ATON Flashcards
NEMA Strings
DTM
GST
GGA
GRS
GSA
2DRMS Tolerance
more than 0 Less than 9.8
Buoy Positioning Tolerance
15yds
Fixed Structure Positioning Tolerance
3 yds
What do you find a buoy at
Excursion
What do you set a buoy at
short stay
Excursion
The direction and distance from the sinker to the buoy.
Methods to determine Excursion
L method
H method
Manual Method
L method
only to be used in calm water with no wind. Pull and then let buoy settle back
H method
pull until at full excursion. Use Pythagorean theorem to solve
Manual Method
Estimate how the dynamic forces are affecting buoy and what percentage buoy is at full excursion. Do H method on USAIMS and then multiply by that percentage.
When to replace standard 1/2inch chain
48/32
Objectives of ATON
Assist with position
assist with plotting a safe course
warn of dangers and obstructions
promote safe and economical movement of commercial vessels
promote safe and effective movement of military vessels.
Aid
any device external to the vessel to assist with navigation or positioning
ICW
from brownsville TX to Manasque NJ
Isolated Danger
Black and red flashing 2 sec every 5sec. can be passed on either side
Safe Water Mark
red and white vertically stripped MOA white light
Minimum State light must be in
75% with 5 day autonomy
Class System for Buoys
1-6 with 1 being the largest and 6 the smallest
when is bottom part of door required to remain in
when lifting dor mors over 250 lbs.
TANB Load Zones (trailered)
B: 200
A: 400
C: 400
always put most of the weight in B/A
TAND Load zones (U/w)
B: 350
A: 500
C: 405
Max weight is 1255. going above is not advisable, but TANB can do 1500.
PPE required
Hard hat/chin strap
gloves
PFD
fixed blade knife
Safety glasses with ANSI standard Z87.1
safety toe boots
weight of 5th class plastics and foams
165lbs
