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SF PILOT > Ship Handling Facts "ROT" > Flashcards

Ship Handling Facts "ROT" Flashcards

1
Q

SWE STANDS FOR ___________

A

SHALLOW WATER EFFECT

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2
Q

SWE FULL EFFECT AT _____ x draft

1.2
1.5
2
2.5

A

1.2 X DRAFT

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3
Q

SWE FELT AT LESS THAN _____ x draft

1.2
1.5
2
2.5

A

2 X DRAFT

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4
Q

SWE SIGNIFICANT EFFECT AT ____ x draft

1.2
1.5
2
2.5

A

1.5 X DRAFT

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5
Q

SWE TURNING CIRCLE UP TO ____ IN DEEP WATER

A

2 times greater than

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6
Q

SWE - RATE OF TURN IS ____ AS FOR DEEP WATER TURN

A

THE SAME

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7
Q

SWE - PRODUCES ____ STEERING CHARACTERISTICS

A

IMPROVED (PROVIDED NOT TRIMMED BY THE HEAD)

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8
Q

SWE - SHIP TWISTS MORE WHEN ____

Backed or ahead?

A

BACKED (MAY BECOME UNRELIABLE: ROWE pg. 26)

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9
Q

IN SWE SHIP CARRIES HER WAY ____ WITH ENGINE STOPPED

Longer or shorter?

A

LONGER

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10
Q

IN SWE THERE IS _____ WAVE MAKING

Increased or decreased?

A

INCREASED

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11
Q

IN SWE ____ SPEED FOR GIVEN RPM

Reduced or increased?

A

REDUCED

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12
Q

SWE ____ THE TRIM

A

CHANGES (BOW OR STERN DEPENDING ON SHIP AND INITIAL TRIM)

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13
Q

SWE- CHANGE OF OVERALL ____

A

DRAFT (SINKAGE)

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14
Q

SWE- CHANGE OF TRIM AND DRAFT (SINKAGE) = _____

A

SQUAT

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15
Q

SWE- ____ SHIP TO SHIP AND SHIP TO BANK EFFECTS

A

INCREASES

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16
Q

SWE- OPEN WATER SQUAT (FT) = _____

A

Cb X V²/30

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17
Q

SWE- SHALLOW WATER SQUAT (FT) = ____

A

2 X (Cb X V²/30)

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18
Q

SWE- CB 0.75+ TEND TO ____ BY THE HEAD

A

SQUAT

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19
Q

Cb = ____

A

BLOCK COEFFICIENT

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20
Q

V =

A

SPEED

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21
Q

SWE- SQUAT GENERALLY INCREASES ____ AS TWO SHIPS PASS IN A CHANNEL

A

50%

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22
Q

SWE- KEEP SPEEDS TO A MAX OF ____ WITH ____ UKC

A

6 KNOTS, 5 FEET

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23
Q

SWE- LIST CAUSED BY TURN AND SQUAT UNDER HULL AT THE OUTSIDE OF THE TURN IS A ____ FACTOR THAT ____ UKC

A

SIGNIFICANT, REDUCES

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24
Q

SWE-DOES ACCELERATION INCREASE OR DECREASE SQUAT?

A

INCREASES

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25
Q

PP IS LOCATED _______ FOR ACCELERATED TURN AHEAD FROM STOPPED.

A

1/8L FROM BOW

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26
Q

PP =

A

PIVOT POINT

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27
Q

PP IS LOCATED ____ FOR INITIAL STAGE OF TURN WITH HEADWAY

A

1/4L FROM BOW

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28
Q

PP IS LOCATED ____ FOR STEADY TURN

A

1/3L FROM BOW

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29
Q

PP MOVES ____ DURING ACCELERATED TURN

A

FORWARD

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30
Q

PP- MOVES ____ FOR GOING ASTERN

A

FORWARD

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31
Q

PP- MOVES ____ OR ____ FROM THE STERN WHEN STOPPED AND USING BOW THRUSTER

A

1/8L, BEAM WIDTH

32
Q

PP- ____ HAS A VERY STRONG EFFECT ON THE PP LOCATION

A

TRIM (HOOYER pg. 23)

