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Boat Crew > Boat Characteristics > Flashcards

Boat Characteristics Flashcards

0
Q

What are the two types of keels?

A
  • Bar

- Flat plate

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1
Q

What are the three types of hulls?

A
  • Displacement
  • Planing
  • Semi displacement
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2
Q

What is the purpose of the keel?

A

The keel is the backbone of the boat, runs fore and aft along the center bottom of the boat

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3
Q

What are the three integral parts of the keel?

A
  • Frames
  • Stem
  • Sternpost
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4
Q

What is a displacement hull?

A

A displacement hull boat pushes away water allowing the hull to settle down into the water

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5
Q

What is a planing hull?

A

Similar to a displacement hull, but it skims along the surface of the water

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6
Q

What is a semi-displacement hull?

A

Is a combination of characteristics of the displacement hull and planing hull.

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7
Q

How are doors and hatches made watertight?

A
  • It is sealed into a raised framework (coaming)
  • Rubber gaskets
  • Must be securely dogged
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8
Q

What is light displacement?

A

The weight of the boat excluding fuel, water, outfit, cargo, crew, and passengers

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9
Q

What is loaded displacement?

A

The weight of the boat including fuel, water, outfit, cargo, crew, and passengers

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10
Q

What is center of gravity?

A

The point at which the weight of the boat acts vertically downwards

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11
Q

What is buoyancy?

A

The upward force of water displaced by the hull

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12
Q

What are the two types of forces?

A
  • Static

- Dynamic

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13
Q

What is a static force?

A

Caused by placement of weight within the hull

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14
Q

What is a dynamic force?

A

Caused by actions outside the hull such as winds and waves

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15
Q

What is the shank of the anchor?

A

Aids in setting and weighing the anchor, attachment point for the anchor line

16
Q

What are the flukes of the anchor?

A

Dig in the bottom and bury the anchor, providing holding power

17
Q

What is the crown of the anchor?

A

Lifts the read of the flukes, and forces the flukes into the bottom

18
Q

What is the stock of the anchor?

A

Prevents the anchor from rolling or rotating

19
Q

What is displacement?

A

The weight of the boat and is measured in long tons (2,240 lbs)

20
Q

What is deadweight?

A

The difference between the light displacement and the maximum loaded displacement of a boat

21
Q

What are the types of natural line?

A
  • Manila
  • Hemp
  • Cotton
  • Sisal
22
Q

What are the types of synthetic line?

A
  • Nylon
  • Polyethylene
  • Polypropylene
  • Polyester
23
Q

How is line size categorized?

A

Small stuff: Up to 1.5” in circumference
Line: 1.5” to 5” in circumference
Hawser: Everything over 5” in circumference

24
Q

What is the only line used for towlines on Coast Guard boats?

A

Double-braided nylon

Boat Crew (7 decks)

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