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Car carrier 4 (Dis.24186 t) , v09.1

 

Terms used

Wheel over position (W/O)

The point at which the change of course is initiated.

Advance

The distance which the ship has moved in the

 

direction of the initial heading.

Transfer

The distance which the ship has moved perpendicular

 

to the initial heading.

Tactical diameter

Transfer at 180° change of heading.

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

11

Car carrier 4 (Dis.24186 t) , v09.1

2.2.Turning circles in deep water

Engine Order 10

Advance, cbls

 

 

 

 

 

 

4

 

 

 

 

 

 

3.5

 

 

1 min 41 s

 

 

 

 

 

 

 

 

 

 

 

 

11.7 knots

 

 

 

3

 

 

 

 

3 min 11 s

 

 

 

 

 

 

 

2.5

 

 

 

 

9.2 knots

 

 

 

 

 

 

 

2

 

 

 

 

 

 

1.5

 

6 min 13 s

 

 

 

 

8.0 knots

 

4 min 42 s

 

 

 

 

 

 

 

 

 

 

8.3 knots

 

1

 

 

 

 

 

 

0.5

 

 

 

 

 

 

19.6 knots 0

 

 

 

 

 

 

0.5

1

1.5

2

2.5

3

Transfer, cbls

-0.5

 

 

 

 

 

 

Maximum rudder angle used throughout turn

Tactical diameter: 3.7 cbls

Transfer at 90°: 1.6 cbls

Advance at 90°: 3.7 cbls

Environmental conditions during Manoeuvring Trial

Wind direction

Wind speed

Sea state

Depth of water, m

0.0

0.0

0.0

1000

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

12

 

 

 

 

 

Car carrier 4 (Dis.24186 t) , v09.1

 

 

2.3.Accelerating turn

 

 

Advance, cbls

 

 

 

 

 

1

 

 

 

 

 

0.5

1 min 44 s

3 min 17 s

 

 

 

 

 

 

 

4.5 knots

5.5 knots

 

 

 

 

 

 

 

 

 

 

 

 

0

0.0 knots

 

 

 

-0.5

0.5

1

1.5

Transfer, cbls

 

6 min 33 s

 

 

 

 

 

6.6 knots

-0.5

 

4 min 55 s

 

 

 

 

 

 

 

 

 

 

6.3 knots

 

 

 

-1

 

 

 

 

 

-1.5

 

 

 

 

Maximum rudder angle used throughout turn

Engine Order 8 ordered

Tactical diameter: 1.3 cbls

Transfer at 90°: 0.1 cbls

Advance at 90°: 0.8 cbls

Environmental conditions during Manoeuvring Trial

Wind direction

Wind speed

Sea state

Depth of water, m

0.0

0.0

0.0

1000

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

13

Car carrier 4 (Dis.24186 t) , v09.1

2.4.Yaw checking test

Zigzag (or Kempf) manoeuvre

The manoeuvre provides a qualitative measure of the effectiveness of the rudder to initiate and check changes of heading.

The manoeuvre is performed in the following manner. With the ship steaming at a uniform speed and on a constant heading a nominal rudder angle, say 20 degrees, is applied as quickly and as smoothly as possible and held constant until the ships heading has changed by 20 degrees (check angle) from the base course. At this point 20 degrees of opposite rudder is applied and held until the ship’s heading has crossed the base course and is 20 degrees in the opposite direction, the rudder is then reversed as before. This procedure is repeated until the ship’s head has passed through the base course 5 times. During the manoeuvre the ship’s heading and rudder angle are recorded continuously.

Zigzag (or Kempf) Manoeuvre: Ship’s Heading and Rudder Angle against Time

Heading, deg

25

 

 

 

 

 

 

 

 

 

Rudder, deg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

Port

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

Time, s

 

 

 

 

 

 

 

 

 

 

 

50

100

150

200

250

300

350

400

450

500

 

5

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

Stbd

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

25

 

 

 

 

 

 

 

 

 

Rudder angle

20

deg

Initial speed

19.6 kts

Check angle

20

deg

Engine Order 10

 

Swing time

54

s

 

 

Overshoot time

18

s

 

 

Overshoot angle

8

deg

 

 

Period

189

s

 

 

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

14

Car carrier 4 (Dis.24186 t) , v09.1

Terms used

Zigzag (or Kempf) manoeuvre

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

15

Car carrier 4 (Dis.24186 t) , v09.1

Pull out manoeuvre

The pull out manoeuvre was developed as a simple test to give a quick indication of a ship’s course stability. The ship is held on steady course and at a steady speed. A rudder angle of approximately 20 degrees is applied and the ship allowed to achieve a steady rate of turn; at this point the rudder is returned to midships. If the ship is stable the rate of turn will decay to zero for turns to both port and starboard. If the ship has a steering bias, then port and starboard turns will decay to the same small rate of turn on whichever hand the bias exists. If the ship is unstable then the rate of turn will reduce to some residual rate of turn.

