Maintain watercraft engines or machinery.

Maintain watercraft engines or machinery. is a detailed work activity in O*NET — a concrete unit of work shared across 5 occupations and seen in 12 occupation-specific tasks. It rolls up into the broader work activity Maintain vehicles in working condition. in Repairing and Maintaining Mechanical Equipment .

Detailed work activities are the most granular shared layer in O*NET's work-activity hierarchy (Generalized → Intermediate → Detailed → occupation-specific task). The figures below describe how this activity shows up across the economy and what independent studies measure about AI and this kind of work — not a prediction that the work will be automated.

AI exposure

Of the 12 tasks under this activity that the OpenAI / Eloundou “GPTs are GPTs” study rated, 0 (0%) are flagged as directly exposed to language models (E1) or exposed via model-powered tools (E2).

Exposure estimates overlap with model capabilities — whether a model could speed the task up — not whether the work will be done by software. Observed AI use is augmentation and assistance today, not jobs replaced.

Member tasks

Occupation-specific tasks O*NET maps to this detailed work activity, most important first.

• Perform general marine vessel maintenance or repair work, such as repairing leaks, finishing interiors, refueling, or maintaining decks. · Ship Engineers · importance 4.5 · no direct exposure
• Maintain or repair engines, electric motors, pumps, winches, or other mechanical or electrical equipment, or assist other crew members with maintenance or repair duties. · Ship Engineers · importance 4.5 · no direct exposure
• Maintain equipment such as range markers, fire extinguishers, boat fenders, lines, pumps, and fittings. · Motorboat Operators · importance 4.4 · no direct exposure
• Maintain boats or equipment on board, such as engines, winches, navigational systems, fire extinguishers, or life preservers. · Captains, Mates, and Pilots of Water Vessels · importance 4.3 · no direct exposure
• Service motors by performing tasks such as changing oil and lubricating parts. · Motorboat Operators · importance 4.3 · no direct exposure
• Maintain electrical power, heating, ventilation, refrigeration, water, or sewerage systems. · Ship Engineers · importance 4.2 · no direct exposure
• Maintain a ship's engines under the direction of the ship's engineering officers. · Sailors and Marine Oilers · importance 4.1 · no direct exposure
• Lubricate machinery, equipment, or engine parts, such as gears, shafts, or bearings. · Sailors and Marine Oilers · importance 4.0 · no direct exposure
• Grease and lubricate vehicles or specified units, such as springs, universal joints, or steering knuckles, using grease guns or spray lubricants. · Automotive and Watercraft Service Attendants · importance 3.9 · no direct exposure
• Clean boats and repair hulls and superstructures, using hand tools, paint, and brushes. · Motorboat Operators · importance 3.7 · no direct exposure
• Provide engineers with assistance in repairing or adjusting machinery. · Sailors and Marine Oilers · importance 3.5 · no direct exposure
• Operate, maintain, or repair ship equipment, such as winches, cranes, derricks, or weapons system. · Sailors and Marine Oilers · importance 3.4 · no direct exposure

Occupations that perform this

• Ship Engineers
• Motorboat Operators
• Captains, Mates, and Pilots of Water Vessels
• Sailors and Marine Oilers
• Automotive and Watercraft Service Attendants

Sources for this page

Every figure above traces to a named public dataset and the exact release below — not hand-written opinion. See the full methodology for what each measure does and does not mean.

• O*NET 30.3 U.S. Department of Labor / National Center for O*NET Development
• “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130 OpenAI / academic

Data compiled June 2, 2026. Figures are estimates, not advice.

@misc{singulariki-maintain-watercraft-engines-or-machinery,
  title  = {Maintain watercraft engines or machinery.},
  author = {{Singulariki}},
  year   = {2026},
  note   = {O*NET 30.3; “GPTs are GPTs” (Eloundou et al.) arXiv 2303.10130. Accessed June 7, 2026},
  url    = {https://singulariki.com/detailed-activities/maintain-watercraft-engines-or-machinery}
}