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Seamanship > Final > Flashcards

Final Flashcards

1
Q

Most common anchor on large vessels

A

balt or patent stockless anchor

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2
Q

common anchor on smaller vessels

A

danforth anchor

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3
Q

common nautical measurements - fathom, shot, cable, nautical mile, league

A

1 fathom = 2 yards/6 feet
1 shot = 15 fathoms/90 feet
1 cable = 120 fathoms/720 feet/ tenth of a nautical mile
1 nautical mile = 6076 feet = 1 minute of latitude
1 league = 3 nautical miles

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4
Q

measurement that anchor chain comes in

A

shots

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5
Q

anchor chain characteristics

A

has a stud in the middle that prevents the link from distorting. has removable pin chain links. has chain swivel links. connects to anchor with anchor shackle

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6
Q

ground tackle definition

A

everything involved in raising and lowering anchor, the anchor chain, anchor, etc

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7
Q

anchor chain markings to count shots

A

red - end/beginning of shot

white:
one on either side of red = 1 shot
two on either side of red = 2 shots
three on either side of red = 3 shots, etc

yellow - entire length of shot. 2nd to last shot in chain (warning shot)
red - entire length of shot. last shot in chain (danger shot)

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8
Q

steps in anchoring

A
  1. drop anchor to bottom as vertical as possible (power out)

2. let go anchor chain, lay out anchor to length needed

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9
Q

length from hawspipe to the anchor

A

rode

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10
Q

the ratio of the length of chain laid to the depth of the water (5:1, 7:1, 10:1), etc

A

scope

i.e. for a 5:1 ratio:
50 ft of water needs 250 ft of chain. lay 3 shots for 270 ft of chain

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11
Q

the curve in chain from the vertical from the ship to the horizontal from the sea floor. affected by wind and current

A

catenary

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12
Q

pulling anchor steps

A
  1. eliminate catenary/make anchor chain as straight as possible
  2. pull in anchor
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13
Q

what affects the angle of the shank on the sea floor?

A

scope and catenary

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14
Q

angled steel pipe duct through which the anchor chain is let overboard. also the storage area for the shackle

A

hawes pipe

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15
Q

vertical steel pipe duct from the bottom of the windlass to the chain locker through which the anchor chain is lead

A

spurling pipe

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16
Q

an long stretching screw used to tighten rigging

A

turnbuckle

17
Q

a sprocketed wheel with indentations for the anchor chain to rest in. It is used to pay out or haul in the anchor

A

wildcat

18
Q

a heavy bar that lays across the anchor chain, behind the riding chock. used to open or up when the anchor chain is being paid out, and closed or resting on the chain when it is being retracted. If the windlass or wildcat breaks when the anchor chain is being retracted, it will stop the chain from running out.

A

riding pawl

19
Q

relative location of contact ahead of vessel, approximately 45 degrees from centerline

A

BROAD

20
Q

degree of angle between fluke and shank for best holding power

A

0°

21
Q

metal ring with groove on outside to fit eye of wire rope

A

THIMBLE

22
Q

Block and tackle – what it means to rove to advantage/disadvantage, how to calculate

A

advantage - pull is same direction as load is moving
disadvantage - pull is opposite direction load is moving

Force = weight of load + friction (10% weight x # sheaves) divided by mechanical advantage

23
Q

lines or wire rope from mast head to rail running transversely, often supporting mast

A

SHROUD

24
Q

link of anchor chain painted red

A

DETACHABLE LINK

25
Q

A large amount of water has collected in the bilge, not flowing to the strum box, what do you check?

A

BLOCKAGE IN THE LIMBER HOLES

26
Q

when the movable block has contacted the standing block

A

2 BLOCKED OR CHOCKABLOCK

27
Q

bearing of object between stern and beam

A

ABAFT

28
Q

uses a ratcheting action to create tension on chain

A

RATCHETING CHAIN BINDER

29
Q

openings, with NO cover, in bulwarks, to carry off water

A

SCUPPERS

30
Q

small wire or twine seized across hook or shackle pin to prevent unhooking

A

MOUSING

31
Q

Tanker vessel “VLCC”

A

VERY LARGE CRUDE CARGO

Seamanship (1 decks)

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