Navigation ESWS

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  1. a. Golf
    CONTROL SHIP – This ship is Guide
  2. b. Romeo at the dip
    • CONTROL SHIP – I am steady on course and speed and am preparing to receive you on side which this flag is hoisted.
    • APPROACH SHIP – I am ready to come alongside.
  3. c. Romeo close up
    • CONTROL SHIP – I am ready for your approach.
    • APPROACH SHIP – I am commencing approach.
  4. d. Romeo hauled down
    BOTH SHIPS – When messenger is in hand.
  5. e. Prep at the dip
    BOTH SHIPS - Expect to disengage in 15 minutes.
  6. f. Prep close up
    BOTH SHIPS - Replenishment completed; I am disengaging at final station.
  7. g. Prep hauled down
    BOTH SHIPS - All lines are clear.
  8. h. Bravo at the dip
    BOTH SHIPS – Have temporarily stopped supplying.
  9. i. Bravo close up
    BOTH SHIPS – Fuel, explosives, or inflammable materials are being transferred.
  10. j. Bravo hauled down
    BOTH SHIPS – Delivery is completed.
  11. a. Life ring/buoy
    It is constructed of an inherently buoyant material that is formed into a doughnut shape. Line is added on the perimeter of the lifering to give survivors additional handholds. For high-visibility day usage, the ring is painted orange. For low-visibility and night usage, chemical lights are attached to the lifering. At least 100 feet of 3/8-inch circumference propylene line shall be attached to the lifering so that it may be retrieved.
  12. b. Smoke float
    The device is designed for day and night use in any condition calling for a long burning smoke and a 45-minute reference point on the ocean surface and the position of survivors.
  13. c. Strobe light
    This is a droppable light that provides a visual reference to a survivor’s position in the ocean. The advantage of these lights is that they can be used in fuel spills with no danger of fuel ignition, and are better hover references for pilots because of the softer light source. In most cases the light does not interfere with night vision.
  14. d. Digital Dead Reckoning Tracer (DDRT)/Computer Assisted Dead Reckoning Tracer (CADRT)
    It uses ship’s gyrocompass to show a geoplot. Gives geo real picture, as opposed to SPA25/50 which is a relative picture. Dead Recking (DR) –process of determining the position of a object at any instant by applying to the last determined position the run has since been made.
  15. e. Man Overboard Indicator (MOBI) System
    This system consists of a small transmitter attached to the float coat; a bridge receiver the size of an answering machine and connected to a whip antenna mounted on the top of the ship’s superstructure; and a direction finder. The bridge-mounted direction finder shows the signal’s relative bearing. There are also portable direction finders in each of the ship’s rigid hull inflatable (RHIBs) so that boat teams can track the signal once they are off the ship.
  16. 105.22 State the three types of “man-overboard” recovery.
    Ship recovery, Boat recovery, Helo recovery
  17. a. Collision
    An act or instance of colliding. The alarm is sounded, then the word is pass, “Collision, Collision on (what ever side). All hands brace for shock." Then repeat.
  18. b. Aground
    When any part of a ship is resting on or is in contact with bottom. Day shape-3balls (ball over ball over ball), lights-2 red lights, (red over red).
  19. a. Advance/transfer
    • Advance – Is the amount of distance run on the original course until the ship steadies on the new course. Advance is measured from the point where the rudder is first put over.
    • Transfer – Is the amount of distance gained towards the new course.
  20. b. Pivot point
    A ship’s pivot point is nearly always located about one-third the ship’s length from her bow when moving ahead (BLR FR 64), and at or near her stern when moving astern. The location of the pivot point will vary with ship’s speed. An increase in speed will shift the pivot point in the direction of the ship’s movement.
  21. c. Acceleration/deceleration
    At times, allowance must be made for the rate at which a ship increases and decreases speed. Another part of the tactical data folder, therefore, is the acceleration/deceleration table.
