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BM1 SWE > BM3 Ops And Seamanship > Flashcards

BM3 Ops And Seamanship Flashcards

0
Q

What is displacement?

A

The weight of the vessel measured in long tons. *long ton is 2,240 pounds

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1
Q

What is critical speed?

A

The max speed a displacement hull will travel before requiring excessive power. 1.34x the square root of the waterline.

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2
Q

What is light displacement?

A

Weight excluding fuel, water, outfit cargo, crew and passengers.

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3
Q

What is loaded displacement?

A

Fuel, water, outfit cargo, Crew and passengers

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4
Q

What is dead weight?

A

The difference between light and maximum loaded displacement.

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5
Q

What are lines measured by?

A

Circumference

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6
Q

What is wire rope measured by?

A

Diameter

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7
Q

What is right hand lay known as?

A

Z

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8
Q

What is left hand lay known as?

A

S

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9
Q

What is Manila line made from?

A

Abaca plant

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10
Q

What is marlin line made from?

A

Hemp. * does not recover from being stretched.

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11
Q

What is the main component in natural fiber line?

A

Cellulose

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12
Q

During bending, line strength may decrease up to __ times.

A

5

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13
Q

Damage to internal natural fiber lines occurs when a line is under strain greater than ____% of it’s breaking strength

A

75%

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14
Q

Cockles can reduce the strength of a line by as much as ___.

A

1/3

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15
Q

If the circumference of a line is reduced by ___% or more, the line should be replaced.

A

5%

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16
Q

Rust that extends into the cross section of a line can lower the strength by as much as ___%.

A

40%

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17
Q

A knot can reduce the strength of a line by as much as ___-___%.

A

50-60%

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18
Q

A splice can reduce the strength of a line by as much as ___-___%.

A

5-10%

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19
Q

The eye of a line should be __ times the diameter of the line.

A

6

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20
Q

For three strand line how many tucks are required for natural line?

A

3

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21
Q

For three strand line, the number of tucks for synthetic line is__.

A

4

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22
Q

Markings for splicing line:

A

R- length of fid
X- desired loop size (where the core will come out)
Z- 1/2 fid from X towards the slip knot
Slip knot is 5 fid lengths towards the standing line.

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23
Q

How many wraps including an extra foot are needed for temporary whipping?

A

15-20

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24
Q

For temporary whipping, also known as common whipping, how many times the circumference the line is needed?

A

10

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25
Q

What is the most commonly used and most practical method of seizing?

A

Round seizing. Marlin is the most common used and the smallest.

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26
Q

What is the rule of thumb in figuring what size cleat is needed with the size of line?

A

The line should be 1/16 in diameter for each inch of cleat. Example: For 1/2” line, an 8” cleat would be used.

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27
Q

What is the minimum lbs of buoyancy for a type III PFD?

A

15.5 lbs

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28
Q

If a type III is worn without a SAR vest a ____ and ____ are required.

A

Strobe light and whistle

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29
Q

Mustang survival MD3031 has ___ inches of reflective tape and provides ___ lbs of buoyancy.

A

64 inches, 35 lbs

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30
Q

The hydrostatic release of the inflatable PFD will inflate when submerged __ inches or more of water.

A

4 inches

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31
Q

AEC has __-__ lbs of buoyancy.

A

22-45 lbs

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32
Q

What do you lubricate the neck seals on dry suits with?

A

Talcum powder

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33
Q

Use beeswax otherwise known as ________, to lubricate the slide fasteners.

A

Paraffin

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34
Q

The Boat Crew Survival Vest has __ storage pockets.

A

5

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35
Q

ACR firefly was tested at __ feet of depth.

A

33 feet

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36
Q

ACR firefly3 has a minimum of __ hours of continuous use at __ degrees Celsius.

A

8 hours, -1 C

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37
Q

PLB is capable of broadcasting on ___ MHz and provides a position accurate within __ miles within __ minutes.

A

406 MHz, 3NM, 90 minutes

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38
Q

What are the 4 scenarios likely to lead to capsizing the RBS?

A
  1. High speed maneuver
  2. Boarding operations
  3. Extreme seas/surf
  4. Towing
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39
Q

Water less than __ degrees F can lower your body temperature, robbing your body of heat __ times faster than air.

A

70 degrees, 26 times

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40
Q

A member in water temperature of 50-60 degrees F has an expected survival time of __-__ hours.

A

1-6

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41
Q

Life rafts must meet or exceed __________.

A

46CFR160.051

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42
Q

Life rafts have a __ year service life.

A

20

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43
Q

Stokes litter floats face up at a ___ degree angle.

A

45

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44
Q

The top __-__ inches will stay above the water.

A

18-24

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45
Q

There is a __ lb buoyancy weight on the bottom of the stokes litter.

A

5 lb

46
Q

Stokes litter has __ retaining straps.

A 
5
Gray
Black
Blue
Red
Green
47
Q

Floatation shall consist of a chest pad, floatations tubes, ballast bar, and _______ straps.

A

Restraint

48
Q

Time spent at a sheltered anchorage can reduce the maximum underway hours for crew on watch by __%.

A

50%

49
Q

“Heavy weather” is defined as sea and swell conditions combining to exceed __ feet and/or winds exceeding __ knots.

A

8, 30

50
Q

What does AFFF stand for?

A

Aqueous film forming foam

51
Q

Carbon dioxide is ___ times heavier than air.

A

1.5

52
Q

Maximum speed of HH-60C Dolphin?

