Gravel Extraction Machine Operator (Gravel Extraction Ship)
じゃりさいしゅつきかいうんてんこう
Industry & Occupation
Classification
Summary
This occupation involves operating extraction machines mounted on gravel extraction ships to excavate and recover gravel from the bottoms of rivers and lakes.
Description
Gravel extraction machine operators (gravel extraction ships) are specialists who operate bucket or pump-type extraction devices installed on ships in rivers and lakes to excavate, accumulate, and hoist gravel. They utilize ship maneuvering and machine operation skills to perform extraction work at designated locations, monitor extraction volumes and water depths, and proceed with operations. They also handle daily inspections and simple maintenance of ship machinery, adjustments to work plans in response to weather or water level changes, coordination with crew members, and transportation to shore, among a wide range of duties. They are required to perform work with consideration for safety management and environmental conservation.
Future Outlook
Stable demand is expected due to river and port maintenance and demand for civil engineering materials, but labor shortages due to aging population are a challenge.
Personality Traits
Cautious and responsible / Cooperative / Interested in machinery / Physically fit
Work Style
Long-hour operations / Onboard stay-over duty / Outdoor work / Shift work
Career Path
Helmsman Apprentice → Gravel Extraction Machine Operator → Shift Leader → Port Operations Supervisor → Marine Civil Engineering Construction Manager
Required Skills
Bucket and Pump Extraction Device Operation / GPS and Surveying Equipment Operation / Ship Machinery Inspection and Maintenance / Ship Maneuvering Skills
Recommended Skills
Communication Skills / Hydraulics Basics / Ship Maintenance / Welding Skills
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Adaptability | Need to quickly respond to changes in weather and water levels. |
| Attention to Detail & Accuracy | Accuracy in dredging depth and position directly impacts work efficiency and safety. |
| Physical Stamina & Endurance | Requires long hours of work onboard and operation amidst ship motion. |
| Collaboration & Teamwork | Need to collaborate with onboard crew and onshore staff to advance operations. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | Primarily routine tasks where accurate operation is prioritized over creativity. |
| Numerical & Quantitative Analysis | Minimal detailed mathematical analysis; mainly rough depth assessment. |
Related Qualifications
- Small Vessel Operator License (Grade 2 or higher)
Aliases
- Gravel Extraction Ship Operator
Related Jobs
- Civil Engineering Worker
- Dredger Operator
- Port Cargo Handler
- Ship Engineer