  22. d. Turning circle
    A ship’s turning circle is the path followed by the ship’s pivot point when making a 360 degree turn. The diameter of the turning circle varies with rudder angle and speed. With constant rudder angle, an increase in speed results in an increased turning circle. Very low speed (those approaching bare steerageway) also increases the turning circle because of reduced rudder effect.
  23. a. True bearing
    Based on a circle of degrees with true north 000 degrees.
  24. b. Relative bearing
    Circle drawn around the ship herself with bow 000 degrees.
  25. c. DIW
    Dead in the water.
  26. d. Head on
    When two power driven vessels are meeting on reciprocal or nearly reciprocal courses so as involve risk of collision.
  27. e. Crossing
    When two power-driven vessels are crossing and involve risk of collision, the vessel having the other to starboard must keep out of the way and will avoid usually by turning to starboard and passing astern of the other vessel or, if circumstances permit, speeding up and crossing ahead of the other vessel.
  28. f. Overtaking
    Any vessel overtaking another must keep clear of the overtaken vessel. An overtaking vessel is one that is approaching another vessel from any direction more than 22.5 degrees abaft its beam.
  29. g. Stand on
    vessel with the right of way.
  30. h. Give way
    Vessel that has to alter course or reduce speed to allow other vessel to pass.
  31. a. Swing circle
    Is the distance from where the anchor lays to the fantail. Scope of chain paid out plus length of ship.
  32. b. Drag circle
    Is the distance from where the anchor lays to the bridge. Scope of chain paid out plus length from the hawsepipe to polaris.
  33. a. Underway lighting
    Mast light, Range light, Stern light, Port side light, and Starboard side light.
  34. b. In-port, moored lighting
    Forward & Aft Anchor lights, Deck lighting, Waterline Security lights, and Aircraft warning lights.
  35. c. Engaged in special operations lighting
    On the Mast, Red over White over Red.
  36. d. Man overboard lighting
    On the Mast, Blinking Red over Red
  37. e. Not under command lighting
    On the Mast, Red over Red.
  38. f. Anchored lighting
    Forward & Aft Anchor lights, Deck lighting, Waterline Security lights, and Aircraft warning lights.
  39. g. Aground lighting
    On the Mast, Red over Red. And also Port and Starboard side light.
  40. a. Vessel at anchor day shapes
    One Ball
  41. b. Vessel not under command day shapes
    Ball over Ball
  42. c. Restricted in ability to maneuver day shapes
    Ball over Diamond over Ball
  43. d. Vessel aground day shapes
    Ball over Ball over Ball
  44. e. Constrained by draft day shapes
    One Cylinder
  45. a. Refueling/ammunition handling FLAG
  46. b. Senior Officer Present Afloat (SOPA) FLAG
  47. c. Personnel recall FLAG
  48. d. Boat recall FLAG
  49. e. Divers FLAG
  50. f. Personnel working aloft/over the side FLAG
  51. g. Hazards of Electro-Magnetic Radiation to Ordnance (HERO) FLAG
  52. h. Ready to receive a ship alongside FLAG
    • UNREP – Romeo,
    • Inport – India
  53. i. Man overboard FLAG
  54. j. Anchoring FLAG
  55. a. Binoculars
    The most commonly used optical equipment is the binoculars. Although normally only 7 power, the binoculars gives a wide range of vision and is best suited for searching over a wide area or for following a swiftly moving target. Ship's binoculars (known as big eyes) have a magnification of 20-power, with an apparent field of view of approximately 70 degrees. The binoculars are mounted on a height-adjustable carriage assembly that is adjustable through 70 degrees elevation ranging from 10 degrees depression to 60 degrees elevation with reference to the horizon, and that can rotate through 360 degrees in azimuth. Ship's binoculars consist of the binocular assembly, carriage assembly, and the pedestal.
  56. b. Stadimeter
    An instrument for determining the distance to an object of known height by measuring the angle subtended at the observer by the object.