Rate of turn

40

 

 

 

 

 

 

 

 

 

 

deg/min

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

Port

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

Time, s

 

 

 

 

 

 

 

 

 

 

 

 

100

200

300

400

500

600

700

800

900

1000

1100

 

10

 

 

 

 

 

 

 

 

 

 

Stbd

20

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

Initial speed 19.6 kts

Stable Ship

Engine Order 10

Rudder at zero time returned to CLP

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

16

Car carrier 4 (Dis.24186 t) , v09.1

2.5.Man-overboard and parallel course manoeuvres

Williamson Turn shown (Engine Order 10)

 

 

 

 

cbls

 

 

4 min 50 s

 

 

AutoPilot turned ON

 

6

 

 

 

 

5

 

 

 

 

4

 

 

 

 

3

 

 

 

1 min 6 s

2

 

 

 

60 deg

 

 

 

 

 

 

 

 

1

cbls

-3

-2

-1

0

 

 

 

 

 

8 min 27 s

7

cbls

 

 

 

 

 

 

5 min 2 s

 

6

 

 

AutoPilot turned ON

5

 

 

 

 

4

 

 

 

 

3

 

 

 

 

2

1 min 8 s

 

 

 

65 deg

 

 

 

 

 

 

 

1

 

 

 

 

0

1

2

3

cbls

 

 

8 min 37 s

 

 

 

Initial Speed 19.6 knots

Forward reach:

6.89 cbls

Forward reach:

6.87 cbls

Lateral transfer:

3.61 cbls

Lateral transfer:

3.89 cbls

Lateral shift:

0.27 cbls

Lateral shift:

0.07 cbls

 

Parallel course manoeuvre (Engine Order 10)

 

 

Advance, cbls

 

 

 

3.5

 

 

 

3

Elapsed time 2 min 50 s

 

 

AutoPilot turned ON

 

 

 

 

 

2.5

 

 

 

2

Elapsed time 3 min 38 s

 

 

 

1.5

 

 

 

1

 

 

 

0.5

 

 

 

0

 

 

Initial Speed 19.6 knots

0.5 1 1.5 2 2.5 Transfer, cbls

 

 

-0.5

 

 

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

17

Car carrier 4 (Dis.24186 t) , v09.1

Terms used

Williamson Turn shown

Parallel course manoeuvre

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

18

Car carrier 4 (Dis.24186 t) , v09.1

2.6.Lateral thruster capabilities

2.6.1.Bow thruster

Zero forward speed

Engine Order 0

Thruster’s power 100%

cbls

0.5

0

-1.5

-1

-0.5

0.5

1

1.5

2 cbls

-0.5

6 min 59 s

-1

-1.5

24 min 40 s

-2

15 min 49 s

-2.5

-3

Effect of forward speed of turning performance (90° turn time)

Speed, knots

 

 

 

 

 

9

 

 

 

 

 

8

 

 

 

 

 

7

 

 

 

 

 

6

 

 

 

 

 

5

 

 

 

 

 

4

 

 

 

 

 

3

 

 

 

 

 

2

 

 

 

 

 

1

 

 

 

 

 

0

 

 

 

 

Time, min

 

 

 

 

 

11

22

33

44

55

66

The information contained herein is proprietary to Transas Marine (UK) Ltd and Navis Co. and shall not be duplicated, used, or disclosed in whole or part for any functional other than to evaluate this quotation.

19

Car carrier 4 (Dis.24186 t) , v09.1

2.6.2. Stern thruster

Zero forward speed Engine Order 0 Thruster’s power 100%

cbls

3

22 min 4 s

2.5

34 min 38 s 2

1.5

1

0.5

9 min 31 s

0

-1.5

-1

-0.5

0.5

1

1.5

2 cbls

-0.5

-1

Effect of forward speed of turning performance (90° turn time)

Speed, knots

 

 

 

 

 

 

 

 

9

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

7

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

Time, min

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

9

The information contained herein is proprietary to Transas Marine (UK) Ltd duplicated, used, or disclosed in whole or part for any functional other

and Navis Co. and shall not be than to evaluate this quotation.

20

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