Navigation Flashcards
State the duties of the OOD
Direct representative of the CO
Responsible for safe navigation of the ship
Overall in charge of the pilothouse
State the duties of the Conning Officer
Directs orders to the Helmsman
State the duties of the Boatswain’s Mate of the Watch
In charge of all lookouts and the helm
Passes word and the POD over the 1MC
State the duties of the Helmsman and Lee Helmsman
Helmsman: steers
Lee Helmsman: speed
Where are the lookouts stationed?
Port and starboard pilothouse and aft flight deck
**Low visibility detail: 2 forward on the fo’c’sle, 1 added aft
State the duties of the Quartermaster of the Watch
Responsible for safe navigation of the ship
Direct representative of the Navigation Officer
Builds navigation plans
What is set and drift?
Set: direction the ship is going
Drift: speed the ship is going
What is Zulu time?
GMT/Coordinated Universal Standard Time
What is variation and deviation?
Variation is the difference between true and magnetic north
What is IALA?
International Association of Lighthouse Authorities
What are the different methods of attaining the ship’s position?
GPS 1, GPS 2, INS 1, INS 2, DAGR, Celestial
What are range/channel markings?
“Traffic lights” that keep the ship in the correct “lane” when traversing to/from port
What is advance/transfer?
Advance: how far forward you travel before final course
Transfer: how far left or right you travel before final course
What are the types of turning circles?
Final diameter is the completion of a 360 degree turn. Tactical diameter is the completion of a 180 degree turn.
What are the underway navigation lights?
2 white mast lights, one fwd, one on the mast.
Stern light, white light
Port running light, red light
For flight quarters we will secure the stern white light and illuminate the blue stern light
What are the in port moored lights?
All deck lights illuminated, forward jack staff white light, aft jack staff white light, aircraft warning light.
(Same for anchored)
(Aground add 2 all around red lights)
What are the engaged in special operations lights?
Also known as restricted in ability to maneuver or task lights. There are 6 task lights, three on each side of the mast. Top light is red, middle light is white, and bottom light is red.
We can use the barrel switch to change the configuration to top red, middle off, and bottom red to indicate not under command. In addition, we can make the red over red indicate man over board, two flashing red lights.
What day shapes are used for vessel at anchor?
One black ball
What day shapes are used for vessel not under command?
Two black balls
What day shapes are used for restricted in ability to maneuver?
Ball, diamond, ball
What day shapes are used for vessel aground?
Three black balls
What day shapes are used for constrained by draft?
Cylinder
What day shapes are used for towing?
Diamond
Flag used for refueling/ammo handling
Bravo
Flag used for Senior Officer Present Afloat
Designation, Starboard, Papa, Pier #
Flag used for personnel recall
Papa
Flag used for boat recall
Quebec
Flag used for divers
Alpha
Flag used for personnel aloft/over the side
Kilo
Flag used for Hazards of Electromagnetic Radiation to Ordnance
Lima
Flag used for man overboard
Oscar
Flag used for anchoring
Uniform
What is a sound signal for low visibility?
One prolonged blast every 2 minutes (making way)
Two prolonged blasts (not making way)
What measures atmospheric pressure?
Barometer
What measures wet and dry bulb temperatures?
Psychrometer
What are the swing and drag circles?
Swing: length of chain plus length of ship
Drag: Length of chain plus hawsepipe to pelorus
