Aton Flashcards
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what are the lighted buoy attributes? L R B G W H I C N F
lighted radar reflector bell gong whistle horn ice can shaped rr nun shaped rr foam
what is an 8x26LWR
8 foot diameter, 26 foot long whistle radar reflector
Buoy Serial Numbers.
what is 8-93-11-xx?
Buoy 8-93-11-XX is an 8X26LR. Built in 1993, it was the 11th buoy built by contractor XX.
what (5th class) are marked with the year built and manufacturer’s code.
Plastic unlighted buoys
what (4th, 5th, and 6th class) and fast water foam buoys are marked with the buoy class, year built, and manufacturer’s code.
Unlighted foam buoys
what (4th and 6th class) are marked with the year built and the manufacturer’s code.
Steel river buoys
what discrepancy buoys are marked with the year built and the manufacturer’s code.
Lighted plastic
Name all the buoy type sizes?
9X35LWR, 9X32LR, 9X20BR/GR 8X26LR/LWR 8X21LR
7X20LI 7X17LR 6X20LR 5X11LR 5X9LFR 3 1/2X8LR
how many classes of unlighted buoys are there?
1-6 class meaning that one is the biggest and down
New buoys are fabricated by commercial contractors in accordance with Commandant (G-SEC-2) specifications, and must be accompanied with what form? and what must you check for?
DD-250 shipping document(s) must accompany buoy shipments. Ensure that the types, colors, and quantities of the buoys shipped agree with the DD-250. Check for damage that may have occurred during shipment. Contact Commandant (G-SEC-2) immediately if a buoy is damaged.
what must be done prior to delivery in accordance with paragraph 2.E.4.m.(1) before delivery to the servicing unit, and who do you contact if the air test fails?
Air test must be complete and Commandant (G-sec-2) must be contacted
When a buoy cannot be economically repaired and upgraded within the Labor Hour Limits of Table 2-10, it shall be surveyed. A Category II nonstandard buoy that cannot be economically repaired and upgraded to a Category I buoy shall also be ?
Survey of steel buoys
Be aware that combustible gases could be present in the buoy hull. Before beginning any work on the buoy, the hull shall be tested for combustible gases using a combustible gas monitor or explosive meter. Insert the probe from the meter into the buoy body air test fitting.
gas free testing
- How many Loading Zones are on the 26’ TANB and what are their capacities?
one loading zone and max weight is 500lbs or two 250lb trubs
What do you know about the WLI- Buoy Tender Inland?
65’ no barge, no spuds, twin screw, Draft 5’ 5” flat bottom ideal for working shallow bays & inlets, commissioned in 1954 crew of 8; no cook (ELDERBERRY Petersburg AK, BAYBERRY Oak Isl, NC) Hydraulic crane 4k WLL
75’tender pushes either a 68’or 84’ barge, all have spuds, commissioned 1962-1965, crew of 16 including CS. CG-300 crane 18k WLL
WLIC- Inland Construction Tender
65’ & 75’ push barges of 90’, 99’ or 130’ in length, all have spuds. 65’ commissioned 1960-62, 75’ commissioned 1964-1970, 1990. Crew of 15 including FS
WLR- River Buoy Tender,
Are buoys on the Western Rivers set on assigned positions?
No, The Western Rivers Marking System reflects the unique environmental conditions that characterize these waterways: constantly shifting channels due to shoaling, current, and changes in river stage levels. Consequently, it is not practical to establish permanent buoy positions marking the navigable channel nor is it feasible to account for floating aids in the conventional sense. The Western Rivers Marking System concept places a great deal of responsibility on the ATON units to position floating aids to meet the changing river conditions based on a continuing assessment of the river to ensure that the best water is marked. Constantly changing river conditions prevent more strict design guidelines. Unit Commanding Officers must use their best judgment concerning the number and placement of aids.
What is Pooled water?
Where river levels are controlled by the Army Corps of Engineers through Locks and Dams. The Ohio, Tennessee, Cumberland, Illinois, Arkansas, and Upper Mississippi (above St. Louis) River levels are controlled by the Army Corps of Engineers. The water levels are relatively stable and buoys seldom move. The buoys are set using sinkers with wire rope or chain moorings
What is Fast water?
On the Mississippi River below St. Louis and the Missouri River, due to the wide range of water levels and changing conditions, the position of both buoys and day boards may change. Crossing day boards are used to mark the channel as it moves from one bank to the other and buoys are set using sinkers with wire rope
What buoy types will you find on the Western Rivers?
Unlighted 6CT/6NT, 6CR/6NR, 4CR/4NR unique characteristics? Foam Filled, Fin stabilized to remain upright in swift current. Lighted 3 ½x8 LR, 5x9
What is a Jet pipe?
A jet pipe is a device that uses water pressure to force a cone connected to a wire rope mooring into the bottom to hold the buoy on station. Typically used on the Missouri River in areas with a soft bottom
What is a dump board?
A device used to deploy mooring sinkers. The dump board allows a single person to deploy a sinker because of the lever action and pivot pin.
what are flanking rudders
All of the 75‟ WLRs and some 65‟ WLRs have flanking rudders in place. Flanking rudders are a pair of rudders installed forward of the screw, used for maneuvering when the propellers are turning a stern regardless of the direction of actual movement of the towboat. Flanking rudders are also called backing rudders
Describe hazards your crew may encounter when working shore aids. Are herbicides authorized for use?
(brushing, climbing, poisonous plants)? Herbicides are liquids that kill plants.
What is fixity
When a pile penetrates the seabed to a depth where the pile will be adequately supported by the surrounding soil enabling it to resist applied overloading lateral forces to the point of structure failure.
What is refusal
When a pile has been driven to the point where 20 blows from a diesel hammer fails to drive the pile more than an average of 1/8 inch per blow.
What do you do when you cannot achieve fixity?
When the penetration required for fixity cannot be achieved, it may be necessary to use a multiple-pile structure. Multiple piles should also be used when there is a need to reduce vibration.
Structure knockdown/Recovery ops: How do you locate wreckage?
Visually piles broke off above water line, wire sweep, sonar, divers.
What is a wire sweep? When would you perform? What is the purpose?
To locate sunken wreckage (tower, piles) mark with a TRUB to facilitate recovery by tender
What is the most critical part of a waterborne fixed steel structure to inspect?
Splash Zone and at the extreme low water level.
What does MPW mean in regards to ATON structures
Multi Pile Wood
What crane type is on all WLIC class cutters?
CG-300 Lattice boom crane
What is the main tool used to drive piles?
Diesel powered pile driving hammer, either the DELMAG model D-6 or PILECO model D6-42 Ref
