Navigation Flashcards by Todd Tucker

What is the barometer?

Used to determine air pressure outside

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What does the stadimeter measure?

Distance of object

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What are the heights and range that the stadimeter measure at?

Height 50 and 200 Feet

Ranges 200 to 10,000 yards

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What does telescopic alidade do?

Takes real and true bearing to distant object

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What does sextant measure?

Measures angles

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What does chronometer do?

Gives mean solar time

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What is dead reckoning?

Estimated position based on course and speed

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What are the 6 rules of dead reckoning?

Every hour on the hour 
Every speed change 
Every course change 
Every fix 
Every new fix
Every line of position

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How does set and drift get its measurement?

By current direction and speed

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What effects Set and Drift?

Wind and current

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What is Set?

The direction toward which the forces tend to push vessel

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What is drift?

Velocity of the force in knots

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What is variation?

The difference between the value of true north and magnetic north

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What buoy system does Japan use?

IALA B

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What side are Red buoys? Port or STBD

STBD

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What side is green buoys?

PORTSIDE

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What does SCU stand for?

Steering control unit

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What does the SCU consist of?

Helm
Lee Helm
manual ships whistle button
Manual ship whistle lever above

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What is radio channel for bridge to bridge?

10,12 and 16

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What does Tell Tale Panel control?

Underway lights

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What color light is Masthead?

White

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What color lights are on port side

Red

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What color lights are STBD side?

Green

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What are the Inport lights?

Aircraft warning(red)
Flagstaff/jackstaff(white)
Anchor(white)
Deck
Waterline security(white)

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Light for man overboard?

2 red flashing lights

What color light for Not under command? (Loss of steering or propulsion)

2 red

What color light for restricted maneuver?

Red white Red

What color light is aground?

3 red

What day shape is man overboard?

Oscar

What day shape is restricted maneuver?

Ball, diamond, ball

What day shape is aground?

3 black balls

What day shape is not under command?

2 black balls vertically

What day shape is anchored

1 black ball

What day shape is constrained by draft?

1 cylinder

How many bells does the president of recognized country get?

How many bells do admirals get?

How many bells do captains and commanders get?

What is plane guard?

A ship stationed behind another ship conducting flight ops to pick up man overboard

what are the different ways to recover man overboard?

Helio small boat Shipboard (forecastle)

What is hardship aground?

Incapable getting underway on own

What is soft ship aground?

Able to get underway on own

What is Advance?

Distance gained in the direction of the original course when ship is turning

What is transfer?

The distance gained at right angles to the original course when the ship is turning.

What is pivot point?

Point of hull in which ship actually turns

What is turning circle?

Amount of distance ship travels when changing direction 180 degrees

What is true bearing?

In relation to North Pole

What is relative bearing?

Relation to an object based on bow of ship

What is DIW?

Ship comes to complete stop

What are the methods of obtaining ship position?

Electronic(triangle) Radar(triangle) Visual(circle) Composite, combination of any methods Celestial

How do we drive the ship if we lose both gyros? Where is it located?

Digital fluxgate magnetic compass Above helm

How many sec is prolonged horn blast?

4-6 sec

How many sec is short blast horn ?

1 sec

What is drag circle radius?

Sum of the distance between the hawsepipe to pelorus stands and the scope Chain let out

What is drag circle?

A inner circle around the anchor to determine if ships anchor is holding

What is swing circle?

Outer circle around anchor that represents maximum arc the ship can swing while at anchor

How do you get swing circle radius?

Sum of the ships length plus the scope of chain let out

How you determine scope of chain?

By depth of water times by 5-7

What is the Psychrometer measure? Explain

Atmospheric Humidity Gives relative humidity and dew point temperature

What is Code Alpha?

Divers

What is bravo flag?

Ammo handling/fuel transfer

What is November Charlie?

SOS

What is Delta flag?

Degaussing

What is foxtrot flag?

Fixed wing aircraft operations

What is Mike flag?

Medical ship

What is Oscar flag?

Man overboard

What is papa flag?

Personnel recall

What is Quebec flag?

Small boat Recall

What is Romeo flag

Preparing to come alongside (RAS)

What is Sierra flag?

Flag hoist drills

What is uniform flag?

Preparing to anchor

What is victor flag?

Streaming ops (MFTA)

What is golf flag?

Guide ship

What is hotel flag?

Helio ops

What is hotel 1?

Vert rep code

What is India flag?

Coming alongside Inport

What is kilo flag?

Man is aloft

What is Lima flag?

H.E.R.O.