33
Q

PP- TRIMMED BY THE HEAD = ____

A

PIVOT POINT MOVES AFT (HOOYER)

34
Q

PP- TRIMMED BY THE STERN = ____

A

PIVOT POINT MOVES FORWARD (HOOYER)

35
Q

PP = ____ FROM BOW WHEN TURNING HARD FROM DIW

A

1/L-B RATIO

36
Q

PP- TRUE OR FALSE: NEWLY INTRODUCED FORCES DO NOT HAVE IMMEDIATE EFFECT ON PP UNTIL MOMENTUM SUBSIDES

A

TRUE: PP GRADUALLY MOVES (HOOYER pg. 23-24)

37
Q

PP- SHIP WITH HEADWAY-TUG PUSHING AT SHOULDER = ____

A

PIVOT POINT MOVES AFT (HENSON pg..43)

38
Q

PP- SHIP WITH HEADWAY-TUG PUSHING AT QUARTER =____

A

PIVOT POINT MOVES FORWARD (HENSON pg. 43)

39
Q

PP- WHAT EFFECT DOES SHALLOW WATER HAVE ON PIVOT POINT?

A

ROWE SAYS IT MOVES AFT. WE THINK IT STAYS IN POSITION OR MOVES FORWARD A LITTLE

40
Q

CONSTANT RPM TURNING CIRCLES ARE ____ AS AT SLOW AND FULL AHEAD

A

VIRTUALLY IDENTICAL

41
Q

RATE OF TURN ____ AT HIGHER SPEED

A

HIGHER

42
Q

____ TURN CAN REDUCE TURNING CIRCLE DIAMETER BY HALF

A

ACCELERATED

43
Q

VLCC LOSES ____ OF HERE HEADWAY FOR EVERY ____ CHANGE IN HEADING

A

25-30 PERCENT, 90 DEGREES

44
Q

SPEED DECREASES FROM 12 KNOTS TO ____ AFTER COMPLETING A ROUND TURN

A

2-3 KNOTS

45
Q

SHIPS DO RESPOND TO RUDDER AT VERY SLOW SPEED IF ____

A

GIVEN THE CHANCE

46
Q

DIRECTIONALLY UNSTABLE SHIPS NEED ____ RUDDER TO START A TURN AND ____ RUDDER TO STOP A TURN

A

MORE, MORE

47
Q

DIRECTIONALLY UNSTABLE SHIPS HAVE A ____ TURNING CIRCLE

A

SMALLER

48
Q

TURNING MOMENT = ____ MOMENT + MOMENT OF ____ RESISTANCE (FORWARD)

A

STEERING, LATERAL (HOOYER pg. 28)

49
Q

SHIP DOWN BY HEAD = ____ TO STEER, ____ TO START SWING, ____ TO STOP SWING, ____ TURNING CIRCLE

A

DIFFICULT, SLOW, HARD, SMALLER (HOOYER pg. 31)

50
Q

SHIP DOWN BY STERN = LARGER TURNING CIRCLE DUE TO ____ AND ____ WHICH RESTRICTS DRIFT ANGLE

A

WEAK FR AT BOW, STRONG LATERAL RESISTANCE ABAFT PP (HOOYER pg. 31)

51
Q

DRIFT ANGLE ____ UNTIL AR AND TRANSVERSE RUDDER FORCE REACH A BALANCE

A

INCREASES (HOOYER pg. 121)

52
Q

STEERING LEVER = DISTANCE FROM ____ TO ____

A

RUDDER, PP (FIRST CLASS LEVER) (HOOYER pg. 123)

53
Q

LATERAL RESISTANCE LEVER = DISTANCE FROM ____ TO THE ____

A

PP, r’(POINT OF FR) (HOOYER pg. 123)

54
Q

DIAMETER OF TURNING CIRCLE- DIRECTLY PROPORTIONAL TO ____ INVERSELY PROPORTIONAL TO THE ____

A

STERRING LEVER, LATERAL RESISTANCE LEVER (HOOYER pg. 123)

