service wide exam aton seamanship manual Flashcards
Fathom =
6 feet.
Small stuff is
Term for fiber or synthetic rope less than 1-1/2 inches in circumference
whats is a Whelp
One of the projecting ribs fitted on the periphery of a capstan barrel or gypsy head to give better grip to the line. Also, one of the sprockets on the wildcats of a windlass which engages the links of the chain cable.
contain the history of all wire rope, rigging hardware, and lifting equipment for its entire service life.
Registry of Lifting Appliances
The most common classes of 6 strand rope used with running rigging
6X19 or 6X36
Fiber core wire rope is used only on the
3 and 15 ton cranes on the Polar Class Cutters. They are also used with wire rope mooring systems typically used on the Western Rivers.
lowest breaking strength, lowest resistance to wear, highest fatigue life.
Plow steel (PS):
good combination of qualities; medium breaking strength, medium resistance to wear, medium fatigue life but with less flexibility.
Improved plow steel (IPS):
higher breaking strength, more resistance to wear, lower fatigue life and less flexibility. Used on some ATON platforms
Extra improved plow steel (EIP/XIP):
highest break strength, most wear resistance and lowest fatigue life. Used on some ATON platforms
Extra extra improved plow steel (EEIP/XXIP
Breaking strength equal to or greater than EEIP/XXIP plow steel wire rope.
High strength
Preformed wire ropes have many advantages over regular wire rope;
greater flexibility, resist kinking, facilitate affixing end fittings, and wind smoothly and evenly on drums. All ATON vessels shall use preformed wire rope
types of Rope Lay
(Right Regular Lay (RRL) Left Regular Lay (LRL) Right Lang Lay Left Lang Lay Alternate Lay
rope used in ordinary hoisting service shall have a design factor of
five.
rope used for personnel lifting must have a minimum safety factor of
seven.
Rotation resistant rope used for personnel lifting must have a minimum safety factor of
ten
Wire rope that has not been in use for 30 days or more shall
subject to a quarterly inspection.
Fiege fittings when properly assembled are rated
100% efficiency
two primary types of material used in poured sockets for wire rope;
zinc and epoxy resin. When assembled correctly, these fittings are rated at 100% efficiency
Pressed (Swaged) Fittings
97 to 100% efficiency
Wedge fittings are authorized only for spud winches.
approximately 80 percent of
Luff, Jigger, or Watch Tackle
mechanical advantage is 4:1.
Two-Fold Purchase
This consists of two double blocks with the standing part and hauling part coming from the same block. The mechanical advantage
4:1 or 5:1.
Pelican Hook
The tongue is then rotated until it can be secured with the tripping bail. The tripping bail is secured with the retaining pin, which is moused. Since the Pelican Hook is designed to be released in the upright position, a strong-back
chain used in a rigging application
Grade 8 or better
Gripe chains
grade 7 or better.
WoodenSaddles and Head Blocks
oak or softwood (i.e. Douglas fir/yellow pine)
Tag lines are secured to saddles and head-blocks and shall be a minimum
10 feet
ppe handling ATON batteries
rubber gloves, a rubber apron, a full face shield and splash proof goggles.
Fine speckles or ice crystals that float freely and individually in the water.
FRAZIL
Predominantly circular pieces of ice. Pieces are one to eight feet across with raised rims resulting from the pieces striking against one another
PANCAKE ICE
