would you display two red lights at night or two black balls during the day?（）.A When vessel is on fireB When vessel is not under commandC When vessel is carrying the dangerous cargoesD When vessel is restricted in her ability to maneuver
单选题You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.A The vessel must carry only the lights that comply with the rules; the others may be omittedB The vessel's lights must comply as closely as possible，as determined by her governmentC The vessel must be altered to permit full compliance with the rulesD An all-round light should be substituted for the after masthead light and the stern light
单选题You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.A Your speed must be reduced to bare steeragewayB A look-out is not required if the radar is onC Fog signals are only required when a vessel is detected by radarD The radar should always be kept on a short-range scale
单选题At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.A in distressB approaching a bend in the channelC operating astern propulsionD intending to overtake another vessel
单选题Underway at night，a vessel displaying the lights shown is（）.A Engaged in fishingB Mine sweepingC A pilot boatD Under sail
单选题At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.A red lightsB red lights and two white lightsC red lights with a white light in betweenD white lights with a red light in between
