Quiz 2 Navigation and Weather

Question 1

A skipper is responsible for the safety of the ____ and _____, While he may delegate tasks to an experienced ____, the skipper will always be held responsible.

Answer 1

crew and boat

crewmember

Question 2

List at least four important items of emergency equipment that should be located and checked before departure:

Answer 2

life jackets (PFD's)
fire extinguishers
horn
VHF radio
flares
bilge pump

Question 3

When controlling a dockline from on board, take at least one ____ around a cleat to take the load and avoid rope burns.

Answer 3

turn

Question 4

When docking or undocking under power, the two primary factors to assess are ____ and ____.

Answer 4

wind and current

Question 5

The flow of water generated by the propeller is called ____ ____.

Answer 5

prop wash

Question 6

The tendency of the stern of the boat with a right handed prop to move to ____ when reverse gear is first engaged is called ____ ____.

Answer 6

port

prop walk

Question 7

To make a 180-degree turn in a limited space you must perform a ____ ____. On a boat with a right handed prop. this entails turning to starboard with alternate bursts of ____ and ____ power.

Answer 7

standing turn

bursts of forward and reverse power

Question 8

When you encounter adverse wind conditions during docking or undocking, the use of ____ lines as well as the engine and the ____ will help you control the boat.

Answer 8

spring

rudder

Question 9

The greater the tidal range, the longer the docklines must be to allow the boat to ____ and ____ with the tide.

Answer 9

rise and fall

Question 10

List three indications your anchor may be dragging:

Answer 10

vibrating anchor chain
changes in range or bearings
closeness to another vessel

Question 11

Two anchors set from the bow 45 to 60 degrees apart is called a ____ ____. This method maximizes holding power and reduces ____.

Answer 11

forked moor

swing

Question 12

When approaching a mooring buoy, preparation and ____ between skipper and ____ are essential for a perfect pick up.

Answer 12

planning (or communicating)

crew

Question 13

The VHF radio is the primary means for making urgency communications. The three levels of urgent calls are ____ for life threatening situations, ____ for non-life threatening situations and ____ for navigation or weather hazards.

Answer 13

MAYDAY for life threatening situations
PAN PAN for non-life threatening situations
SECURITE for navigation or weather hazards

Question 14

The International Regulations for the Prevention of Collisions at Sea (COLREGS), published under the title ____ ____, establish actions to prevent collisions. Nevertheless, Rule 2 states that ____ is responsible for avoiding collision.

Answer 14

Navigation Rules

Everyone

Question 15

At night, a sailboat under sail may show a masthead ____ light alone. If under power. a boat must show a white ____ light above deck-level sidelights.

Answer 15

tricolor

steaming (or masthead)

Question 16

Before towing a dinghy. remove loose gear and tilt or remove the ____. When towing, use a ____ towline, attach the dinghy securely to the sailboat, and tow it at a ____ behind the boat appropriate for the conditions.

Answer 16

outboard
sturdy towline
distance

Question 17

When arriving in a foreign country, you must fly the ____ flag just below your starboard spreader. After clearing ____ and ____, you must lower it and fly the nations courtesy flag in its place.

Answer 17

Q flag
customs
immigration

Question 18

A large scale chart shows small geographic area in ____ detail. A smal scale chart shows a large area in ____ detail.

Answer 18

great

less

Question 19

To measure the distance between two points on a nautical chart, span your dividers between the two points, then measure on the latitude / longitude scale (circle one), where 1 minute = 1 ____ ____.

Answer 19

latitude

nautical mile

Question 20

If the distance between waypoints A and B on your course is 18 nm and your speed is 5 knots, your Estimated Time Enroute is ____ hours. If you depart A at 0845, your ETA at B will be ____.

Answer 20

3.63

1221

Question 21

Your direction of intended travel is called the ____, but the path that the boat actually follows is the ____. A properly calculated and steered ____ will allow your course and track to be the same.

Answer 21

course
track
heading

Question 22

Dead reckoning uses the boat’s ____, ____, and time elapsed to determine a DR position. A DR position does not incorporate ____ or leeway.

Answer 22

heading
speed
current

Question 23

The intersection of two or more ____ ____ ____ gives a fix, which is the calculated position of the boat.

Answer 23

lines of position (LOPs)

Question 24

When navigating with a gps plotter, its important to use the appropriate ____ to ensure you have the correct level of detail for safety.

Answer 24

zoom

Question 25

The vertical datum from which soundings are referenced on NOAA charts is ____ ____ ____ ____. On British Admiralty charts, the vertical datum is ___ ___ ___.

Answer 25

Mean Lower Low Water

Lowest Astronomical tide

Question 26

In the Northern hemisphere mid-latitudes, wind circulates clockwise and outward from a ____-pressure system, and counterclockwise and into a ____-pressure system.

Answer 26

High

Low

Question 27

Using the rule of 15s, state the lower threshold wind speeds for: Small Craft Advisory ____, gale ____, storm ____ and hurricane ____.

Answer 27

Small Craft Advisory > 20 kt
Gale > 35 kt
Storm > 50 kt
hurricane 65 kt

Question 28

____ fog forms on clear nights with ____ wind, and will burn off with the sun or dissipate in the wind. A fog that requires wind to transport warm air over cold water, and may persist even in strong winds is called ____ fog.

Answer 28

Radiation
calm
advection

Question 29

List at least three actions to take when navigating in low visibility.

Answer 29

take a fix
plot a course
slow down
make sound signals
hoist radar reflector

Question 30

Synoptic-scale describes weather patterns over a large area, but local winds may be strongly influenced by local factors such as ____.

Answer 30

terrain

Question 31

An onshore breeze, driven by differential heating of land and sea, that may enhance or diminish the synoptic wind is called a ____ ____.

Answer 31

sea breeze