The short answer
Drone ROI for fish farms comes mainly from fewer diver entries for visual checks, since a drone flying fixed routes over net pens and feed areas can photograph net tops and surface conditions between dives. The savings range depends on how many routine dives the drone actually replaces, how many hours of watch work it takes off the crew, and the lease cost quoted after a free site assessment. Divers still handle repairs, cleaning and anything below the waterline, so the realistic return is a range, not a fixed number.
Key takeaways
- Most of the return comes from routine visual checks that no longer need a diver in the water.
- The savings range is built from hours of watch work, valued at the local wage for this job from the government wage data on this page.
- Divers still handle repairs, cleaning and netting below the waterline.
- Wind and sea state set flight days, so keep the dive schedule as a fallback.
- Only a site assessment and your own dive logs can turn the range into a precise figure.
Run the numbers for your site
Pick your city or state for a real regional number - we use the real BLS wage there. (On the live site this auto-detects from your location.)
What do you want to automate?
The unit runs the repetitive patrol and watch; guards handle the judgment calls.
What is drone ROI for fish farms?
Drone ROI for fish farms is the return a farm gets when an aerial drone takes over some of the routine checks that now send divers into the water. The drone flies fixed routes over net pens and feed areas and photographs net tops and surface conditions. Each flight that replaces a dive is one less entry into the water, one less diver on the schedule, and one less block of crew hours spent on the visit.
The return is a range, not a fixed figure. It depends on how many routine dives the drone replaces, how many hours of watch work it takes off the crew, and the lease cost quoted to your farm after a site assessment. This page walks through each input so you can test the number against your own dive logs.
Be clear about the limit. A drone sees the top of the nets and the water surface. It does not inspect netting below the surface, and it does not replace divers for repairs or cleaning. The return comes from the checks that do not need a person in the water.
Where does the return come from on a fish farm?
The sector is large enough that these checks happen often. According to the USDA NASS 2023 Census of Aquaculture, the United States had 3,453 aquaculture farms, up 18 percent from 2018, and sales rose 26 percent over the same period. The census has no dedicated finfish total. Its closest category, food fish, had 968 farms, according to a National Aquaculture Association summary of the census.
Net pen finfish operations are a smaller part of that total. According to NOAA's MMPA List of Fisheries, a finfish aquaculture fishery has an estimated 48 participants, targeting Atlantic cod, salmon and red drum. NOAA presents that figure as a participant estimate for marine mammal reporting, not a count of facilities, so it should not be read as the number of farms.
The return also starts with diver exposure. A Canadian Standards Association review from 2024 found that aquaculture divers face higher injury and mortality risk than divers in other industries, and that workers' compensation data likely undercounts aquaculture injuries. Every dive a drone replaces removes that exposure for one visit. For context, a 1999 CDC and NIOSH study of Alaska commercial divers found an average of five deaths a year, which equals 180 deaths per 100,000 employed divers, about 40 times the national average death rate for all workers. That study covers commercial diving, not aquaculture, but it shows why fewer entries matter.
Median hourly wage, Security Guards
$4,317
Monthly cost of one full-time worker, at the median wage plus payroll costs (an estimate, not a quote).
How does the savings math work?
Start with the hours. Take the last twelve months of dive logs and count only the entries made for visual checks of nets and surface conditions. Those are the entries a drone can plausibly replace. Repairs and cleaning stay with divers. Next, estimate the watch work: the periodic looking over of pens, feed areas and surface conditions that a crew member does on foot or from a boat. That is observation and patrol work, the kind of security guard type work that the government wage data on this page covers.
The labor side of the formula is the hours of that watch work taken off the crew, multiplied by the local wage for this job from the government wage data on this page. Diver time is not valued in the calculator, because divers work in another trade and the drone does not replace that trade. Dive entries avoided are shown as a distinct reduction in exposure and scheduling.
Then subtract the lease cost. The lease is a fixed payment set through financing, and the quote comes after a free site assessment. The savings range is the offset hours at the local wage, less the lease and service cost, shown as a low case and a high case. Treat that range as a planning estimate and test each input against your own records before you sign off.
How many hours does a net pen check take?
The research did not find a published hours per pen figure for net pen checks, so the table below is a structure to fill in with your own logs, not a benchmark. What the sources do show is that dive-based inspection has been the default. Divers have traditionally done net pen inspection and maintenance, and underwater remotely operated vehicles are the main alternative in the sources we found.
A dive check carries overhead beyond the time in the water. The crew has to prepare gear, stage a boat, brief the dive and log the result. A drone check replaces the entry itself and most of the surrounding setup for visual work. People still run the flights and review the images, so the crew's time shifts rather than disappearing.
Because the sources do not publish these numbers, the hours in your model should come from your own dive records and shift logs, not from averages across the industry.
| Task | Today | With a robot |
|---|---|---|
| Visual check of net tops from the surface | A diver entry for each pen, with dive prep and logging | A fixed route flight with image review afterward |
| Surface and feed area watch | Crew walks or boats the perimeter on each shift | Scheduled aerial passes flagged for review |
| Dive briefing and gear staging for visual checks | Done before every entry | Needed only for repair and cleaning dives |
| Image review and logging | Written by the diver after the dive | Reviewed from the flight record |
| Repairs and cleaning | Done by divers | Still done by divers |
The research did not publish hour counts for these tasks. Fill the today column from your own dive and shift logs, and the with drone column from the flight plan your site assessment produces.