55
Q

DIAMETER OF TURNING CIRCLE- FIRST QUARTER OF TURNING CIRCLE IS ____, AS TURN CONTINUES PP MOVES ____ AS FR INCREASES AND DRIFT ANGLE INCREASES. ALSO AS ____ DECREASES ____ DECREASES

A

LARGER, AFT, SPEED, ADVANCE (MOMENTUM) (HOOYER pg. 123)

56
Q

LOW RATE OF TURN

A

FIRST 10° (HOOYER pg. 122)

57
Q

PEAK RATE OF TURN

A

FROM 10-90° (HOOYER pg. 122)

58
Q

LOWER RATE OF TURN

A

BEYOND 90° (HOOYER pg. 122)

59
Q

WHEN SLOWING DOWN RUDDER CYCLING W/ SMALL COURSE ALTERATIONS - MORE EFFECTIVE IN ______ THAN ______ CONDITION.

A

BALLAST, LOADED

60
Q

WHEN SLOWING DOWN SPEED REDUCTION FROM FULL SPEED - 20 % AHEAD TURNS CREATES ______ RESISTANCE THAN _____ PROPELLER.

A

MORE, STOPPED

HOOYER P.32

61
Q

WHEN SLOWING DOWN SPEED REDUCTION FROM FULL SPEED - 20% AHEAD TURNS CREATES ____ RESISTANCE THAN STOPPED PROPELLER

A

MORE (HOOYER pg. 32)

62
Q

WHEN SLOWING DOWN SPEED REDUCTION FROM FULL SPEED - 20% ASTERN TURNS IS INITIALLY ____ EFFECTIVE THAN WORKING FULL ASTERN DUE TO ____

A

MORE, CAVITATION (HOOYER pg. 33)

63
Q

BT =

A

BOW THRUSTER

64
Q

BT- TURNING EFFECTIVENESS DROPS SIGNIFICANTLY AT SPEEDS OVER ____

A

2 KNOTS

BAUDU- 4 KNOTS (50%)

65
Q

BT - MOST EFFECTIVE WHEN _____, PP A BEAM WIDTH FROM THE ______

A

STOPPED, STERN

ROWE P. 90

66
Q

BT- MORE EFFECTIVE WITH _____ THAN WITH _______

A

STERNWAY, HEADWAY

67
Q

WITH _____ DON’T ALLOW SHIP TO WANDER TO FAR OFF OR DEVELOP ______ ____ __ ______

A

STERNWAY, LARGE RATE OF TURN

68
Q

LATERAL MOTION TO _____ EASIER TO MAINTAIN THAN TO ______

A

PORT, STARBOARD

69
Q

BT- GENERATES SMALL AMOUNT OF ______

A

HEADWAY

70
Q

1KW =

A

1.341 HP (1.351 SHP - ROWE P. 89)

71
Q

2000KW (2702 shp) OVERPOWERED BY _____ KTS OF WIND ON _____ CAR CARRIER

A

18, 200M

72
Q

BANK EFFECT - MORE ______ SUCTION EFFECT THAN _____ CUSHION EFFECT

A

STERN, BANK

73
Q

BANK EFFECT - SHIP _____ BODILY _____ THE BANK

A

SUCKED, TOWARDS

74
Q

BANK EFFECT - SHALLOW WATER _______ EFFECT

A

ACCENTUATES

75
Q

BANK EFFECT - BOW CUSHION & PP - LARGE SHIPS WITH HEIGHTENED BOW WAVE PUSH PP _____ GIVING LEVERAGE TO BOW CUSION WITH DANGER OF _____

A

AFT, SHEER (HOOYER P. 88,89)

76
Q

BANK EFFECT - ANCHOR WARNING - ______ USE ANCHOR TO BREAK SHEER IN _______ CHANNEL WITH _______ UKC.

A

DO NOT, NARROW, SMALL

HOOYER P.91

SF PILOT (5 decks)

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