Extra Nav Flashcards
Phase one of abandon ship:
Prepare all hands abandon ship
What is the low visibility detail?
Watch to be stationed during fog or reduced visibility to detect approaching ships or air craft.
Phase 2 of abandon ship:
All hands abandon ship except for securing/ salvage.
Phase 3 of abandon ship:
Secure salvage and abandon ship.
Describe a sextant:
Instrument used to measure angles of the sun, moon, stars, and planets.
What is PMP?
Parallel motion protractor. Arm mounted On The navigators chart table to help measure and plot angles.
What is a gyrocompass?
Determines true north.
What is a magnetic compass?
Determines magnetic north.
What is radar?
Determines distance.
Describe LOP:
Line if position. Bearing line; when used with 2 other LOPs produces a fix or position of ship.
What is Greenwich mean time?
The standard reference point that is used to measure time within time zones.
How many flag bags are there?
- One port one stbd.
What are flags, pennants, and day shapes used for?
Sending and receiving messages and tactical signals.
What is semaphore?
More secure means than flashing lights. Flags or wands attached to flashlights.
What is the telltale panel for?
Energize and de-energize navigation lights.
Foxtrot flag:
Fix wing and/or helo ops.
Hotel flag:
Helo ops.
India flag:
Ready to receive ship alongside.
Lima flag:
HERO (hazards of electro-magnetic radiation to ordnance)
Uniform flag:
Anchoring.
Quebec flag:
Boat recall or quarantine.
Five flag:
Breakdown