A

165 knots

53
Q

Maximum crew endurance of Dolphin?

A

3 hrs

54
Q

Hoist capacity of Dolphin?

A

600 lbs

55
Q

Maximum speed of HH 60J Jayhawk?

A

180 knots

56
Q

Jayhawk max endurance?

A

6 hrs

57
Q

Hoist capacity of Jayhawk?

A

600 lbs

58
Q

The trail line consists of ___ feet of orange polypropylene line.

A

105

59
Q

Weak like is rated not to allow more than ___ pounds of force to be applied to the hoist.

A

300

60
Q

Hoists normally require a wind speed of __-__ knots off the port bow __-__ degrees relative.

A

15-30, 35-45

61
Q

The angle on a two-legged pendant shall never be more than __ degrees.

A

30

62
Q

Mk-127 must be fired at a __ degree angle.

A

90

63
Q

What does VOC stand for?

A

Volatile Organic Compounds

64
Q

In confined spaces, vapors shall be kept below __% the lower explosive limit.

A

10%

65
Q

Paints shall contain no more than __% lead by weight.

A

.06%

66
Q

Paint Storage Life: unopened two part epoxy paint __ years.

A

10

67
Q

Paint Storage Life: opened but mixed two part epoxy paint __ years.

A

3-4 years

68
Q

Paint Storage Life: Water/oil unopened __ years?

A

3-5

69
Q

Paint Storage Life: Water/oil opened __ years?

A

1 year

70
Q

Storage cabinets must be in compliance with National Fire Code # __ ?

A

30

71
Q

Made of at least __ gauge steel?

A

18

72
Q

Storage cabinets are floored with ___ inch air space between inner and outer surface.

A

1.5

73
Q

Maximum amount of flammable product allowed in any one cabinet?

A

60 gallons

74
Q

Maximum amount of combustible products allowed in any one cabinet?

A

120

75
Q

Paints consist of two principals: _______ and _______.

A

Solid pigment and liquid vehicles

76
Q

Best temp to mix paint is __-__ degrees F.

A

65-85

77
Q

______ is the mixing procedure where material is repeatedly poured back and fourth between toe containers.

A

Boxing

78
Q

_______ is the required time after mixing of the components where te critical chemical reaction is allowed to initiate prior to application.

A

Induction time

79
Q

______ paint dries by oxidation.

A

Varnish

80
Q

______ paint dries by evaporation.

A

Lacquer

81
Q

What is safety factor?

A

The ratio between the breaking strength of a rope and the total applied load. Minimum safety factor is 5:1.

82
Q

Shackles shall be constructed of ____________ and should be ____ pin or ____ pin type.

A

Forges alloy steel. Screw pin, bolt pin

83
Q

Rated load test is ___% of the WLL.

A

100%

84
Q

Dynamic load test is ___% of the WLL.

A

125%

85
Q

Static load test is ___% of the WLL.

A

150%

86
Q

Light characteristic, what is Occulting?

A

Light is mostly on, with brief off periods regularly repeated.

87
Q

Light characteristic, what is isophase?

A

Light is on and off for equal periods of time.

88
Q

What does IALA stand for?

A

International Association of Lighthouse Authorities

89
Q

Published by the USCG (7 volumes)

A

Light List

90
Q

Published by National Geospatial Intelligence Agency

A

List of Lights

91
Q

An actual NM is ____ feet or ____ yards.

A

6,076, 2,025

92
Q

______ is the water depth measured at the mean lower low water.

A

Datum

93
Q

How many colors are on a chart?

A

6, buff, green, white, blue, black, magenta

94
Q

What are the 2 types of lettering on a chart?

A

Slanted and vertical

Slanted are those items items affected by tide while vertical is not.

95
Q

Compass rose: ______ direction is the outer ring. ______ direction is the inside.

A

True, magnetic

96
Q

Fathometer: sharp, clear flash

A

Hard bottom

97
Q

Fathometer: broad, fuzzy flash

A

Soft, muddy bottom

98
Q

Fathometer: multiple, fairly sharp flashes

A

Rocky bottom

99
Q

Lead line lead weight of __ to __ lbs.

A

7-14

100
Q

What form is the standard bearing book?

A

OPNAV Form 3530/2

101
Q

In the CG, small arms are defined as all weapons of __ caliber or less and shotguns.

A

.50

102
Q

The interval between monthly inventories shall not be less that __ or more than __ calendar days.

A

23, 35

103
Q

Temp Transfer of ammo/ small arms: “temporary” is defined as a maximum of ___ days.

A

30

104
Q

What does NAR stand for?

A

Notice of Ammunition Reclassification

105
Q

Law enforcement belts, holster, or storage pouches shall be made of either ______, _______, or ________.

A

Black ballistic nylon, polymer, or black leather.

106
Q

What is Standard Ride, in regards to belt mounted holsters?

A

Holds the pistol grip no lower than 4 inches below the belt.

107
Q

The aerosol must contain no greater than __% and no less than __% OC concentration.

A

10, 5

108
Q

The SLTG has a security risk category of __.

A

IV

109
Q

Percent of line BS loss for square knot.

A

46%

110
Q

Percent of line BS loss for Bowline?

A

37%

111
Q

Percent of line BS loss for becket bend?

A

41%

112
Q

Percent of line BS loss for eye splice?

A

5-10%

113
Q

A ____ knot may be used to prevent an un whipped line from un laying.

A

Crown

BM1 SWE (1 decks)

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