Formulas, Numbers, Numonics

Question 1

What is the Numonic SIREN

Answer 1

S: Starboard I: Inward R: Red E: Even N: Nun

Question 2

What is the 2 + 2 Rule?

Answer 2

Used to find a reciprocal course: Take the first number of the current course. Add two if possible, if not subtract two. Then do the opposite to the second number of the course. This will give you the reciprocal. ie; if you add two to the first number then subtract two from the second number, if you subtract two then add two to the second number. 065 becomes 265 by adding to the first, then 245 by subtracting the second.

Question 3

With barometric pressure, a one inch of mercury increase in pressure equals a ______ inch decrease in water level.

Answer 3

You could have answered with any of the following: 1. 13.6

Question 4

With barometric pressure, a one hectopascal or millibar increase in pressure equals a ______ centimeter decrease in water level.

Answer 4

You could have answered with any of the following: 1. 1 2. one

Question 5

Standard barometric pressure equals _______ inches of mercury.

Answer 5

You could have answered with any of the following: 1. 29.92

Question 6

Standard barometric pressure equals _______ millimeter of mercury.

Answer 6

You could have answered with any of the following: 1. 760

Question 7

Standard barometric pressure equals _______ hectopascals or millibars.

Answer 7

You could have answered with any of the following: 1. 1013.25

Question 8

A nautical mile is equal to _____feet.

Answer 8

You could have answered with any of the following: 1. 6076

Question 9

A nautical mile is equal to _____ statute miles.

Answer 9

You could have answered with any of the following: 1. 1.15

Question 10

A nautical mile is equal to _____ Kilometers.

Answer 10

You could have answered with any of the following: 1. 1.85

Question 11

A nautical mile is equal to _____ meters.

Answer 11

You could have answered with any of the following: 1. 1852

Question 12

A nautical mile is equal to _____ yards.

Answer 12

Commonly 2000 yards Actually 2025 yards You could have answered with any of the following: 1. 2000

Question 13

A nautical mile is equal to _____ minutes of latitude.

Answer 13

You could have answered with any of the following: 1. 1 2. one

Question 14

A nautical mile is equal to _____ cables (British).

Answer 14

You could have answered with any of the following: 1. 10 2. ten

Question 15

A cable (British) is equal to _____ nautical miles.

Answer 15

You could have answered with any of the following: 1. 1/10

Question 16

A cable (British) is equal to _____ feet.

Answer 16

You could have answered with any of the following: 1. 608

Question 17

A cable (U.S.) is equal to _____ feet.

Answer 17

You could have answered with any of the following: 1. 720

Question 18

A cable (U.S.) is equal to _____ shots.

Answer 18

You could have answered with any of the following: 1. 8

Question 19

A shackle is equal to _____ shots.

Answer 19

You could have answered with any of the following: 1. one 2. 1

Question 20

A shackle is equal to _____ feet.

Answer 20

You could have answered with any of the following: 1. 90

Question 21

A shackle is equal to _____ fathoms.

Answer 21

You could have answered with any of the following: 1. 15

Question 22

A VRM of 0.017 approximately equal to _____ feet.

Answer 22

You could have answered with any of the following: 1. 100

Question 23

One kilowatt equal to _____ horsepower.

Answer 23

You could have answered with any of the following: 1. 1.35

Question 24

One horsepower equal to _____ kilowatt.

Answer 24

You could have answered with any of the following: 1. 0.74

Question 25

A meter is equal to _______ feet?

Answer 25

You could have answered with any of the following: 1. 3.281

Question 26

What is the formula for visual geographic range to the horizon using height of eye?

Answer 26

1.17 (vheight of eye in feet)

Question 27

What is the formula for hull speed (knots)?

Answer 27

1.34 (vLWL in feet)

Question 28

What is the formula radar horizon?

Answer 28

1.22 (vheight of antenna in feet)

Question 29

1 ton of bollard pull is considered to be equivalent to ______ shp?

Answer 29

You could have answered with any of the following: 1. 100

Question 30

100 shp is considered to be ______ tons bollard pull?

Answer 30

You could have answered with any of the following: 1. 1 2. one

Question 31

A cable (British) is equal to ______ Nautical Miles?

Answer 31

1/10 of a nautical mile.

Question 32

30 knots of wind is equal in force to ______ knots of current

Answer 32

You could have answered with any of the following: 1. one 2. 1

Question 33

1 knot of current is equal in force to ______ knots of wind

Answer 33

You could have answered with any of the following: 1. thirty 2. 30

Question 34

The specific gravity of fresh water is ______.

Answer 34

You could have answered with any of the following: 1. 1.000

Question 35

The specific gravity of salt water is ______.

Answer 35

You could have answered with any of the following: 1. 1.025

Question 36

The density of salt water is ______ oz/ft3.

Answer 36

You could have answered with any of the following: 1. 1025

Question 37

The density of fresh water is ______ oz/ft3.

Answer 37

You could have answered with any of the following: 1. 1000

Question 38

One long ton of fresh water is equal to ______ ft3

Answer 38

You could have answered with any of the following: 1. 35

Question 39

One long ton of salt water is equal to ______ ft3

Answer 39

You could have answered with any of the following: 1. 36

Question 40

When moving from salt water to fresh water draft will increase by _____%. (excluding hydrostatic properties)

Answer 40

You could have answered with any of the following: 1. 2.5

Question 41

Displacement varies with the ______ of the ship’s dimensions. 1. lineral change 2. square 3. cube 4. fourth power

Answer 41

Hooyer p. 9 The correct answer is: Number 3 cube

Question 42

Wetted area varies with the ______ of the ship’s dimensions. 1. lineral change 2. square 3. cube 4. fourth power

Answer 42

Hooyer p. 9 The correct answer is: Number 2 square

Question 43

Squat varies with the ______ of the ship’s speed. 1. lineral change 2. square 3. cube 4. fourth power

Answer 43

The correct answer is: Number 2 square

Question 44

Power required varies with the ______ of the ship’s speed. 1. lineral change 2. square 3. cube 4. fourth power

Answer 44

The correct answer is: Number 3 cube

Question 45

Resistance varies with the ______ of the ship’s speed. 1. lineral change 2. square 3. cube 4. fourth power

Answer 45

The correct answer is: Number 2 square

Question 46

VHF Ch 16 = _____ Mhz

Answer 46

You could have answered with any of the following: 1. 156.800 2. 156.80 3. 156.8

Question 47

VHF Ch 13 = _____ Mhz

Answer 47

You could have answered with any of the following: 1. 156.650 2. 156.65

Question 48

VHF Ch 22a = _____ Mhz

Answer 48

You could have answered with any of the following: 1. 157.100 2. 157.10 3. 157.1