After completing the assigned reading, answer each question below in the space provided.  When you are done with all of the questions, click on the "Submit Answers" button at the bottom of the page.

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1.  Answer BOTH questions below in the space provided:

A.  What are the four main categories of constructed navigational aids?

B.  What is their purpose?

2.  What are "light lists"?

3.  What are the three principal characteristics of navigational lights?  Briefly describe each.

4.  What is the "visibility" of a light?

5.  What is the purpose of a lighthouse?

6.  What is a light tower?

7.  What is the purpose of buoys?

8.  Why must buoys not be depended upon alone for piloting?

9.  What are the eight main types of buoys?

10.  Answer BOTH questions below in the space provided:

A.  How are buoys colored in the United States?

B.  What is the jingle used as a reminder for red buoys?

11.  How are obstructions in a channel buoyed?

12.  What do the following buoys indicate?

A.  White buoys

B.  Red and white vertically striped buoys

C.  Black and white horizontally banded buoys

D.  White buoys with orange markings

E.  Yellow buoys

13.  Answer BOTH questions below in the space provided:

A.  How are buoys numbered?

B.  How are channel buoys lighted?

14.  What is a "daybeacon"?

15.  Answer BOTH questions below in the space provided:

A.  What is a "range" on a channel?

B.  Where are ranges used a great deal for piloting?

16.  Answer BOTH questions below in the space provided:

A.  What is the name of the channel in which light-draft vessels can navigate from the Chesapeake Bay almost to the Mexican border without going into the ocean?

B.  What is the significant color identifying all buoys, daybeacons, or light structures along this channel?