Bow Ramp Hydraulic Piping System

TM 55-1915-200-10

FIGURE 1-35.

The bow thruster engine cooling

system provides the hydraulic fluid to haul in or pay out

water piping system receives potable water from the

the stern anchor chain. System control is maintained

potable water piping system. The cooling system

through a combination of hydraulic valves.

The

pumps the potable water through the engine, aftercooler

hydraulic pump draws hydraulic fluid from the reservoir

and turbocharger to the keel cooler, located outside the

and pumps it through the control valve to drive the

hull of the vessel. From the keel vessel. From the keel

hydraulic motor.

cooler, the coolant goes to an expansion tank then back

to the engine components which completes the cycle.

1-10.23.

Propeller Shaft, Propeller and Shaft

Brake. The propeller shaft transfers power provided by

1-10.22.24. Bow Ramp Hydraulic Piping System. The

the main reduction gear and clutch to the propeller

bow ramp hydraulic piping system provides the

which converts it to thrust required to move the vessel.

hydraulic fuild to operate the bow ramp. System control

The shaft brake stops and holds the propeller shaft

is maintained through a combination of hydraulic valves.

when no torque is applied. The propeller shaft transfers

The hydraulic pump draws hydraulic fluid from the

torque from the main reduction gear and clutch to the

reservoir and pumps it through the control valve to drive

propeller. The propeller converts this torque to the

the hydraulic motor.

thrust needed to move the vessel.

The shaft is

connected to the main reduction gear via the propeller

1-10.22.25. Bow Anchor Windlass Hydraulic Piping

shaft flange. The shaft is lubricated by water from the

stern tube lubrication piping system. The air actuated

System. The bow anchor windlass hydraulic piping

shaft brake provides the means of stopping the propeller

system provides the hydraulic fluid to haul in or pay out

shaft rotation when torque is removed from the shaft.

the bow anchor chain. System control is maintained

The brake is automatically actuated. Shaft locks allow

through a combination of hydraulic valves.

The

manual locking of each shaft.

hydraulic pump draws hydraulic fluid from the reservoir

and pumps it through the control valve to drive the

1-10.24.

Doors, Hatches, and Scuttles Doors,

hydraulic motor.

hatches and scuttles provide access to spaces and

1-10.22.26. Stern Ramp Hydraulic Piping System.

either privacy, security, or watertight/firetight integrity.

Interior doors primarily provide access between above

The stern ramp hydraulic piping system provides the

main deck interior spaces where security or watertight

hydraulic fluid to raise or lower the stern ramp. System

integrity is not a concern. Watertight doors provide

control is maintained through a combination of hydraulic

access to interior spaces from weather spaces and to

valves. The hydraulic pump draws hydraulic fluid from

compartments where watertight integrity is a

the reservoir and pumps it through the control valve to

requirement. Hatches provide access to below main

drive the hydraulic motor. The stern ramp hydraulic

deck areas. Hatches offer watertight integrity when

piping system can be aligned to provide hydraulic fluid

closed and dogged. When open, hatches allow transfer

to the stern anchor winch.

of equipment and personnel between decks. Scuttles

provide emergency or restricted access to below deck

1-10.22.27. Stern Anchor Winch Hydraulic Piping

System. The stern anchor winch hydraulic piping

1-138