Which parts of the farm does a drone cover?
A drone works from the air, so its coverage is the surface of the farm: the top of the net pens, the walkways and mooring points visible from above, the feed area, and the water around the pens. It flies fixed routes over these areas and returns photographs for review.
It does not work below the waterline. Netting under the surface, the sides and bottoms of pens, and any task that needs a hand on the net stay with divers or underwater vehicles. Plan the drone for the surface and keep the dive schedule for what sits under it.
Weather limits coverage too. Wind and sea state set the flight days, so a drone program needs a fallback for the days it cannot fly. In most cases that fallback is the existing dive schedule, which is why the savings should be modeled on flyable days.
What can cut the return, and how do you avoid it?
The biggest risk is counting dives that were never really replaced. If the drone supplies images that still need a diver to confirm, the crew keeps the same dive schedule and the savings disappear. Set a rule before the pilot that states which findings are accepted from images alone and which still trigger a dive.
The second risk is weather. Flight days fall, and the fallback dive schedule still runs. Model the return on flyable days and keep a dive reserve in the plan.
The third risk is the regulatory floor. A 2019 to 2020 Washington State Senate bill report describes a requirement that marine finfish net pen operators hire, at their own expense, a marine engineering firm approved by the department to conduct inspections. A drone does not remove that obligation, so do not count the engineering firm's cost as an offset. Check the rules that apply in your state before you finalize the model.
- Visual check of net tops
Drone
Fixed route flight with photographs for review
Staff
Direct view and close range assessment of the net
- Netting below the waterline
Drone
Not covered
Staff
Covered in a dive, with hands on inspection
- Repairs and cleaning
Drone
Not covered
Staff
Done by divers
- Weather tolerance
Drone
Grounded by wind and sea state
Staff
Also stopped by rough water, but judgment on the spot is kept
- Repeat coverage
Drone
Same route each time, logged the same way
Staff
Varies by diver and day, but adapts to what is seen
- Cost basis in the calculator
Drone
Lease cost quoted after site assessment
Staff
Staff time, not valued in this calculator
How long until the drone pays back?
The research does not give a standard timeline, so we do not quote one. The time to payback depends on permits, site mapping, the number of pens on the first route, and how often weather allows flights. The order of work is predictable: site assessment, route design, a pilot on a limited set of pens, then the full route once the crew trusts the images.
Measure payback against your own logs. Compare dive entries and watch hours before the pilot with the same counts after it, ideally across a full season, since surface conditions change with the seasons. A pilot shows whether the offset is real. A full season shows whether it holds.
Plan for the early months to carry the most setup effort. Crews learn to read the images, the dive schedule has to be adjusted, and the route gets refined, so the offset may not be visible until those steps are done.
How do you get an exact figure from a site assessment?
A precise number needs your site. We assess the farm, map the pens and feed areas, and identify the dive entries and watch hours a drone can take over. We then pick the right drone for the site, lease it through financing, deploy and integrate it, train your staff, and service it nationwide, so one partner handles the whole arrangement.
Our ROI calculator is pre-filled for fish farms and shows a savings range built from the inputs described above. The assessment replaces the placeholder inputs with your dive logs, watch schedule, flying days and lease quote. The lease quote comes after the free site assessment, not on this page.
Ask for the quote with the drone route, the service terms, the staff training and the fallback dive schedule written out. That lets you compare the range against the way your farm works today.
Is drone use on fish farms common yet?
Not clearly. The research did not find a 2025 survey of US fish farm drone adoption. A market report appears in search results, but it does not publish its method, so we do not use its share figures. Adoption in other farm settings, such as row crop farming, is its own market and not a proxy for fish farms.
Staffing for net pen work is also poorly documented. A 1994 FAO figure puts a hatchery at about five workers, but that figure is dated and specific to hatcheries. No BLS or national figure for net pen crew size was found, so the typical headcount on this page is an estimate for the crew that does this work at one site.
The sources agree on diver exposure. The Canadian Standards Association review says aquaculture divers face higher injury and mortality risk than divers in other industries. Markel's safety summary of OSHA and BLS data reports 6 to 13 diving fatalities a year and 460 nonfatal injuries and illnesses with days away from work across general commercial diving.
Frequently asked questions
Want a drone at your fish farm?
Tell us about your site. We will recommend the robot, quote the lease, and keep it serviced.
Sources
- US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS May 2024)
- USDA NASS 2023 Census of Aquaculture
- National Aquaculture Association summary of the 2023 Census of Aquaculture
- NOAA MMPA List of Fisheries, finfish aquaculture
- Canadian Standards Association, occupational diving in aquaculture review
- CDC MMWR, NIOSH Alaska commercial diving study
- Markel safety summary of OSHA and BLS diving data
- Washington State Senate bill report, net pen inspections 2019 to 2020
- FAO fisheries document on hatchery staffing