Where does rudder turn boat?
if rudder port, will turn bow port (BUT tiller is opposite!)
bank cushion? bank suction?
-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)
bow cushion? stern suction?
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*!
where is current strongest in a bend?
outside of the bend! and where it's steepest bank
squat? rough speed for 1 knot
increase engine speed in shallow water, engine lowers even more, may be bad....hit ground! 1 knot: 100 feet a minute
most important first docking line coming alongside
bow after spring line
tips for backing slip
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!
pitch vs roll vs heave
pitch is up and down motion bow/stern roll: side to side heave: vertical motion of entire boat
advance vs transfer
when turning, advance distance you move where you want, transfer is lateral movement
what is leeway
lateral movement downwind of your intended course
COB Williamson vs Anderson
Williamson: dark/fog, go 60 degrees then reciprocal...allows you to retrace your step Anderson: need multihull basically quickstop
With Range Towers 1) Both under 2) Top is to left 3) Top is to the right
-middle of channel -you're to the left of the channel -you're to the right of the channel
Safe Water Mark
Vertical Red/White, White Light Morse A, Spherical, letter
Isolated Danger Mark
When you see composite flash?
what does yellow buoy mark?
-anchor, fishing, center traffic
F sign, yellow light fixed or flashing
4 reg marks
1) diamond with cross
2) caution/someting bad
3) slow down, operating restrictions
what is period?
length between cycles
white with blue band
meridien vs parallel
confusing but large scale= small areas, small scale=large areas!
Coast Pilot (international: Sailing Directions)
1:2500 is large scale (for small area)
1:600,000 is small scale (for huge area)
Rough guide: 40 foot boat, weight of anchor?
Anatomy of an anchor (4 parts)
Best Holding? Worst?
Best: hard sand/clay
Radar Min/Max range
RADAR min: 20-50 yards, max: line of sight (so below horizon screwed)
Importance of transducer and depth meter
3 surfaces on bottom and correlated image
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