5-11. The messenger of the watch tells you that the commanding officer wants to be sure that, of all the ships in company, only the ship addressed can read the message. By what means should you transmit the message? 1. Directional flashing light 2. Non-directional flashing light 3. Flaghoist 4. Semaphore 5-12. The message has an immediate precedence and is addressed to several ships. If the addressees are positioned so that they can all be communicated to simultaneously, by what method should you transmit the message? 1. Semaphore 2. Flaghoist 3. Non-directional flashing light 4. Directional flashing light 5-13. What prosign is used to inform a ship that her light is brighter than necessary? 1.  B 2.  C 3. D 4.  F 5-14. When communicating by flashing light, what procedure should you use when the transmitting station waits for a flash for each word or group transmitted? 1. Directional 2. Non-directional 3. Non-directional infrared 4. DSL 5-15. What operating signal is used when you, as the repeating ship, miss a portion of a message you are relaying? 1. QRR 2. QRU 3. E P 4. U I 5-16. You have received a message using non-directional procedure. After checking the message, you are ready to receipt for it. What signal should you send to receipt for the message? 1. R 2. RR 3. RRR 4. RRRR 5-17. What method of communication is being used when the receiving station hoists DESIG? 1. Flaghoist 2. Semaphore 3. Daylight signaling lantern 4. Infrared 5-18. You want to send a flashing light message to a ship well within visual range.    Rather than use a full call, you raised the ship by means of its abbreviated call sign. What does the abbreviated call involve? 1. Abbreviating the call sign of the ship being called 2. Abbreviating your ship’s call sign 3. Omitting the call of the ship being called 4. Omitting your ship’s call sign 5-19. What call sign consists of a single call sign representing more than one station? 1. Full call 2. Multiple call 3. Collective call 4. Abbreviated call 5-20. When abbreviated calls are used, it is assumed that the message is addressed to which officer? 1. The senior officer embarked 2. The commanding officer 3. The officer of the deck 4. The executive officer 5-21. When more than one station is being called in the same direction or during low visibility, how does the answering station indicate its identity? 1. By transmitting its call sign followed by the prosign K 2. By transmitting the prosign DE followed by a call sign and the prosign K 3. By transmitting the prosign K followed by its call sign 4. By transmitting its call sign 30