Detailed Answer
Shipyard precision lifting (block alignment): 1. Dual speed + inching (fine adjustment on low gear); 2. Proportional joystick (stepless speed); 3. Anti-sway interlock (VFD); 4. Positioning observation (operator position); 5. Multi-person coordination (signal commands). LDER LD series dual speed + proportional option; XINGJIA high-end models.
| Dual speed | Low-speed inching |
| Proportional | Stepless speed |
| Anti-sway | VFD interlock |
Note:If block alignment precision is insufficient, first adjust the low-speed gear.