  57. c. Sextant
    The marine sextant’s only function is to measure angles, either horizontally or vertically. The most common use of the sextant is for celestial observations using vertical angles between celestial objects and the horizon. It is also used for fixing your position using horizontal angles between three charted objects.
  58. d. Bearing circle
    A ring fitted over a repeater to find the bearing of any object or obtain the bearings of other ships to determine relative motion.
  59. e. Telescopic alidade
    The optical system simultaneously projects the image of the compass card, together with a view of the spirit level, onto the optical view of the telescope. By this means, both the object and its bearing can be viewed at the same time through the alidade eyepiece.
  60. f. Parallel Motion Protractor (PMP)
    The PMP is a valuable tool for plotting direction quickly and accurately. The PMP is designed to keep the moveable compass rose oriented to the longitude and latitude of any chart. An arm is attached to the moveable compass rose which can be rotated to whatever bearing you require and then moved to the object on the chart that the bearing was taken to, so an LOP can be drawn.
  61. g. Parallel rulers
    An instrument for transferring a line parallel to itself. Consists of two parallel rulers connected.
  62. h. Chart
    The nautical chart is designed especially for navigation and is a printed reproduction of Earth’s surface showing a plan view of the water and land areas. There are two types of chart projections, Mercator and Gnomonic. Mercator projection charts are the most commonly used navigational charts. Therefore, it is important that you understand the characteristics of these charts. The first thing to understand is that no navigational chart is perfect. The gnomonic projection’s chief advantage is that it plots a great circle as a straight line. This is most useful when planning long ocean passages. It is always best to take the shortest route from point A to point B.
  63. i. Gyrocompass
    A rapidly spinning body having three axes of angular freedom constitutes a gyroscope. This may be illustrated by the heavy wheel rotating at high speed in supporting rings or gimbals. The gyrocompass must be lit off a minimum of 4 hours prior to use. This allows the gyro to warm up and settle. It is desirable to light off the gyrocompass 24 hours prior to the scheduled underway time. Courses are TRUE courses.
  64. j. Magnetic compass
    The magnetic compass’ reference point is magnetic north. It is a back up in case of gyrocompass failure. Secondary course in case the gyro goes down. Courses are MAGNETIC courses.
  65. k. Radar
    A device or system consisting of a synchronized radio transmitter and receiver that emits radio waves and processes their reflections for display and is used especially for detecting and locating objects or surface features.
  66. l. Fathomether
    UQN-4A Determines the depth of water the ship is in. Used to read Fathoms and Feet. Times a signal from the bottom of the ship to the ocean bed and back. (Time x 4945.2 / 12 =fathoms.
  67. m. Satellite Navigation (SATNAV)
    The SATellite NAVigation (SATNAV) system is a highly accurate, passive, all-weather, worldwide navigational system suitable for subsurface and surface navigation, as well as for use in aircraft. This system has been in wide use in the fleet, and is also available to commercial interests. Because of today’s technology and expertise in ransistors, computers, and miniaturization, this system is extremely accurate.
  68. n. Global Positioning System (GPS)
    The Navstar Global Positioning System (GPS) was developed to provide highly precise position and time information anywhere in the world, regardless of weather conditions. Now fully operational, GPS consists of 21 satellites (plus 3 operational spares). The precise stationing of these satellites will provide worldwide coverage with a minimum of 4 satellites in view of any user.
  69. o. Laser Range Finder
    A laser rangefinder is a device which uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the target and returned to the sender. Due to the high speed of light, this technique is not appropriate for high precision sub-millimeter measurements, where triangulation and other techniques are often used.
  70. p. Integrated Bridge System
    Integrated Bridge System is a systems approach for the automated collection, processing, control, and display of the ship control and vital navigation sensor data in order to maximize bridge watch efficiency and Ship Control safety.
Card Set:
Navigation ESWS
2011-07-20 14:20:57
Navigation ESWS

Generic Navy ESWS on Navigation
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