Flotilla Navigation Study Guide Chapter 9: Radionavigation Instructor: Fred Williston All Questions are important for exam PowerPoint Presentation by Forrest Meiere

Flotilla Navigation Study Guide an onboard navigation receiver a chain of three to five land-based transmitting stations. S9-2. The components of the Loran-C system include ___________________________ and _______________ S9-1. The absolute accuracy of Loran-C is between ___ and ____ nautical miles

Flotilla Navigation Study Guide S9-3. Using Loran-C, position is determined as the intersection of _______________________________ two or more lines of position based on the TDs. S9-4. Loran-C LOPs are not printed on most harbor charts because _________________________________________ the corrections for signal propagation are more complex and variable for near shore areas than for outlying areas. Consequently, the possible errors may be larger.

Flotilla Navigation Study Guide S9-6. The principle of operation of GP5 is based on satellite ________. S9-5. The Global Positioning System (GP5) consists of three segments: _____________, ______________ and ____________. space segment control segment user segment ranging

Flotilla Navigation Study Guide S9-7. Historically, GPS provided two levels of service: the __________________________ and the ________ _________________. Standard Positioning Service Precise Positioning Service S9-8. The stated accuracy of the GPS under S/A (95% of the time) is _____________________. 100 meters horizontally

Flotilla Navigation Study Guide S9-9. A system of improved accuracy based upon additional corrections to GP5 is termed _______________. The horizontal accuracy of this system is approximately _________. S9-10. To ensure best accuracy for GPS receivers it is important to set the _______________ to the same as that used on the nautical chart. horizontal datum Differential GPS 10 meters

Flotilla Navigation Study Guide the closest distance of the aircraft or vessel to its intended track S9-11. A waypoint is an imaginary point that can be ______ in the navigation receiver. stored S9-12. The cross-track error is defined as __________ _____________________________________________.

Flotilla Navigation Study Guide S9-13. An arrival alarm warns the mariner when __________________________________________ S9-14. The modem radar display screen is known as a ____________________. Plan Position Indicator the vessel or aircraft passes within a user-defined distance of a destination waypoint.

Flotilla Navigation Study Guide S9-16. Rule 7 of the NA VRULE5 states that " ______ use shall be made of radar equipment if fitted and operational, including long-range scanning to obtain early warning of risk of collision and _____________ or equivalent systematic observation of detected objects." Proper S9-15. The two principal uses for radar aboard ships are __________ and __________________. Navigation Collision Avoidance radar plotting

Flotilla Navigation Study Guide S9-18. To increase the accuracy of range estimates, most radar units are also equipped with one or more ________ _____________. variable range markers S9-17. Two major radar display types are: ______________ and _________. Ship’s head up North up

Flotilla Navigation Study Guide S9-20. A CBDR target is one that exhibits ________ _______ and ________________ presents a risk of collision. constant bearing decreasing range S9-19. To increase the accuracy with which relative bearings can be read, most modem radar units have one or more ___________________________________ electronic bearing markers or electronic bearing lines.

Flotilla Navigation Study Guide direction of relative motion closest point of approach time to the closest point of approach. S9-21. CPA stands for the ______________________ and provides a possible indication of collision risk. S9-22. The relative motion plot is used to determine the following quantities: _________________________. _____________________ and ____________________ closest point of approach

Flotilla Navigation Study Guide Automatic Radar Plotting Aid. S9-23. The vector diagram is used to determine the target's ______ and _____. S9-25. ARPA is an acronym for ________________ End of Questions course speed