Coast Guard VI Boat Handling

Question 1

Where does rudder turn boat?

Answer 1

if rudder port, will turn bow port (BUT tiller is opposite!)

Question 2

bank cushion? bank suction?

Answer 2

-moving forward narrow canal, bow creates wedge, moves bow away -suction from engine causes to move stern towards edge in sum this may jerk boat to other side suddenly (especially with steep bank)

Question 3

bow cushion? stern suction?

Answer 3

think two boats meeting (like bank shit) -as you start passing bow cushion pushes bow away (good), but then stern suction sucks in so gotta correct -*slow down*!

Question 4

where is current strongest in a bend?

Answer 4

outside of the bend! and where it’s steepest bank

Question 5

squat? rough speed for 1 knot

Answer 5

increase engine speed in shallow water, engine lowers even more, may be bad….hit ground! 1 knot: 100 feet a minute

Question 6

most important first docking line coming alongside

Answer 6

bow after spring line

Question 7

tips for backing slip

Answer 7

have rudder slightly opposite the prop walk (to offset the walk) before you turn make sure you got enough room to swing stern or bow!

Question 8

pitch vs roll vs heave

Answer 8

pitch is up and down motion bow/stern roll: side to side heave: vertical motion of entire boat

Question 9

advance vs transfer

Answer 9

when turning, advance distance you move where you want, transfer is lateral movement

Question 10

what is leeway

Answer 10

lateral movement downwind of your intended course

Question 11

COB Williamson vs Anderson

Answer 11

Williamson: dark/fog, go 60 degrees then reciprocal…allows you to retrace your step Anderson: need multihull basically quickstop

Question 12

With Range Towers 1) Both under 2) Top is to left 3) Top is to the right

Answer 12

-middle of channel -you’re to the left of the channel -you’re to the right of the channel

Question 13

Safe Water Mark

Answer 13

Vertical Red/White, White Light Morse A, Spherical, letter

Question 14

Isolated Danger Mark

Answer 14

Question 15

Flash

Quick Flash

Occult

Isophase

Composite group

When you see composite flash?

Lateral aids?

Danger

Answer 15

more dark

>60,<80 flash

more light

equal light/dark

combo

• only junction
• all else

group flash

Question 16

what does yellow buoy mark?

Answer 16

special buoy

-anchor, fishing, center traffic

F sign, yellow light fixed or flashing

Question 17

4 reg marks

(white/orange)

1) diamond with cross
2) diamond
3) circle
4) rectangle

Answer 17

1) BANNED
2) caution/someting bad
3) slow down, operating restrictions
4) info

Question 18

what is period?

mooring buoy?

Answer 18

length between cycles

white with blue band

Question 19

Travel/Cruising Guide

meridien vs parallel

confusing but large scale= small areas, small scale=large areas!

Answer 19

Coast Pilot (international: Sailing Directions)

meridien=longitude

parallel=latitude

1: 2500 is large scale (for small area)
1: 600,000 is small scale (for huge area)

Question 20

Rough guide: 40 foot boat, weight of anchor?

Anatomy of an anchor (4 parts)

Answer 20

18 pounds

Question 21

Best Holding? Worst?

Answer 21

Best: hard sand/clay

Worst: Grass

Question 22

Accuracy GPS

DGPS

Radar Min/Max range

Answer 22

20 meters

1-5 meters!

RADAR min: 20-50 yards, max: line of sight (so below horizon screwed)

Question 23

Importance of transducer and depth meter

3 surfaces on bottom and correlated image

Answer 23

need to know where it is and account for it! also, add draft of boat to get actual depth

sharp=clear, fuzzy=muddy, jagged= rocky