Steering

Question 1

What are the 2 sources of power for E-steering?

Answer 1

L/C 91 alt 4E board

Question 2

What are the 4 locations to steer the ship from?

Answer 2

Sec con in DCC
Bridge
E-Steering
Trick wheels/locally

Question 3

How do you engage the trick wheel?

Answer 3

Pull the pin then pull the trick wheel out and replace the pin

For both local and remote you must engage the switch

Question 4

What are the numerical identifiers for the port and stbd pumps?

Answer 4

Port 2 and 4

Stbd 1 and 3

Question 5

Where are the pumps located?

Answer 5

On top of 2 hydraulic tanks

Question 6

What are the two sources of power and alt power? (Port and stbd)

Answer 6

62 port
63 stbd
Alt 4E board

Question 7

Rams move the ________ which is connected to the ________.

Answer 7

Cross head

Rudder

Question 8

What is the steering angle of the cross head?

Answer 8

35 degrees

Question 9

What happens at 36 and 37 degrees?

Answer 9

36 - the copper crush ring will be crushed

37 - it will engage the steel stop ring

Question 10

What are the wrenches used for?

Answer 10

Used to 0 out steering and locking the cross head

Question 11

If all else fails what can be used to steer the ship?

Answer 11

The screws (propellers)

Question 12

How far are the rudders able to be off at any time? What is the risk of them being farther apart?

Answer 12

3 degrees

Pressure being created and forcing the rudders apart

Question 13

What does the servo box do?

Answer 13

Turns mechanical signal into electrical signal

Question 14

What is the purpose of the servo box? (Helm)

Answer 14

Tells the helm the position of the rudder through the differential box

Question 15

What are the purpose of the 3 servos?

Answer 15

2 receive signal from rudders

1 send signal to bridge

Question 16

What does the steering control disconnect box do?

Answer 16

Controls the available power from the ABT /breaker/motor controller

Question 17

When switched into emergency run what happens?

Answer 17

By passes all electrical safeties and supplies power to the HPU (Hydraulic power unit)

Question 18

What are the tanks and their capacities in the Hydraulic Power Unit? (HPU)

Answer 18

Static tank head - 25 gal (maintains constant pressure to the system

Emergency steering tank - 25 gal

Sump tank - 240-280 gal

Storage/Cooling tank - 280 gal

Question 19

An electric motor with 2 __________ that feed 2 _________

Answer 19

Drive shafts

Pumps

Question 20

How many HPU run on each side normally? What can happen in an emergency?

Answer 20

1 HPU on normal

All 4 can be ran if needed

Question 21

2 pumps are connected by what? And what does it feed?

Answer 21

The hydraulic transfer assembly

It feeds the manifold that creates pressure in rams (2 rams per side)

Question 22

What is lead and lag?

Answer 22

Pushing and or pulling of hydraulic fluid

Question 23

When are rudder swing checks done during a restricted maneuvering doctrine?

Answer 23

24 hrs before RMD

Question 24

When do we go into RMD?

Answer 24

Pulling in, along side, and forming up

Question 25

What are the hazards of working in aft steering?

Answer 25

Slipping, hearing, sight, hydraulic fluid