Navigation Flashcards
(OOD) Officer of the deck
Responsible for everything that happens on ship
Conning Officer
Responsible for ship handling. Orders the helmsman a corse to steer and lee helmsman a speed time order up
(BMOW) Boatswains mate of the watch
Responsible for all lookouts and for the helmsman and lee helmsman
Helmsman
Responsible for steering the ship and making course changes
Lee helmsman
Responsible for indicating speeds when ordered by the conning Officer
Lookouts
Responsible for reporting surface and air contacts
(QMOW)Quarter Master of the watch
Assists the OOD with getting ship safely to where it needs to go , makes course recommendations, maintain deck logs
Latitude
Is the angular distance from the equator. North and south
Longitude
Angular distance from the prime meridian. East or west
Set/drift
Ship is being pushed due to wind and current
GMT
Greenwich mean time. Is the solar time measured off 0 degrees longitude in Greenwich , England
Time zones
Determines current time based off meridian you are located. There are 25 time zones
Variation/deviation
Variation- difference between geographic north and magnetic north.
Deviation- is error caused by magnetic effect of any metal near compass
IALA(A/B)
International association of marine aids to navigation and lighthouse authority
Different methods for attaining ships position
7 methods. GPS 1 GPS 2 DAGR INS 1 INS 2 FURUNO AIS
Celestial
Means using a sextant and celestial body
Advance/transfer
Advance-the distance the vessel moves in the direction of the original course
Transfer- distance the vessel moves perpendicular
Acceleration/Deceleration
Acceleration- tables derived from own ships tactical data to determine distance traveled by the ship at various speeds
True bearing means
Bearing based on true north
Relative bearing means
Bearings in relation to the ship
DIW means
Dead in the water
Stand on means
Vessel stays on the same course
Give way means
Vessel alters it’s course or speed
Emergency conditions
- collision
- allission
- Aground
Collision
An act of colliding
Allision
Striking of one ship by another
Aground
Resting or lodged on the bottom of the ocean floor
Binoculars
Magnified glasses used for lookouts
Stadimeter
Measures the distance of an object of known height
Vessel at anchor
One black ball
Vessel not under command
Two black balls
Restricted in ability to maneuver
diamond ball
Vessel aground
Three black balls
Constrained by draft
Cylinder
Towing
Diamond
Refueling/ammunition handling
Bravo flag
Boat recall
Quebec flag
Personnel recall
Papa flag
Divers
Alpha flag
Personnel working afloat
Kilo flag
Senior officer present afloat
STBD pennant
Hazards of electro magnetic radiation to ordnance ( HERO)
Lima flag
Ready to receive a ship alongside
Romeo closed up
Man overboard
Oscar flag
Anchoring
Uniform
Absentee pennants
First substitute
Second substitute
Third substitute
First substitute
Flag Officer is absent
Second substitute
Chief of staff is absent
Third substitute
CO is absent ( shifts to the XO if captain is absent for more than 72 hours )
Low visibility sound signals
- 1 prolonged blast not exceeding 2 min. When underway, making way.
- 2 prolonged blast not exceeding 2 min. When underway, not making way.
- Rapid bell 5 seconds followed by a gong and repeated each minute when anchored
Barometer
Instrument for measuring atmospheric pressure
Psychrometer
Instrument used for determining atmospheric humidity consisting of dry bulb and wet bulb thermometers
Communication circuits
- JW circuit uses for bearing taking
- JX circuit uses for battle
- JL circuit uses for lookouts
Bull horn
Used to make voice louder
Telltale panel
Panel that controls navigational lights
(VMS) voyage management system
Uses electronic charts and sensors to maintain situational awareness and safe navigation
Gulf
Guide ship
Romeo at the dip
Delivery ship is preparing to take you alongside/receiving ship is ready to come alongside
Romeo close up
Delivery ship is ready for approach
Romeo hauled down
Messenger in hand
Prep at dip
Receiving ship expects to disengage in 15min.
Prep close up
Replenishment completed
Prep hauled down
All lines clear
Bravo at the dip
Temporary cease pumping fuel or transferring cargo
Bravo close up
Transferring or receiving cargo or fuel
Bravo hauled down
Transferring or receiving cargo or fuel complete
Swing circle
The amount of distance the ship is allowed to swing from her anchored position
Drag circle
A circle which shows the ship is dragging
Sextant
Precision instrument that can measure angles in degrees,minutes,seconds of celestial bodies
Bearing circle
Used to obtain bearing of another vessel or object
Telescopic Alidade
Used to obtain bearings of objects to determine ships position
Chart
Shows the ocean areas and shorelines used to navigate the open waters
Gyrocompass
Compass used to indicate true north
Magnetic compass
Compass used to indicate magnetic north
Radar
Used for situational awareness by displaying contacts and land masses
Fathometer
Determines depth of water
SATNAV
Satellite navigation
GPS
Global Positioning System
Laser Range Finder
Equipment that determines the range to a target through laser reflection
Navigational light underway
port/STBD running lights,mast light, and stern light
Navigational lights in port-moored
Aircraft warning lights and anchor lights
Navigational light not under command
Two vertical red lights
Navigational lights anchored
Aircraft warning lights,all around white light FWD and AFT, deck lights