SEAMANSHIP/NAVIGATION FUNDAMENTALS

Question 1

Cavitation of a propeller occurs due to what mixing with water which can reduce thrust?

Answer 1

Air

Question 2

Define mean high/low water.

Answer 2

Average high/low water level over a 19-year period.

Question 3

Spring and neap tides occur when?

Answer 3

During new moon, first quarter, last quarter, and full moon.

Question 4

The velocity of current is commonly called?

Answer 4

Drift

Question 5

The front and rear end of a boat are known as?

Answer 5

Bow and Stern

Question 6

The beam of a vessel is located where?

Answer 6

Amidships

Question 7

The compass error, which results from the offset of true geographic North to magnetic North, is what?

Answer 7

Variation

Question 8

Deviation error is caused by?

Answer 8

A ship acting as a magnet

Question 9

On a compass rose the inner circle indicates?

Answer 9

Magnetic math

Question 10

A ship’s position is known as?

Answer 10

Fix

Question 11

Name three items required to be on board a F-470 prior to getting underway.

Answer 11

Anchor in line, first aid kit, flare kit, foot pump and hose, compass, paddles, VHF radio

Question 12

A reaction boat operates in which defensive zone?

Answer 12

Threat

Question 13

Which boat formation is warranted when there is a suspicion the area is mined?

Answer 13

Column

Question 14

Who issues fire commands on board a boat?

Answer 14

Coxswain

Question 15

Check fire command means?

Answer 15

All gunners cease fire temporarily to check effect

Question 16

Weapons free command indicates?

Answer 16

Firing at gunners discretion