EXW 110 (Unit Spacific) Waterborne Fundamentals

Question 1

International rules of the road

Answer 1

Applies to all vessels and seaplanes navigating on the high seas

Question 2

Inland rules of the road

Answer 2

Applies to all harbors, rivers, and other inland waters

Question 3

What is overtaking?

Answer 3

One vessel approaches the other from any more than two points (22.5 degrees) abaft of either beam

Question 4

What is crossing?

Answer 4

When each vessel has the other any place forward of two points abaft of their beam

Question 5

When is a vessel constrained by draft?

Answer 5

In relation to depth and width of navigable water a vessel is severely restricted in ability to deviate from course

Question 6

When is a bell used?

Answer 6

Used on any vessel 12 meters or more for sound signals

Question 7

When is a gong used?

Answer 7

On any vessel 100 meters or more in addition to the bell

Question 8

What is mean high water?

Answer 8

Average height of all high tides over the last 19 years

Question 9

What is mean low water?

Answer 9

Average height of all low tides over the last 19 years

Question 10

What is a spring tide?

Answer 10

Occurs when there is a full moon

- causes higher high tides and lower low tides

Question 11

What is a neap tide?

Answer 11

Occurs when there is a quarter moon.

- causes lower high and low tides

Question 12

What is a flood current?

Answer 12

When the horizontal movement of water is toward the shore.

Question 13

What is an ebb current?

Answer 13

When the horizontal movement of water is away from the shore

Question 14

What is slack water?

Answer 14

The period of time when there is no current

Question 15

What is the set?

Answer 15

Direction of the current

Question 16

What is the drift?

Answer 16

Speed of the current

Question 17

What are cavitations?

Answer 17

Propeller draws in air water mixture instead of just water

- causes a loss of thrust and control

Question 18

What are the two types of compass errors?

Answer 18

Variation- offset from true geographical north to magnetic north
Deviation- when the compass is affected by metallic masses

Question 19

What are some nautical chart markings

Answer 19

Sounding
Compass rose
Wreck
Shoal
Rock
Reef line
Buoys

Question 20

What is the PIM?

Answer 20

Plan of intended movement

- best possible route for a ship to move in

Question 21

What is dead reckoning?

Answer 21

Process determining a boats position by applying speed, time, and course from last known position

Question 22

What is a Fix?

Answer 22

A known position on Earth