The document discusses reversing systems for ships, which can use either an indirect or direct shafting arrangement. The indirect system uses a controllable pitch propeller and gearbox to adjust the pitch of the propeller blades for reversing. The direct system directly reverses the rotation of the engine itself, with clockwise rotation for moving ahead and counterclockwise for reversing astern. It also includes a diagram showing the components involved in a direct system, including a selector valve, servo motor, and fuel cams for switching the engine between ahead and astern rotation.

1. REVERSTING SYSTEM
(SISTEM PEMBALIK ARAH PUTARAN)

2. REVERSTING SYSTEM
1. Shafting Arrangement Indirect System
a. CPP (Controllable Pitch Propeller) : mengatur
pitch dari baling-baling
b. Gear box
Memindah roga gigi reduksi

3. REVERSTING SYSTEM
2. Shafting Arrangement Direct System
Mengubah putaran dengan cara membalik arah
putaran mesin,
Misal : clockwise : maju
stop : netral
counterclockwise : mundur

4. REVERSTING SYSTEM
ahead
Hyd. Oil p/p
Selector
valve
Manouvering handle
Ahead astern
Air
reducer
astern
Servo motor
Fuel cam ahead
Fuel cam astern
ahead
astern